IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.02.003

Nikolaos Kargopoulos , Alberto Valenciano , Juan Abella , Michael Morlo , George E. Konidaris , Panagiotis Kampouridis , Thomas Lechner , Madelaine Böhme

The Late Miocene locality of Hammerschmiede has yielded an astonishing diversity of vertebrates, including 28 different carnivoran species. The main layers HAM 5 (11.62 Ma) and HAM 4 (11.44 Ma) have been found to host 21 and 17 carnivoran species, respectively. Herein we perform a guild structure analysis aiming to unravel their ecomorphological role. A rarefaction analysis showed that such a high representation of carnivorans is comparable only to the fissure fillings of La-Grive-Saint-Alban. The First and Last Occurrence Dates of several genera and species are reported in the locality. The profile of the locality concerning the Numbers of Species and Individuals per family is unique among the Miocene localities of Europe. The discovered carnivorans were attributed to palaeoecological categories based on their body mass, locomotor pattern, and diet preferences. Ecomorphological comparison revealed that most species were able to reduce competition by occupying different ecological niches, but some cases of ecological overlap were found. This shows that the ecosystem of Hammerschmiede offered diverse resources that allowed the subsistence of a plethora of carnivorans. Finally, the two main layers exhibit some differences in their carnivoran components, with HAM 4 dominated by small-/medium-sized piscivores/generalist carnivores, whereas HAM 5 also includes large-sized durophagous/hypercarnivorous forms.

在中新世晚期的Hammerschmiede发现了种类繁多的脊椎动物，其中包括28种不同的食肉动物。主要层ham5 （11.62 Ma）和ham4 （11.44 Ma）分别寄生21种和17种食肉动物。本文通过行会结构分析，揭示其生态形态学作用。一项稀疏分析表明，如此高的食肉动物比例只能与La-Grive-Saint-Alban的裂隙填充物相媲美。报道了该地区若干属、种的最早和最后发生日期。关于每个科的物种数量和个体数量的地区概况在欧洲中新世地区中是独一无二的。根据它们的体重、运动模式和饮食偏好，这些发现的食肉动物被归为古生态类别。生态形态比较表明，大多数物种通过占据不同的生态位来减少竞争，但也存在生态重叠的情况。这表明哈默施米德的生态系统提供了多种多样的资源，使大量食肉动物得以生存。最后，两个主要层在食肉成分上表现出一定的差异，其中ham4以中小型鱼食性/多面性食肉动物为主，而ham5也包括大型硬食性/超食肉动物。

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引用次数: 0

The mandible of Salbatore II: A new Ursus deningeri site in the northern Iberian Peninsula Salbatore II的下颌骨：伊比利亚半岛北部一个新的Ursus deningeri遗址

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.08.019

Mónica Villalba de Alvarado , María Prat-Vericat , Martin Arriolabengoa , Joan Madurell- Malapeira , Asier Gómez-Olivencia

Ursus deningeri, together with Ursus spelaeus sensu lato, are chronospecies that belong to the Quaternary iconic cave bear lineage. They inhabited Iberia from the late Early to the late Middle Pleistocene. Here we describe a complete bear mandible recovered from Salbatore II cave (Basque Country). To assess its taxonomy, we compared it with other European Pleistocene cave and brown bears. Comparisons were made concerning its morphology and using both traditional and 3D geometric morphometrics analyses. The mandible has several morphological similarities with the cave bears such as a high corpus and deep masseter fossa. However, it exhibits a coronoid process that leans backwards, a pointed pterygoid process, and the p1 and p3 are present. These are characteristics customarily associated with U. deningeri and U. arctos. Metric analyses show that Salbatore II fits within the cave bear variation, with a minimum overlap with brown bears once size is accounted for. However, geometric morphometric analyses show that Salbatore II is similar to U. arctos, but within U. deningeri variation. Based on the overall size and the morphological characteristics, Salbatore II displays U. deningeri affinities with many ancestral characteristics, suggesting a minimum mid-Middle Pleistocene age, a chronology rarely recorded in the Cantabrian region.

