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The small mammal assemblage from the Late Miocene of Dolhești-1 (Moldavian Platform - Romania)

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.11.001

Dumitru-Daniel Badea , Bogdan-Gabriel Răţoi , Vicente D. Crespo , Mihai Brânzilă

Dolhești-1 is located 50 km south of Iași town (Iași County), in the northeast part of Romania. The sedimentary deposits exposed at Dolhești-1 belong to the last megacycle of the Moldavian Platform. Approximately one ton of sediment was screen-washed to collect the fossils using stable sieves. The most essential fossil elements identified in the locality were teeth of small mammals. More than 30 teeth were identified belonging to nine taxa: Hansdebruijnia erksinae, Neocricetodon progressus, Vasseuromys pannonicus, Myomimus dehmi, Hylopetes aff. hoeckarum, Sciuridae indet., Ochotona eximia, Schizogalerix cf. sarmaticum, and Crusafontina cf. kormosi, the rodents being the most diverse group. Based on the presence of Vasseuromys pannonicus, the age of the small mammal assemblage is interpreted as early Turolian (MN 11, Late Miocene). The genera Vasseuromys, Hylopetes, and Hansdebruijnia are reported for the first time in the Late Miocene of eastern Romania. This small mammal assemblage identified from Dolhești-1 represents the first early Turolian microvertebrate findings from the Late Miocene of Romania. The diversity of this faunal association represents an advantage for the interpretation of the paleoenvironment. Furthermore, the discovery of these taxa constitutes an important contribution to the study of small mammals from the Late Miocene of the Eastern Carpathians Foreland, adding new data about Turolian localities in Eastern Europe.

{"title":"The small mammal assemblage from the Late Miocene of Dolhești-1 (Moldavian Platform - Romania)","authors":"Dumitru-Daniel Badea , Bogdan-Gabriel Răţoi , Vicente D. Crespo , Mihai Brânzilă","doi":"10.1016/j.geobios.2024.11.001","DOIUrl":"10.1016/j.geobios.2024.11.001","url":null,"abstract":"<div><div>Dolhești-1 is located 50 km south of Iași town (Iași County), in the northeast part of Romania. The sedimentary deposits exposed at Dolhești-1 belong to the last megacycle of the Moldavian Platform. Approximately one ton of sediment was screen-washed to collect the fossils using stable sieves. The most essential fossil elements identified in the locality were teeth of small mammals. More than 30 teeth were identified belonging to nine taxa: <em>Hansdebruijnia erksinae</em>, <em>Neocricetodon progressus</em>, <em>Vasseuromys pannonicus</em>, <em>Myomimus dehmi</em>, <em>Hylopetes</em> aff. <em>hoeckarum</em>, Sciuridae indet., <em>Ochotona eximia</em>, <em>Schizogalerix</em> cf. <em>sarmaticum</em>, and <em>Crusafontina</em> cf. <em>kormosi</em>, the rodents being the most diverse group. Based on the presence of <em>Vasseuromys pannonicus</em>, the age of the small mammal assemblage is interpreted as early Turolian (MN 11, Late Miocene). The genera <em>Vasseuromys</em>, <em>Hylopetes</em>, and <em>Hansdebruijnia</em> are reported for the first time in the Late Miocene of eastern Romania. This small mammal assemblage identified from Dolhești-1 represents the first early Turolian microvertebrate findings from the Late Miocene of Romania. The diversity of this faunal association represents an advantage for the interpretation of the paleoenvironment. Furthermore, the discovery of these taxa constitutes an important contribution to the study of small mammals from the Late Miocene of the Eastern Carpathians Foreland, adding new data about Turolian localities in Eastern Europe.</div></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"88 ","pages":"Pages 5-14"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unraveling the interplay between humans and carnivores in El Olivo Cave during the Middle and Upper Paleolithic period (Llanera, Asturias, Spain) 揭示旧石器时代中、上古时期埃尔奥利沃洞穴中人类与食肉动物之间的相互作用（西班牙，阿斯图里亚斯，拉内拉）

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.02.008

Clara Mielgo , José Yravedra Sainz de los Terreros , David Álvarez-Alonso , María de Andrés-Herrero , Aitor Hevia-Carrillo

