Pub Date : 2013-06-01DOI: 10.1127/palb/290/2014/65
R. Roessler, Mathias Merbitz, V. Annacker, Ludwig Luthardt, R. Noll, R. Neregato, R. Rohn
{"title":"The root systems of Permian arborescent sphenopsids: evidence from the Northern and Southern hemispheres","authors":"R. Roessler, Mathias Merbitz, V. Annacker, Ludwig Luthardt, R. Noll, R. Neregato, R. Rohn","doi":"10.1127/palb/290/2014/65","DOIUrl":"https://doi.org/10.1127/palb/290/2014/65","url":null,"abstract":"","PeriodicalId":56273,"journal":{"name":"Palaeontographica Abteilung B-Palaeophytologie Palaeobotany-Palaeophytology","volume":"110 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2013-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79265005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-12-07DOI: 10.1127/PALB/289/2012/43
Marie-Claude Jolly-Saad, R. Bonnefille
{"title":"Lower Pliocene Fossil Wood from the Middle Awash Valley, Ethiopia","authors":"Marie-Claude Jolly-Saad, R. Bonnefille","doi":"10.1127/PALB/289/2012/43","DOIUrl":"https://doi.org/10.1127/PALB/289/2012/43","url":null,"abstract":"","PeriodicalId":56273,"journal":{"name":"Palaeontographica Abteilung B-Palaeophytologie Palaeobotany-Palaeophytology","volume":"16 1","pages":"43-73"},"PeriodicalIF":1.6,"publicationDate":"2012-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74024350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. Mohr, S. Schultka, Herbert Suess, M. E. Bernardes-DE-Oliveira
A new gymnosperm taxon from the Lower Cretaceous (upper Aptian to possibly lower Albian) Crato Formation of Brazil, Duartenia araripensis gen. nov. et sp. nov. is described. The most prominent specimen, a branch with attached lateral branches of higher orders exhibits a distinct anisotomous branching pattern. The very dense wood is composed of tracheids with spaced and partly contiguous uniseriate pits and low rays with one pit per cross-field (mixed protopinaceous type). When foliage is not abraded, Duartenia exhibits coriacious Brachyphyllum-type leaves. Duartenia may be linked to cheirolepid conifers, however, the systematic affinity remains uncertain. The dense wood, characteristic growth pattern and thick, scale like, trichome bearing leaves may be related to ecological conditions that reflect a seasonally dry climate.
本文报道了巴西下白垩统(上阿普梯统至可能下阿普梯统)克拉托组一个新的裸子植物分类群，Duartenia araripensis gen. nov. et sp. nov.。最突出的标本，一个具有高阶分支的分支，表现出明显的各向异性分支模式。非常致密的木材由管胞组成，管胞具有间隔和部分相邻的单元化凹坑和低射线，每交叉场有一个凹坑(混合原生型)。当叶片未被磨损时，Duartenia呈现出皮质的短叶类叶片。Duartenia可能与首足类针叶树有关，但其系统亲缘性仍不确定。茂密的木材，特有的生长模式和厚的鳞片状毛状叶片可能与反映季节性干燥气候的生态条件有关。
{"title":"A new drought resistant gymnosperm taxon Duartenia araripensis gen. nov et sp nov (Cheirolepidiaceae?) from the Early Cretaceous of Northern Gondwana","authors":"B. Mohr, S. Schultka, Herbert Suess, M. E. Bernardes-DE-Oliveira","doi":"10.1127/PALB/289/2012/1","DOIUrl":"https://doi.org/10.1127/PALB/289/2012/1","url":null,"abstract":"A new gymnosperm taxon from the Lower Cretaceous (upper Aptian to possibly lower Albian) Crato Formation of Brazil, Duartenia araripensis gen. nov. et sp. nov. is described. The most prominent specimen, a branch with attached lateral branches of higher orders exhibits a distinct anisotomous branching pattern. The very dense wood is composed of tracheids with spaced and partly contiguous uniseriate pits and low rays with one pit per cross-field (mixed protopinaceous type). When foliage is not abraded, Duartenia exhibits coriacious Brachyphyllum-type leaves. Duartenia may be linked to cheirolepid conifers, however, the systematic affinity remains uncertain. The dense wood, characteristic growth pattern and thick, scale like, trichome bearing leaves may be related to ecological conditions that reflect a seasonally dry climate.","PeriodicalId":56273,"journal":{"name":"Palaeontographica Abteilung B-Palaeophytologie Palaeobotany-Palaeophytology","volume":"18 1","pages":"1-25"},"PeriodicalIF":1.6,"publicationDate":"2012-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75047926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-07-25DOI: 10.1127/PALB/288/2012/161