deningeri熊和spelaeus sensu lato熊是属于第四纪标志性洞穴熊谱系的时间物种。他们从早期晚期到中更新世晚期居住在伊比利亚。在这里，我们描述了一个完整的熊下颌骨从Salbatore II洞穴（巴斯克地区）恢复。为了评估它的分类，我们将它与其他欧洲更新世洞穴熊和棕熊进行了比较。对其形态进行了比较，并使用传统和三维几何形态计量学分析。下颌骨与穴居熊有几个形态上的相似之处，如高的躯干和深的咬窝。然而，冠状突向后倾斜，翼状突尖，p1和p3存在。这些特征通常与丹宁葛兰和阿克兰有关。计量分析表明，Salbatore II符合洞穴熊的变化，一旦考虑到体型，与棕熊的重叠最小。然而，几何形态分析表明Salbatore II与U. arctos相似，但属于U. deningeri变异。从整体大小和形态特征来看，Salbatore II具有许多与U. deningeri相似的祖先特征，表明其最晚出现在中更新世，这一年代在坎塔布连地区很少有记录。

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引用次数: 0

Paleoenvironmental reconstruction of a Neogene diatomite deposit from La Pampa Province (Argentina) 阿根廷拉潘帕省新近系硅藻土矿床的古环境重建

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.02.009

Rocío Fayó , Marcela Alcira Espinosa , Camilo Andrés Vélez-Agudelo

Diatomite deposits constitute siliceous biogenic sedimentary rocks primarily composed of diatoms. In Argentina, there is a scarcity of paleoenvironmental reconstructions for these deposits. This study focuses on the analysis of the diatom content in a Plio-Pleistocene diatomite from La Pampa Province. The aim is to identify diatom diversity and reconstruct the evolution of paleoenvironments. The studied section of 4.40 m is located at the CP site (38°08′40.5’’S; 67°09′23.2’’W, El Sauzal Formation). The profile is a laminated white diatomite with three levels of volcanic ash. Seven samples 50 cm-equidistant were extracted and oxidized with H₂O₂ for diatom analysis. 500 valves/slide were counted in order to calculate relative abundances. Diatom zones were defined using CONISS. The analysis revealed 72 morphospecies, with 28 of them exhibiting abundances >4%. The diatom flora is predominantly composed of small fragilarioid diatoms accompanied by Discostella, Aulacoseira, Epithemia, Rhopalodia, and Cymbella species, indicating a lacustrine origin. At the base, a paleolake with a relatively alkaline pH, low nitrogen concentrations and high phosphates (volcanic ash) favored the growth of a diverse diatom community. Towards the top, the dominance of fragilarioids, the decrease in freshwater planktonic taxa and the presence of gypsum suggest a shallower environment with increased salinity during the drier periods of the Plio-Pleistocene.

硅藻土矿床是主要由硅藻组成的硅质生物沉积岩。在阿根廷，这些矿床的古环境重建很少。本文对拉潘帕省一块上新世-更新世硅藻土进行了硅藻含量分析。目的是鉴定硅藻多样性，重建古环境演化。4.40 m的研究段位于CP站点(38°08′40.5”S；67°09′23.2”W， El Sauzal地层)。该剖面是一层白色硅藻土，有三层火山灰。提取等距50 cm的7个样品，用H2O2氧化硅藻分析。为了计算相对丰度，对500个阀门/玻片进行计数。用CONISS定义硅藻带。分析发现72种形态，其中28种的丰度为4%。硅藻区系主要由小的易碎硅藻组成，伴有disstella， Aulacoseira, Epithemia， Rhopalodia和Cymbella种，表明湖相起源。在底部，一个pH值相对碱性、氮浓度低、磷酸盐（火山灰）含量高的古湖泊有利于多样化硅藻群落的生长。在顶部，易碎类生物的优势，淡水浮游生物分类群的减少和石膏的存在表明，在上新世-更新世的干燥时期，环境较浅，盐度增加。