El Olivo Cave (Llanera, Asturias, Spain) is a small karst cave within the Aboño River watershed. It holds a significant archaeological and paleontological record dating from the Middle and late Upper Paleolithic, featuring several lithic artifacts and faunal remains in each archaeological level. The study of the faunal remains reveals a high representation of ungulates, with Cervus elaphus and Equus ferus being the main ones. Carnivores are also represented by diverse species such as Vulpes vulpes and Canis lupus, among others. The taphonomic analysis evidenced the presence of human activity, accompanied by a significant incidence of tooth marks across all stratigraphic units and water-related processes in the lower part of the sequence. During this temporal range, there were faunal accumulations of anthropogenic origin altered by the action of other agents, especially carnivores. A diverse array of carnivore used the same space and taking advanced of the anthropogenic residues as scavengers. Moreover, we suggest a commensal synanthropic behavior exhibited by foxes. Consequently, El Olivo Cave is an illustrative case to explore the carnivore action in levels with human presence, something unusual at the late Upper Paleolithic sites in Northern Iberia.

{"title":"Unraveling the interplay between humans and carnivores in El Olivo Cave during the Middle and Upper Paleolithic period (Llanera, Asturias, Spain)","authors":"Clara Mielgo , José Yravedra Sainz de los Terreros , David Álvarez-Alonso , María de Andrés-Herrero , Aitor Hevia-Carrillo","doi":"10.1016/j.geobios.2024.02.008","DOIUrl":"10.1016/j.geobios.2024.02.008","url":null,"abstract":"<div><div>El Olivo Cave (Llanera, Asturias, Spain) is a small karst cave within the Aboño River watershed. It holds a significant archaeological and paleontological record dating from the Middle and late Upper Paleolithic, featuring several lithic artifacts and faunal remains in each archaeological level. The study of the faunal remains reveals a high representation of ungulates, with <em>Cervus elaphus</em> and <em>Equus ferus</em> being the main ones. Carnivores are also represented by diverse species such as <em>Vulpes vulpes</em> and <em>Canis lupus</em>, among others. The taphonomic analysis evidenced the presence of human activity, accompanied by a significant incidence of tooth marks across all stratigraphic units and water-related processes in the lower part of the sequence. During this temporal range, there were faunal accumulations of anthropogenic origin altered by the action of other agents, especially carnivores. A diverse array of carnivore used the same space and taking advanced of the anthropogenic residues as scavengers. Moreover, we suggest a commensal synanthropic behavior exhibited by foxes. Consequently, El Olivo Cave is an illustrative case to explore the carnivore action in levels with human presence, something unusual at the late Upper Paleolithic sites in Northern Iberia.</div></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"88 ","pages":"Pages 175-185"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141842003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Who is who and why. Implications of tooth-marks identification at two sites in the Orce Basin Archaeological Zone (OBAZ; southern Spain)

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.05.003

José Yravedra , Darío Herranz-Rodrigo , Verónica Estaca-Gómez , Idoia Claver , Gonzalo Linares-Matás , Alexia Serrano-Ramos , Carmen Luzón , Juan José Rodríguez-Alba , José A. Solano , Juan Manuel Jiménez-Arenas

The Orce Basin Archaeological Zone (OBAZ; Granada, Spain) is well known because it contains some of the most important Early Pleistocene archaeo-palaeontological sites for understanding the earliest human settlement in the westernmost part of Eurasia and its ecological context. Among those are Venta Micena (VM), Barranco León (BL) and Fuente Nueva 3 (FN3). The role played by the extinct Pachycrocuta brevirostris present at the OBAZ sites has long been recognised in the literature. However, little or nothing is known about the agency of the other documented carnivore species. Nevertheless, the development of technologies such as 3D modelling, geometric morphometrics, robust data modelling and artificial intelligence algorithms makes it possible to characterise a type of tooth mark (pits) and its assignment to a taxon. Moreover, such a combination of methodologies allows us to infer novel aspects related to the behaviour of carnivores, to establish interpretative differentiation between the carnivore agents at VM3 and BL, to point to the interactions among them and with Homo, and to review some proposals on the first human dispersal outside Africa.