Marie-Claude Jolly-Saad, M. Dupéron-Laudoueneix, J. Dupéron, R. Bonnefille
{"title":"5.8 Myr old Mimosoideae fossil woods from Ethiopia and comparison with African Albizia","authors":"Marie-Claude Jolly-Saad, M. Dupéron-Laudoueneix, J. Dupéron, R. Bonnefille","doi":"10.1127/PALB/288/2012/161","DOIUrl":"https://doi.org/10.1127/PALB/288/2012/161","url":null,"abstract":"","PeriodicalId":56273,"journal":{"name":"Palaeontographica Abteilung B-Palaeophytologie Palaeobotany-Palaeophytology","volume":"96 1","pages":"161-187"},"PeriodicalIF":1.6,"publicationDate":"2012-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75900597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-06-01DOI: 10.1127/PALB/288/2012/135
Shuangxing Guo, Z. Kvaček, S. Manchester, Zhekun Zhou
An emended diagnosis of the extinct cupressoid genus Ditaxocladus S. X. GUO & Z. H. SUN (syn. Fokieniopsis MCIVER & BASINGER) and its three species is proposed based on new collections from the type locality in the Paleocene Wulonggu Formation of Altai in NW China, and other sites from China, SE Russia and western North America. Ditaxocladus planiphyllus S. X. GUO & Z. H. SUN (generitype) is now known from compound racemose fertile branches bearing several opposite pairs of globose to sub-globose seed cones composed of 6-12 decussate peltate scales, in addition to typically oppositely branched sprays. Besides D. planiphyllus, two more species are recognized based on differences in seed cone morphology. D. kivdensis KODRUL in KRASSILOV et al. from the Paleocene of Raichikha in Amur Province, Russia, is distinguished by similar but slender and pendulous cones, while D. catenulatus (W. A. BELL) S. X. GUO, KVACEK, MANCHESTER & Z. K. ZHOU comb. n. (syn. Fokieniopsis catenulata (W. A. BELL) MCIVER & BASINGER and Fokienia ravenscragensis MCIVER & BASINGER) typified by early Paleocene records in North America bears ovoid seed cones with a higher number of cone scales. All three species share the same type of bipinnately and oppositely ramified elongate sprays of cladode-like foliage and pinnately and oppositely arranged seed cones at successive nodes on compound racemose fertile branches. They differ from the living Fokienia, with which they were formerly compared, in oppositely (vs. alternately) branched leafy sprays and oppositely clustered (vs. solitary) seed cones consisting of much fewer cone scales (6-12 vs. 12-18 in Fokienia). Sterile foliage attributed to Ditaxocladus occurs in the Upper Cretaceous to Paleocene of North America, Russia and Paleocene of Spitsbergen. Tracing differentiation of Ditaxocladus populations (or species) over the Northern Hemisphere is hampered by incompleteness of most records based on quite uniform foliage without seed cones. Tetraclinis salicornioides (UNGER) KVACEK from the Eocene to Pliocene of Europe and the Oligocene to Miocene of North America, which shares very similar gross morphology of foliage, differs from Ditaxocladus in the quadrivalvate seed cones and papillate leaf epidermis with undulate anticlinal walls.