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引用次数: 0

Actualistic taphonomy of microvertebrates ingested by the barn owl (Tyto alba) in a forested area. Implications for the fossil record 森林地区仓鸮（Tyto alba）摄取的微型脊椎动物的实际分类。对化石记录的启示

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.05.011

Ana Carolina Moreano Ortiz , Pablo E. Ortiz , Mónica V. Pia , Mariana Mondini

Rodents are common prey of nocturnal raptor birds, which ingest whole individuals and subsequently expel partially digested remains as regurgitated pellets. This generates accumulations of skeletal elements that may become part of the fossil record. Inferring which predator was responsible of any given fossil microvertebrate assemblage allows assessing potential biases and making paleoecological inferences. Neotaphonomic studies allow modelling the particularities characterizing different raptors under different environmental conditions. Based on them, it is possible to suggest the predator involved in fossil microvertebrate assemblages by considering the taxonomic and anatomical abundance, the degree of digestive corrosion and that of breakage of skeletal remains. Yet, no detailed neotaphonomic studies on raptors had been made so far in NW Argentina, and other studies in South America have been made mainly in open and arid environments. This has forced paleontological studies to use analogues that might not be fully relevant. Here we present an actualistic study on rodent skeletal remains (NISP = 7540) recovered from modern pellets produced by the barn owl (Tyto alba), recovered at Villa Padre Monti (Tucumán, Argentina), a Yungas forest area partially affected by the presence of crops. The aim is to characterize the taphonomic traces of T. alba under these environmental conditions. The assemblage is composed of at least five species of Cricetidae rodents and a varied representation of skeletal elements, especially of the post-cranium; it has a high relative anatomical abundance (58.7%). Skeletal breakage levels are low, especially in the mandibles and post-cranium. Digestive corrosion is predominantly absent (62.1%) to light, although some elements with high degrees of digestive corrosion were found, even in the extreme digestion category. These results generally compare well with other taphonomic studies on the barn owl, and add data to the known variability of modern accumulations by this Strigiformes. They are thus expected to have an impact on the interpretations of fossil faunas.

啮齿类动物是夜间活动的猛禽的常见猎物，它们吞食整个个体，随后将部分消化的残骸以反刍的形式排出。这就产生了可能成为化石记录一部分的骨骼元素的积累。推断哪个捕食者对任何给定的化石微脊椎动物的组合负责，可以评估潜在的偏见，并做出古生态推断。新物种学研究可以对不同环境条件下不同猛禽的特征进行建模。在此基础上，考虑到微脊椎动物化石的分类和解剖学丰度、消化系统腐蚀程度和骨骼残骸的断裂程度，可以推测出微脊椎动物化石组合中涉及的捕食者。然而，到目前为止，还没有对阿根廷西北部的猛禽进行详细的新物种学研究，而南美洲的其他研究主要是在开阔和干旱的环境中进行的。这迫使古生物学研究使用可能不完全相关的类似物。在这里，我们对从谷仓猫头鹰（Tyto alba）生产的现代颗粒中回收的啮齿动物骨骼遗骸（NISP = 7540）进行了实际研究，这些颗粒在Villa Padre Monti （Tucumán，阿根廷）回收，这是一个部分受作物影响的Yungas森林地区。目的是在这些环境条件下表征白僵菌的埋藏痕迹。该组合由至少五种蟋蟀科啮齿动物和各种骨骼元素组成，特别是后颅骨；它具有较高的相对解剖丰度（58.7%）。骨骼断裂的程度很低，尤其是下颌骨和后颅骨。消化腐蚀主要不存在（62.1%），尽管在极端消化类别中发现了一些具有高度消化腐蚀的元素。这些结果通常与其他关于仓鸮的分类学研究相比较，并为这种隐形目的现代积累的已知变异性增加了数据。因此，它们有望对化石动物群的解释产生影响。