{"title":"Who is who and why. Implications of tooth-marks identification at two sites in the Orce Basin Archaeological Zone (OBAZ; southern Spain)","authors":"José Yravedra , Darío Herranz-Rodrigo , Verónica Estaca-Gómez , Idoia Claver , Gonzalo Linares-Matás , Alexia Serrano-Ramos , Carmen Luzón , Juan José Rodríguez-Alba , José A. Solano , Juan Manuel Jiménez-Arenas","doi":"10.1016/j.geobios.2024.05.003","DOIUrl":"10.1016/j.geobios.2024.05.003","url":null,"abstract":"<div><div>The Orce Basin Archaeological Zone (OBAZ; Granada, Spain) is well known because it contains some of the most important Early Pleistocene archaeo-palaeontological sites for understanding the earliest human settlement in the westernmost part of Eurasia and its ecological context. Among those are Venta Micena (VM), Barranco León (BL) and Fuente Nueva 3 (FN3). The role played by the extinct <em>Pachycrocuta brevirostris</em> present at the OBAZ sites has long been recognised in the literature. However, little or nothing is known about the agency of the other documented carnivore species. Nevertheless, the development of technologies such as 3D modelling, geometric morphometrics, robust data modelling and artificial intelligence algorithms makes it possible to characterise a type of tooth mark (pits) and its assignment to a taxon. Moreover, such a combination of methodologies allows us to infer novel aspects related to the behaviour of carnivores, to establish interpretative differentiation between the carnivore agents at VM3 and BL, to point to the interactions among them and with <em>H</em>omo, and to review some proposals on the first human dispersal outside Africa.</div></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"88 ","pages":"Pages 289-298"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Carboniferous Gondwanan lycophyte Bumbudendron, revisited

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.08.010

Eliana P. Coturel

The type material of Bumbudendron is reviewed in the light of current knowledge about fossil lycophytes. The bark is characterized having cushions with an infrafoliar bladder and a ligule. The variation in leaf bases and leaf scars and their presence may not only depend on the plant’s age or position on the stem, but also the plant’s preservation. The diagnosis of the genus is emended to include the presence of a ligule and a ligule pit in sterile and fertile leaves, the presence or absence of a preserved leaf scar, and variations in size and shape of the cushions resulting from preservation. Bumbudendron nitidum is here regarded as a synonym of B. millanii, the latter name having priority. In this concept, genus Bumbudendron comprises five species: B. paganzianum and B. millanii (Carboniferous of Argentina and Brazil), B. versiforme (Carboniferous and Lower Permian of Argentina and Uruguay), B. patagonicum (Permian of Argentina), and B. peruvianum (Lower Carboniferous of Peru). A review of the species of lycophytes from India, Niger, Ghana, and Egypt is suggested to determine whether they are assignable to Bumbudendron, and thus to define the geographic range of this genus.

{"title":"The Carboniferous Gondwanan lycophyte Bumbudendron, revisited","authors":"Eliana P. Coturel","doi":"10.1016/j.geobios.2024.08.010","DOIUrl":"10.1016/j.geobios.2024.08.010","url":null,"abstract":"<div><div>The type material of <em>Bumbudendron</em> is reviewed in the light of current knowledge about fossil lycophytes. The bark is characterized having cushions with an infrafoliar bladder and a ligule. The variation in leaf bases and leaf scars and their presence may not only depend on the plant’s age or position on the stem, but also the plant’s preservation. The diagnosis of the genus is emended to include the presence of a ligule and a ligule pit in sterile and fertile leaves, the presence or absence of a preserved leaf scar, and variations in size and shape of the cushions resulting from preservation. <em>Bumbudendron nitidum</em> is here regarded as a synonym of <em>B</em>. <em>millanii</em>, the latter name having priority. In this concept, genus <em>Bumbudendron</em> comprises five species: <em>B. paganzianum</em> and <em>B</em>. <em>millanii</em> (Carboniferous of Argentina and Brazil), <em>B. versiforme</em> (Carboniferous and Lower Permian of Argentina and Uruguay), <em>B. patagonicum</em> (Permian of Argentina), and <em>B. peruvianum</em> (Lower Carboniferous of Peru). A review of the species of lycophytes from India, Niger, Ghana, and Egypt is suggested to determine whether they are assignable to <em>Bumbudendron</em>, and thus to define the geographic range of this genus.</div></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"88 ","pages":"Pages 61-69"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Early Pleistocene (Epivillafranchian) vertebrates from Portugal: An updated review