根据中国西北部阿尔泰地区古新世五龙谷组模式地点以及中国、俄罗斯东南部和北美西部其他地点的新标本，提出了已灭绝的柏树属Ditaxocladus S. X. GUO & Z. H. SUN (syn. Fokieniopsis MCIVER & BASINGER)及其3个种的修正诊断。Ditaxocladus planiphyllus S. X. GUO & zz . H. SUN(属型)现在已知的是，除了典型的相反分枝的喷雾外，还从具有6-12个相互对生的盾状鳞片组成的几对相反的球形到亚球形种子球果的复合总状可繁殖枝上。除了planiphyllus外，根据球果形态的差异还可以识别出另外两个种。KRASSILOV等人来自俄罗斯阿木尔省Raichikha古新世的d.k ivdensis KODRUL以相似但细长且下垂的球果为特征，而d.k etenulatus (W. A. BELL) s.x. GUO, KVACEK, MANCHESTER & Z. k ZHOU梳状。以北美早古新世记录为代表的Fokieniopsis catenulata (W. a . BELL) MCIVER & BASINGER和Fokienia ravenscragensis MCIVER & BASINGER)的种子球果呈卵形，球果鳞片较多。所有三种都具有相同类型的羽状和相反分枝的枝状叶的细长喷雾，以及羽状和相反排列的种子球果在复合总状可育枝上的连续节上。它们与以前被比较过的活株的不同之处在于相反(相对于交替)分枝的叶状喷雾和相反聚集的(相对于单生的)由更少的球果鳞片组成的种子球果(6-12对12-18)。在北美、俄罗斯和斯匹次卑尔根岛的上白垩世至古新世，都有归于Ditaxocladus的不育叶。北半球双轴枝属植物种群(或种)分化的追踪由于大多数记录的不完整性而受到阻碍，这些记录基于相当均匀的叶片而没有种球果。欧洲始新世至上新世和北美洲渐新世至中新世的四棱棱属(Tetraclinis salicornioides, UNGER) KVACEK与Ditaxocladus在四棱棱的种子球果和具有波状背斜壁的乳突状叶表皮上具有非常相似的大体叶形态。
{"title":"Ditaxocladus (extinct Cupressaceae, Cupressoideae) from the Upper Cretaceous and Paleocene of the Northern Hemisphere","authors":"Shuangxing Guo, Z. Kvaček, S. Manchester, Zhekun Zhou","doi":"10.1127/PALB/288/2012/135","DOIUrl":"https://doi.org/10.1127/PALB/288/2012/135","url":null,"abstract":"An emended diagnosis of the extinct cupressoid genus Ditaxocladus S. X. GUO & Z. H. SUN (syn. Fokieniopsis MCIVER & BASINGER) and its three species is proposed based on new collections from the type locality in the Paleocene Wulonggu Formation of Altai in NW China, and other sites from China, SE Russia and western North America. Ditaxocladus planiphyllus S. X. GUO & Z. H. SUN (generitype) is now known from compound racemose fertile branches bearing several opposite pairs of globose to sub-globose seed cones composed of 6-12 decussate peltate scales, in addition to typically oppositely branched sprays. Besides D. planiphyllus, two more species are recognized based on differences in seed cone morphology. D. kivdensis KODRUL in KRASSILOV et al. from the Paleocene of Raichikha in Amur Province, Russia, is distinguished by similar but slender and pendulous cones, while D. catenulatus (W. A. BELL) S. X. GUO, KVACEK, MANCHESTER & Z. K. ZHOU comb. n. (syn. Fokieniopsis catenulata (W. A. BELL) MCIVER & BASINGER and Fokienia ravenscragensis MCIVER & BASINGER) typified by early Paleocene records in North America bears ovoid seed cones with a higher number of cone scales. All three species share the same type of bipinnately and oppositely ramified elongate sprays of cladode-like foliage and pinnately and oppositely arranged seed cones at successive nodes on compound racemose fertile branches. They differ from the living Fokienia, with which they were formerly compared, in oppositely (vs. alternately) branched leafy sprays and oppositely clustered (vs. solitary) seed cones consisting of much fewer cone scales (6-12 vs. 12-18 in Fokienia). Sterile foliage attributed to Ditaxocladus occurs in the Upper Cretaceous to Paleocene of North America, Russia and Paleocene of Spitsbergen. Tracing differentiation of Ditaxocladus populations (or species) over the Northern Hemisphere is hampered by incompleteness of most records based on quite uniform foliage without seed cones. Tetraclinis salicornioides (UNGER) KVACEK from the Eocene to Pliocene of Europe and the Oligocene to Miocene of North America, which shares very similar gross morphology of foliage, differs from Ditaxocladus in the quadrivalvate seed cones and papillate leaf epidermis with undulate anticlinal walls.","PeriodicalId":56273,"journal":{"name":"Palaeontographica Abteilung B-Palaeophytologie Palaeobotany-Palaeophytology","volume":"10 1","pages":"135-159"},"PeriodicalIF":1.6,"publicationDate":"2012-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84817845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-03-02DOI: 10.1127/PALB/288/2012/41
Vijaya, S. Murthy, Bireswar Chakraborty, Joyti Shanker Roy
The first stratigraphic borehole EBM-1 in the Muditoli block in the eastern part of the East Bokaro Coalfield, Damodar Basin, is worked out for its spore-pollen content. Gondwana sediments, approximately 1185.00 m thick, comprising green shales, carbonaceous shales, sandstones and coal seams have shown many levels of changing patterns in the spore-pollen groups in the Barren Measures and Barakar formations. Between 1198.30–1095.25 m the specimens are very dark brown and show a distorted exinal surface. The presence of radial monosaccate pollen taxa proves that this stratum is referable to the Talchir Formation, Early Permian. In the up-section, an abundance of Faunipollenites, Scheuringipollenites, Densipollenites and Striatopodocarpites is observed. The relative abundance of these taxa delimits varied levels in the palynosequence of the studied strata from 1086.95 to 13.00 m. Hence, it is inferred that these deposits contain representative palynoassemblages of Early to Late Permian age. The FAD’s of Lundbladispora micro conata, Playfordiaspora cancellosa and Arcuatipollenites pellucidus observed at 13.00, 51.50, and 66.70 m depth enhance the end of the Permian level, as these elements are the key species to mark the transition from the Permian into the Lower Triassic. Non-productive strata at varied depths in this complete succession contain an abundance of woody shreds, vegetal matter, and less of palynomorphs, maybe due to the depositional set-up within the sediments during Permian time.