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引用次数: 0

Blender as a tool for palaeoichnological research: Case study from Lark Quarry 搅拌机作为古生物学研究的工具：来自Lark Quarry的案例研究

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.11.002

Anthony Romilio

The digitisation of tracks, tracksites, and trackmakers has become of increasing interest for modern dinosaur ichnologists, offering research methods for the objective acquisition and documentation of track surface topologies but can also significantly enhance scientific communication to broader communities by facilitating the visualisation of 2D and 3D tracksite and trackmaker data. This paper explores the expanded use of digital techniques for the study of palaeontological sites, specifically using Blender – a versatile open-source 3D software – on the dinosaur tracksites within the Lark Quarry Conservation Park. Blender is primarily a visualisation tool that enables, but is not limited to, the creation of detailed 3D models and animations. While this study highlights some of these functionalities, it notably demonstrates how Blender’s customisable Python scripting can be leveraged to automate the analysis of trackway parameters and biomechanical data. Moreover, this study introduces Blender add-ons directly relevant to ichnological studies with intuitive, user-friendly interfaces, enabling palaeontologists to effectively utilise advanced digital tools within their research. These innovations broaden the accessibility of advanced digital methods to the palaeontological community and pave the way for more efficient analysis of fossil trackways.

脚印、脚印地点和脚印制造者的数字化已经引起了现代恐龙技术专家越来越大的兴趣，它为脚印表面拓扑结构的客观获取和记录提供了研究方法，但也可以通过促进二维和三维脚印地点和脚印制造者数据的可视化，显著加强与更广泛社区的科学交流。本文探讨了在古生物遗址研究中扩大使用数字技术，特别是在Lark Quarry Conservation公园内的恐龙足迹遗址上使用Blender——一个多功能的开源3D软件。Blender主要是一个可视化工具，可以创建详细的3D模型和动画，但不限于此。虽然这项研究强调了其中的一些功能，但它特别展示了如何利用Blender的可定制Python脚本来自动分析轨道参数和生物力学数据。此外，本研究引入了与技术研究直接相关的Blender附加组件，具有直观，用户友好的界面，使古生物学家能够在研究中有效地利用先进的数字工具。这些创新拓宽了古生物学界先进数字方法的可及性，并为更有效地分析化石足迹铺平了道路。

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引用次数: 0

First evidence of ichnopathologies in Rhinoceripeda tasnadyi tracks from the Miocene of Hungary 在匈牙利中新世发现的塔斯纳迪鼻尖足动物足迹中发现的第一个技术病理学证据

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2024.08.009

M. Belvedere , F. Bertozzo , G. Botfalvai , L. Pandolfi

Despite a vast record, ichnological evidence of malformed or injured animals is extremely rare. During the re-examination of slabs collected from the Ipolytarnóc tracksite (Early Miocene, North Hungary) and housed at the Supervisory Authority for Regulatory Affairs, three “atypical” tracks were detected along the same trackway. They belong to the ichnotaxon Rhinoceripeda tasnadyi, attributed to a medium- to large-sized “hornless” Miocene rhinocerotids. The hoof of the left digit III appears to be split, rather than oval, at approximatively half of its width, giving an almost tetradactyl appearance to the footprints. The deformation due to overprinting is excluded because of the number of tracks showing the same variation. This injury/malformation could be identified as the atypical tracks belong to a trackway where the opposite impression is preserved and due to the large number of accessible R. tasnadyi footprints. These account for a wide range of the standard variability of the morphology at Ipolytarnóc. If the track record was limited, or when the atypical tracks do not belong to a trackway, it would not be possible to recognise those differences as ichnopathologies and, as a result, a different trackmaker would have been assessed, or a wrong ichnotaxonomical diagnosis would have been attributed.