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.08.013

Darío Estraviz-López , Aurora Grandal-d’Anglade , María Ríos

The Epivillafranchian (1.2 to 0.8 Ma) fossil vertebrate assemblages of Portugal are extremely poorly known compared with to those from the eastern half of Iberia. We review material from one of the two localities of this age previously known in Portugal, Algoz, and present a new microvertebrate locality, Santa Margarida. Both localities are situated in Algarve (South Portugal). The fauna of Algoz includes Hippopotamus antiquus, Eucladoceros sp., Metacervocerus rhenanus and an indeterminate leporid. There are remains of at least two individuals of each deer species from Algoz, although most of the remains are from the same juvenile individual of Eucladoceros sp., about 6 months old. The age of Algoz is determined to be ∼1.2 Ma given the combination of species and their biometrical and morphological characters. Santa Margarida has at least ten species of microvertebrates: Lacertidae indet., Crocidura sp., Sorex sp., Oryctolagus cf. cuniculus, Eliomys cf. quercinus, Apodemus cf. sylvaticus, Allocricetus bursae, Victoriamys chalinei, Iberomys huescarensis, and Iberomys brecciensis. This is the first occurrence of Victoriamys chalinei and Iberomys huescarensis –two vole species typical from the Early Pleistocene – in Portugal. Santa Margarida is younger than Algoz, ranging between ∼0.9 and ∼0.6 Ma, which means that the Early-Middle Pleistocene transition could be represented by this locality.

{"title":"Early Pleistocene (Epivillafranchian) vertebrates from Portugal: An updated review","authors":"Darío Estraviz-López , Aurora Grandal-d’Anglade , María Ríos","doi":"10.1016/j.geobios.2024.08.013","DOIUrl":"10.1016/j.geobios.2024.08.013","url":null,"abstract":"<div><div>The Epivillafranchian (1.2 to 0.8 Ma) fossil vertebrate assemblages of Portugal are extremely poorly known compared with to those from the eastern half of Iberia. We review material from one of the two localities of this age previously known in Portugal, Algoz, and present a new microvertebrate locality, Santa Margarida. Both localities are situated in Algarve (South Portugal). The fauna of Algoz includes <em>Hippopotamus antiquus</em>, <em>Eucladoceros</em> sp., <em>Metacervocerus rhenanus</em> and an indeterminate leporid. There are remains of at least two individuals of each deer species from Algoz, although most of the remains are from the same juvenile individual of <em>Eucladoceros</em> sp., about 6 months old. The age of Algoz is determined to be ∼1.2 Ma given the combination of species and their biometrical and morphological characters. Santa Margarida has at least ten species of microvertebrates: Lacertidae indet., <em>Crocidura</em> sp., <em>Sorex</em> sp., <em>Oryctolagus</em> cf<em>. cuniculus</em>, <em>Eliomys</em> cf. <em>quercinus</em>, <em>Apodemus</em> cf. <em>sylvaticus</em>, <em>Allocricetus bursae</em>, <em>Victoriamys chalinei</em>, <em>Iberomys huescarensis</em>, and <em>Iberomys brecciensis</em>. This is the first occurrence of <em>Victoriamys chalinei</em> and <em>Iberomys huescarensis</em> –two vole species typical from the Early Pleistocene – in Portugal. Santa Margarida is younger than Algoz, ranging between ∼0.9 and ∼0.6 Ma, which means that the Early-Middle Pleistocene transition could be represented by this locality.</div></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"88 ","pages":"Pages 77-89"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A new approach to the fossil flamingo from Pie de Vaca locality (Puebla, central México) and some taxonomic and biogeographic implications

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.05.007

Obed Galicia-Coleote , Jose Alberto Cruz , Eduardo Corona-M.

Pie de Vaca is a late Cenozoic site located in the municipality of Tepexi de Rodríguez, Puebla, Mexico. It is known for its ichnofossil record including footprints of camelids, carnivores, and peccaries, as well as the taphoglyph of an almost complete flamingo skeleton. This fossil specimen was previously identified as Phoenicopterus stocki, a small extinct species, through linear osteometric comparisons of the tibiotarsus. This study presents new data on the morphological features of the taphoglyph skull impression. The extant genera Phoenicopterus, Phoenicoparrus, and Phoeniconaias differ in the morphology and size of the skulls. The fossil specimen analyzed exhibits a small head and a distinct cranial shape when compared to those genera. The results confirm that the taphoglyph belongs to an adult of a small phenicopterid. The two-dimensional morphometric comparisons of the tibiotarsus based on the ratio of distal depth to distal width shows that the taphoglyph is larger than Phoeniconaias minor and Phoenicopterus minutus, and more similar to Phoenicopterus ruber. The analysis revealed previously unknown characteristics of the taphoglyph and refutes its previous identification as the extinct species Phoenicopterus stocki. The specimen appears to be a small adult flamingo, but it differs from known extant genera. These findings confirm the presence of a group of small flamingos in the late Cenozoic of North America and Mexico, with the most complete specimen being the taphoglyph of Pie de Vaca. However, further research remains necessary to establish its connections with extinct and extant phenonicopterids.