{"title":"Palynological dating of a subsurface coal bearing horizon in East Bokaro Coalfield, Damodar Basin, Jharkhand, India","authors":"Vijaya, S. Murthy, Bireswar Chakraborty, Joyti Shanker Roy","doi":"10.1127/PALB/288/2012/41","DOIUrl":"https://doi.org/10.1127/PALB/288/2012/41","url":null,"abstract":"The first stratigraphic borehole EBM-1 in the Muditoli block in the eastern part of the East Bokaro Coalfield, Damodar Basin, is worked out for its spore-pollen content. Gondwana sediments, approximately 1185.00 m thick, comprising green shales, carbonaceous shales, sandstones and coal seams have shown many levels of changing patterns in the spore-pollen groups in the Barren Measures and Barakar formations. Between 1198.30–1095.25 m the specimens are very dark brown and show a distorted exinal surface. The presence of radial monosaccate pollen taxa proves that this stratum is referable to the Talchir Formation, Early Permian. In the up-section, an abundance of Faunipollenites, Scheuringipollenites, Densipollenites and Striatopodocarpites is observed. The relative abundance of these taxa delimits varied levels in the palynosequence of the studied strata from 1086.95 to 13.00 m. Hence, it is inferred that these deposits contain representative palynoassemblages of Early to Late Permian age. The FAD’s of Lundbladispora micro conata, Playfordiaspora cancellosa and Arcuatipollenites pellucidus observed at 13.00, 51.50, and 66.70 m depth enhance the end of the Permian level, as these elements are the key species to mark the transition from the Permian into the Lower Triassic. Non-productive strata at varied depths in this complete succession contain an abundance of woody shreds, vegetal matter, and less of palynomorphs, maybe due to the depositional set-up within the sediments during Permian time.","PeriodicalId":56273,"journal":{"name":"Palaeontographica Abteilung B-Palaeophytologie Palaeobotany-Palaeophytology","volume":"109 6 1","pages":"41-63"},"PeriodicalIF":1.6,"publicationDate":"2012-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89393721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-03-02DOI: 10.1127/PALB/288/2012/65
Margeurite Salard-Cheboldaeff, M. Dupéron-Laudoueneix, J. Dupéron
{"title":"Permineralized cainozoic woods from New-Caledonia","authors":"Margeurite Salard-Cheboldaeff, M. Dupéron-Laudoueneix, J. Dupéron","doi":"10.1127/PALB/288/2012/65","DOIUrl":"https://doi.org/10.1127/PALB/288/2012/65","url":null,"abstract":"","PeriodicalId":56273,"journal":{"name":"Palaeontographica Abteilung B-Palaeophytologie Palaeobotany-Palaeophytology","volume":"83 1","pages":"65-97"},"PeriodicalIF":1.6,"publicationDate":"2012-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85831122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2012-03-02DOI: 10.1127/PALB/288/2012/99
Illora Sen, D. K. Parua, S. Bera, M. Sultan-ul-Islam, I. Poole
{"title":"Contribution to the Neogene fossil wood record and palaeoecological understanding of Bangladesh","authors":"Illora Sen, D. K. Parua, S. Bera, M. Sultan-ul-Islam, I. Poole","doi":"10.1127/PALB/288/2012/99","DOIUrl":"https://doi.org/10.1127/PALB/288/2012/99","url":null,"abstract":"","PeriodicalId":56273,"journal":{"name":"Palaeontographica Abteilung B-Palaeophytologie Palaeobotany-Palaeophytology","volume":"1 1","pages":"99-133"},"PeriodicalIF":1.6,"publicationDate":"2012-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77597805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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