尽管有大量的记录，但畸形或受伤动物的技术证据极其罕见。在重新检查从Ipolytarnóc轨道站点（早中新世，北匈牙利）收集的石板并保存在监管事务监管机构时，在同一轨道上发现了三条“非典型”轨道。它们属于一种中、大型的中新世“无角”犀类。左指III的蹄子似乎是分裂的，而不是椭圆形的，大约是其宽度的一半，给脚印一个几乎四足的外观。不包括套印引起的变形，因为显示相同变化的轨道数。这种损伤/畸形可以确定为非典型足迹属于一个相反的印痕被保留的足迹，并且由于大量可接近的R. tasnadyi脚印。这些解释了在Ipolytarnóc上广泛的标准形态变化。如果轨迹记录有限，或者当非典型轨迹不属于轨迹时，就不可能将这些差异识别为技术病理学，因此，可能会评估不同的轨迹制造者，或者可能会归因于错误的技术分类诊断。

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引用次数: 0

New early Pliocene Rhinocerotidae findings from Tuscany (Italy) and the Pliocene rhinocerotine record in Italy 意大利托斯卡纳早更新世犀牛科的新发现和意大利早更新世犀牛的记录

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-02-01 DOI: 10.1016/j.geobios.2023.12.012

Luca Pandolfi , Alberto Collareta , Dariusz Nowakowski , Giovanni Bianucci , Lorenzo Rook

An almost complete mandible from the Lower Pliocene deposits of Arcille (Tuscany) is described and investigated for the first time. The specimen is assigned to Pliorhinus megarhinus, which is documented in Italy from the latest Miocene to the mid-Pliocene. The studied specimen is larger than Stephanorhinus etruscus and S. jeanvireti, and morphologically fits P. megarhinus from the Early Pliocene of Montpellier (France), Vera Basin (Spain) and Val di Pugna Fangonero (Italy). This specimen represents the first stratigraphically well-documented Pliocene record of this species in Italy, the previous discoveries dating back to the 19th century or the beginning of the 20th century, hence lacking stratigraphic control. According to the obtained results, it is possible to assess the occurrence of P. megarhinus during the earliest Pliocene in Italy as well as to confirm the long-lasting persistence of this species, whose fossil record covers a timespan between 6.7 Ma and 3.5 Ma. During that time, P. megarhinus did seemingly undergo a trend of body mass reduction.

一个几乎完整的下颌骨从下上新世沉积的阿尔西尔（托斯卡纳）首次描述和调查。该标本属于大上新世上新世中期至中新世晚期在意大利发现的大上新世上新世上新世。所研究的标本比Stephanorhinus etruscus和S. jeanvireti大，形态上与来自法国蒙伯利埃（Montpellier）、西班牙维拉盆地（Vera Basin）和意大利Val di Pugna Fangonero的P. megarhinus吻合。该标本代表了该物种在意大利上新世的第一个地层记录，之前的发现可追溯到19世纪或20世纪初，因此缺乏地层控制。根据获得的结果，可以评估P. megarhinus在上新世早期在意大利的出现，并确认该物种的长期存在，其化石记录涵盖6.7 Ma至3.5 Ma的时间跨度。在这段时间里，巨尾鼩似乎确实经历了体重减少的趋势。

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引用次数: 0

A new enantiornithine (Aves: Ornithothoraces) from the Lower Cretaceous Xiagou Formation with unusually short pubes 下白垩统下沟组一种新的异鸟目动物（鸟类目：鸟胸目），短毛异常

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2025-01-17 DOI: 10.1016/j.geobios.2024.11.003

Jingmai K. O’Connor , Jessie Atterholt , Alexander D. Clark , Linqi Zhou , Cuo Peng , Xiaoqin Zhang , Hailu You