{"title":"A new approach to the fossil flamingo from Pie de Vaca locality (Puebla, central México) and some taxonomic and biogeographic implications","authors":"Obed Galicia-Coleote , Jose Alberto Cruz , Eduardo Corona-M.","doi":"10.1016/j.geobios.2024.05.007","DOIUrl":"10.1016/j.geobios.2024.05.007","url":null,"abstract":"<div><div>Pie de Vaca is a late Cenozoic site located in the municipality of Tepexi de Rodríguez, Puebla, Mexico. It is known for its ichnofossil record including footprints of camelids, carnivores, and peccaries, as well as the taphoglyph of an almost complete flamingo skeleton. This fossil specimen was previously identified as <em>Phoenicopterus stocki,</em> a small extinct species, through linear osteometric comparisons of the tibiotarsus. This study presents new data on the morphological features of the taphoglyph skull impression. The extant genera <em>Phoenicopterus</em>, <em>Phoenicoparrus</em>, and <em>Phoeniconaias</em> differ in the morphology and size of the skulls. The fossil specimen analyzed exhibits a small head and a distinct cranial shape when compared to those genera. The results confirm that the taphoglyph belongs to an adult of a small phenicopterid. The two-dimensional morphometric comparisons of the tibiotarsus based on the ratio of distal depth to distal width shows that the taphoglyph is larger than <em>Phoeniconaias minor</em> and <em>Phoenicopterus minutus</em>, and more similar to <em>Phoenicopterus ruber</em>. The analysis revealed previously unknown characteristics of the taphoglyph and refutes its previous identification as the extinct species <em>Phoenicopterus stocki.</em> The specimen appears to be a small adult flamingo, but it differs from known extant genera. These findings confirm the presence of a group of small flamingos in the late Cenozoic of North America and Mexico, with the most complete specimen being the taphoglyph of Pie de Vaca. However, further research remains necessary to establish its connections with extinct and extant phenonicopterids.</div></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"88 ","pages":"Pages 103-111"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the main drivers of environmental and climatic changes of the sea-surface across the Cretaceous-Paleogene transition: A global perspective

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.08.011

Vicente Gilabert , Sietske J. Batenburg , José A. Arz , Nils B. Baumann , Marcel Regelous , Ignacio Arenillas

The Chicxulub impact and Deccan volcanism have long been considered opposing factors to explain the changes observed across the Cretaceous/Paleogene boundary (KPB). Although the geologically instantaneous effects of the Chicxulub impact better explain the KPB catastrophic mass extinction, refinement of geochemical and micropaleontological proxies contributes to assessing the actual role of the Deccan volcanism in environmental changes across the KPB. Furthermore, cyclostratigraphy is being used to evaluate the role of orbital forcing on climate, and to refine age models. In this paper, we evaluate the climate and environmental changes across the KPB (66.100–65.350 Ma) from a global perspective, exploring several proxies from the Pacific, Atlantic and Tethyan realms: bulk δ¹⁸O and δ¹³C disturbances, mercury enrichments, and blooms of triserial guembelitriids and aberrant planktic foraminifera. The KPB, Dan-C2 and LC29n events, dated at 66.0, 65.8–65.7 and 65.47–65.41 Ma, respectively, have been recognized in all Tethyan and Atlantic localities, but only the KPB in the Pacific. Multiproxy analysis suggests that volcanic activity of the Deccan Traps did not have a relevant role in the aforementioned events, but contributed to environmental stress in the first 10 kyr of the Danian, and between ∼70 and 200 kyr after the KPB.

