Maria E McNamara,Bart E van Dongen,Nick P Lockyer et al.
Maria E McNamara et al.
Fossil melanin granules (melanosomes) are an important resource for inferring the evolutionary history of colour and its functions in animals. The taphonomy of melanin and melanosomes, however, is incompletely understood. In particular, the...
Endoskeletal structure in Cheirolepis (Osteichthyes, Actinopterygii), An early ray-finned fish [0.03%]
全骨鱼类棘鳍鱼亚纲无颌类_cheirolepis_的内骨骼结构
Sam Giles,Michael I Coates,Russell J Garwood et al.
Sam Giles et al.
As the sister lineage of all other actinopterygians, the Middle to Late Devonian (Eifelian-Frasnian) Cheirolepis occupies a pivotal position in vertebrate phylogeny. Although the dermal skeleton of this taxon has been exhaustively described...
Christopher D Dean,Philip D Mannion,Richard J Butler
Christopher D Dean
Pterosaurs, a Mesozoic group of flying archosaurs, have become a focal point for debates pertaining to the impact of sampling biases on our reading of the fossil record, as well as the utility of sampling proxies in palaeodiversity reconstr...
Cyanobacteria and the Great Oxidation Event: evidence from genes and fossils [0.03%]
蓝菌与大氧化事件：来自基因和化石的证据
Bettina E Schirrmeister,Muriel Gugger,Philip C J Donoghue
Bettina E Schirrmeister
Cyanobacteria are among the most ancient of evolutionary lineages, oxygenic photosynthesizers that may have originated before 3.0 Ga, as evidenced by free oxygen levels. Throughout the Precambrian, cyanobacteria were one of the most importa...
D M Raup
D M Raup
Four neocatastrophist claims about mass extinction are currently being debated; they are that: 1, the late Cretaceous mass extinction was caused by large body impact; 2, as many as five other major extinctions were caused by impact; 3, the ...
Review
Palaeontology. 1987;30(1):1-13. DOI: 1987
Vendian microfossils in metasedimentary cherts of the Scotia Group, Prins Karls Forland, Svalbard [0.03%]
塞布尔岛普林斯卡尔夫兰德地区斯科特群变沉积岩中叠层石中的瓮匣形幼虫化石
A H Knoll
A H Knoll
Sedimentary rocks of the Scotia Group, Prins Karls Forland, Svalbard, have been metamorphosed to lower greenschist facies. Yet Scotia chert nodules contain abundant organic-walled microfossils belonging to at least seventeen taxa. Their bla...