We describe a partial skeleton of an enantiornithine from the Changma locality of the Lower Cretaceous Xiagou Formation in northwestern China. The specimen is tentatively interpreted as a gastric pellet. The specimen preserves an unusually short pubis that is subequal in length to the ischium, an autapomorphy among enantiornithines, justifying erection of a new taxon, Novavis pubisculata nov. gen., nov. sp. The abbreviated length of the pubis suggests that the abdominal cavity in this species was proportionately shorter than in all other known enantiornithines. Although several muscles attach to the pubis, the mm. pubocaudalis internus and externus were probably the most functionally impacted by the increased distance between the pubes and caudal vertebrae and subsequent elongation of these muscles. In crown avians this would result in a decrease in the contraction speed of these muscles, which play a role in tail fanning and are thus important for flight during take-off and landing. Although the underlying function of the short pubis and changes in the size of the abdominal cavity are unknown, the widespread absence of aerodynamic tail musculature and plumage in enantiornithines may have relaxed pressures constraining the length of these muscles, such that elongation of these muscles through a shortened pubis was not detrimental to the aerodynamic abilities of these birds.

本文描述了中国西北地区下白垩统下沟组昌马地区的一种异鸟目恐龙的部分骨架。该标本暂定为胃颗粒。该标本保留了一个与坐骨长度近相等的异常短的耻骨，这是反鸟目动物中的一种自异形，证明了一个新分类单元的建立，Novavis pubisculata nov. gen., nov. sp.耻骨的缩短长度表明该物种的腹腔比所有其他已知的反鸟目动物都要短。虽然有几块肌肉与耻骨相连，但耻骨和尾椎之间的距离增加以及随后这些肌肉的延伸可能对耻骨内肌和耻骨外肌的功能影响最大。对于冠鸟来说，这将导致这些肌肉收缩速度的降低，这些肌肉在尾翼扇动中起作用，因此在起飞和降落过程中对飞行很重要。虽然短耻骨的潜在功能和腹腔大小的变化尚不清楚，但在反鸟鸟中普遍缺乏气动尾部肌肉组织和羽毛，这可能减轻了限制这些肌肉长度的压力，因此通过短耻骨延长这些肌肉并不会损害这些鸟类的气动能力。

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引用次数: 0

Occurrence of the trace fossil Hillichnus in Upper Cretaceous deposits in association with dinosaur footprints: A case from the Torotoro National Park in Bolivia 上白垩纪沉积物中与恐龙足迹相关的微量化石Hillichnus的出现：来自玻利维亚托罗托罗国家公园的一个案例

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2024-12-01 DOI: 10.1016/j.geobios.2024.08.018

Francisco J. Rodríguez-Tovar , Raúl Esperante , Roberto E. Biaggi , Nelson A. Llempen

We present here the occurrence of the scarce, complex trace fossil Hillichnus associated with abundant theropod tracks and locally bird tracks at the Carreras Pampa dinosaur track site in the Torotoro National Park (TTNP), Bolivia. Hillichnus is a complex trace fossil produced by tellinacean bivalves, revealing various behaviours including locomotion, feeding, respiration and defecation. The specimens occur on the surface of a grainstone bed in the Maastrichtian El Molino Formation, characterized by the presence of low-angle planar cross-stratification, ripple cross-lamination, wavy or convoluted lamination and wave ripples. The associated invertebrate trace fossil assemblage mainly consists of superficial sinuous structures of variable size, a variety of holes (vertical burrows?), and radial/rosette trace fossils. The associated vertebrate trace fossil assemblage consists of theropod footprints, many well-preserved theropod swim traces arranged in trackways and bird tracks. The record of Hillichnus, associated to the ichnological assemblage and to sedimentological data, suggests a marginal-marine setting with freshwater influence in shallow water for the Upper Cretaceous of the El Molino Formation at the Carreras Pampa area. Local stratigraphic successions suggest both marine and lacustrine/fluvial environments. The track-bearing bed shows evidence of exposure and is covered by sediments deposited in deeper water. The occurrence of Hillichnus in Bolivia, in association with dinosaur tracks on the same bed, has relevant implications for the characterization of paleoenvironmental conditions during the production of dinosaur tracks at the Carreras Pampa site in the TTNP.