{"title":"Evaluation of the main drivers of environmental and climatic changes of the sea-surface across the Cretaceous-Paleogene transition: A global perspective","authors":"Vicente Gilabert , Sietske J. Batenburg , José A. Arz , Nils B. Baumann , Marcel Regelous , Ignacio Arenillas","doi":"10.1016/j.geobios.2024.08.011","DOIUrl":"10.1016/j.geobios.2024.08.011","url":null,"abstract":"<div><div>The Chicxulub impact and Deccan volcanism have long been considered opposing factors to explain the changes observed across the Cretaceous/Paleogene boundary (KPB). Although the geologically instantaneous effects of the Chicxulub impact better explain the KPB catastrophic mass extinction, refinement of geochemical and micropaleontological proxies contributes to assessing the actual role of the Deccan volcanism in environmental changes across the KPB. Furthermore, cyclostratigraphy is being used to evaluate the role of orbital forcing on climate, and to refine age models. In this paper, we evaluate the climate and environmental changes across the KPB (66.100–65.350 Ma) from a global perspective, exploring several proxies from the Pacific, Atlantic and Tethyan realms: bulk δ<sup>18</sup>O and δ<sup>13</sup>C disturbances, mercury enrichments, and blooms of triserial guembelitriids and aberrant planktic foraminifera. The KPB, Dan-C2 and LC29n events, dated at 66.0, 65.8–65.7 and 65.47–65.41 Ma, respectively, have been recognized in all Tethyan and Atlantic localities, but only the KPB in the Pacific. Multiproxy analysis suggests that volcanic activity of the Deccan Traps did not have a relevant role in the aforementioned events, but contributed to environmental stress in the first 10 kyr of the Danian, and between ∼70 and 200 kyr after the KPB.</div></div>","PeriodicalId":55116,"journal":{"name":"Geobios","volume":"88 ","pages":"Pages 125-137"},"PeriodicalIF":1.6,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143387029","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morphometry of a partial Late Pleistocene dhole (Cuon alpinus europaeus (Bourguignat, 1868); Carnivora, Canidae) skeleton from Llonin Cave (Asturias, Spain) and its taphonomic origin

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.03.001

Alfred Sanchis , Elsa Duarte , Leopoldo Pérez , Cristina Real , Asier Gómez-Olivencia , Francisco Pastor , Marco de la Rasilla

In this paper, we present the remains of a single dhole discovered in three Late Pleistocene levels (Cono Posterior sector) of Llonin Cave, in Asturias (Spain). Said remains consist of the partial skeleton of an adult individual, showing small-sized dentition with a high degree of hypercarnivorism, typical of populations with derived traits from the Late Pleistocene in Europe. Morphometric analysis of the bone assemblage reveals that it belongs to the subspecies Cuon alpinus europaeus (Bourguignat, 1868). A direct dating on a dhole bone has provided a date of 29,231 ± 387 BP and confirms its archaeological stratigraphic position associated with the Gravettian phase of the site. The taphonomic history of the dhole assemblage and their spatial distribution provides information about the interaction processes and cave occupation dynamics by these canids and by prehistoric human groups.

引用次数: 0

Palaeobiological and taphonomic analysis of a site hosting a cold-adapted fauna in Iberia: The Baio cave (Zestoa, Gipuzkoa, northern Iberian Peninsula)

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.05.008

Manuel Rodríguez-Almagro , Martin Arriolabengoa , Mónica Villalba de Alvarado , Diego Arceredillo , Julia Galán , Mónica Fernández-García , Jan van der Made , José Julián Esteban , Juan Luis Arsuaga , Joseba Rios-Garaizar , Nohemi Sala , Asier Gómez-Olivencia

The study of cold-adapted faunas in Iberia is of great interest to palaeontologists because this peninsula represents the southernmost limit of the distribution in Western Europe of species such as mammoth, reindeer and woolly rhinoceros. Additionally, the direct dating of these palaeontological assemblages can provide important information regarding the palaeoecology of Palaeolithic humans. In this study, we examine the fossil assemblage recovered from the floor of the Baio cave (Zestoa, northern Iberia), which includes the remains of cold-adapted species. This site has yielded an assemblage that includes herbivores, carnivores and a small number of rodents. Our radiocarbon dating of the remains of a reindeer and a red deer yielded chronologies consistent with the Châtelperronian and Late Aurignacian occupations in the area, indicating a diachronic accumulation. Taphonomic observations suggest carnivores as being the main accumulation agents, with a minimal human contribution, along with the probable accumulation of some remains due to natural causes and/or the cave acting as a natural trap. This new evidence contributes to the existing records from other sites, such as Ekain and Mainea, suggesting severe climatic pulses during the transition from the Middle to the Upper Palaeolithic, which coincides with a complex pattern of Neandertal extinction and their replacement by modern humans.

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引用次数: 0

4th Palaeontological Virtual Congress. How palaeontology advances in the XXI century

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.12.001

Rosalía Guerrero-Arenas , Alba Sánchez-García , Evangelos Vlachos, Arturo Gamonal, Fernando Antonio Martín Arnal, Penélope Cruzado-Caballero, Javier González-Dionis, María Ríos Ibáñez, Vicente D. Crespo

引用次数: 0

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