我们在玻利维亚托罗托罗国家公园（TTNP）的Carreras Pampa恐龙足迹遗址中发现了与大量兽脚亚目恐龙足迹和当地鸟类足迹相关的稀有、复杂的Hillichnus足迹化石。Hillichnus是由tellinacean双壳类动物产生的复杂的痕迹化石，揭示了包括运动、摄食、呼吸和排便在内的各种行为。这些样品出现在马斯特里赫特El Molino组的颗粒岩层表面，其特征是存在低角度平面交叉层理、波纹交叉层理、波浪或卷曲层理和波浪波纹。伴生的无脊椎动物痕迹化石组合主要由大小不一的浅表弯曲构造、各种孔洞（垂直孔洞？）和放射状/玫瑰形痕迹化石组成。相关的脊椎动物足迹化石组合包括兽脚亚目恐龙足迹，许多保存完好的兽脚亚目恐龙游泳足迹分布在足迹和鸟的足迹上。与技术组合和沉积学数据相关联的Hillichnus记录表明，Carreras Pampa地区上白垩纪El Molino组在浅水中受到淡水影响的边缘海洋环境。当地的地层序列显示了海相和湖泊/河流环境。有轨迹的地层显示出暴露的证据，并被沉积在较深的水中的沉积物所覆盖。在玻利维亚发现的Hillichnus与同一层的恐龙足迹相关联，对TTNP Carreras Pampa遗址恐龙足迹生产过程中古环境条件的表征具有相关意义。

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引用次数: 0

New Chinese Jurassic damsel-dragonflies of the families Paragonophlebiidae, Selenothemistidae and Isophlebiidae (Odonata, Epiproctophora) from the Jurassic Ordos Basin of NW China 鄂尔多斯盆地侏罗系新侏罗系绢蜻蜓科、绢蜻蜓科和等绢蜻蜓科（绢蜻蜓目、绢蜻蜓目）

IF 1.6 4区地球科学 Q2 PALEONTOLOGY

Geobios

Pub Date : 2024-12-01 DOI: 10.1016/j.geobios.2024.08.014

André Nel , Minmin Xu , Yehao Wang , Xiangbo Song , Jian Gao , Gaozhe Ji , Diying Huang

The Jurassic damsel-dragonfly family Paragonophlebiidae was till now monogeneric, with the sole genus Paragonophlebia and the two species P. inexpectata and P. patriciae, from the Middle Jurassic of Central Asia. Here we describe the new genus and species Sinagonophlebia yananensis Nel and Huang, from the Middle Jurassic of China, and we attribute the late Triassic and early Jurassic Diastatommites liassina (Strickland, 1840) from UK to the same family. We restore it in the genus Diastatommites Tillyard, 1925. We also describe the selenothemistid Yananthemis zaoyuanensis Nel and Huang, nov. gen., nov. sp., plus an isophlebiid gen. et sp. indet. from the same outcrop. These three damsel-dragonflies increase our knowledge on the already impressive diversity of the Odonata from the Mesozoic of China.

侏罗纪少女蜻蜓科（Paragonophlebiidae）至今为单属，仅有Paragonophlebia属和P. inexpectata和P. patriciae两种，来自中亚中侏罗世。本文描述了中国中侏罗世新属和新种Sinagonophlebia yananensis Nel和Huang，并将英国晚三叠世和早侏罗世的Diastatommites liassina （Strickland, 1840）归为同一科。我们将其恢复为Diastatommites Tillyard， 1925。我们还报道了产硒植物枣园洋菊（Yananthemis zaoyuanensis Nel and Huang, nov. gen., nov. sp.），以及一种等参植物gen. et sp. indet。来自同一个露头。这三种豆娘蜻蜓增加了我们对中国中生代蜻蜓目多样性的认识。

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