Zobrazeno 1 - 10
of 97
pro vyhledávání: '"early vertebrates"'
Publikováno v:
Royal Society Open Science, Vol 11, Iss 12 (2024)
Teeth are a key vertebrate innovation; their evolution is generally associated with the origin of jawed vertebrates. However, tooth-like structures already occur in jawless stem-gnathostomes; heterostracans bear denticles and morphologically distinct
Externí odkaz:
https://doaj.org/article/573b5245a89341b7b35b7fdc0d52bd1b
Publikováno v:
PeerJ, Vol 10, p e14418 (2022)
Fossil chondrichthyan remains are mostly known from their teeth, scales or fin spines only, whereas their cartilaginous endoskeletons require exceptional preservational conditions to become fossilized. While most cartilaginous remains of Famennian (L
Externí odkaz:
https://doaj.org/article/5973f149d9c647a4b807aa93aa8ad9ed
Autor:
Richard P. Dearden, Sam Giles
Publikováno v:
Royal Society Open Science, Vol 8, Iss 11 (2021)
The teeth of sharks famously form a series of transversely organized files with a conveyor-belt replacement that are borne directly on the jaw cartilages, in contrast to the dermal plate-borne dentition of bony fishes that undergoes site-specific rep
Externí odkaz:
https://doaj.org/article/979cd533b96d4bd0a21b642c812dec1e
Autor:
Maximov, Vadim V.
Publikováno v:
Philosophical Transactions: Biological Sciences, 2000 Sep . 355(1401), 1239-1242.
Externí odkaz:
https://www.jstor.org/stable/3066653
Publikováno v:
BMC Genomics, Vol 18, Iss 1, Pp 1-9 (2017)
Abstract Background The tropical gar (Atractosteus tropicus) is the southernmost species of the seven extant species of gar fishes in the world. In Mexico and Central America, the species is an important food source due to its nutritional quality and
Externí odkaz:
https://doaj.org/article/0b9362b20b804c4cb0a1c876dc3878ea
Akademický článek
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Publikováno v:
PeerJ, Vol 5, p e4081 (2017)
Our knowledge about the body morphology of many extinct early vertebrates is very limited, especially in regard to their post-thoracic region. The prompt disarticulation of the dermo-skeletal elements due to taphonomic processes and the lack of a wel
Externí odkaz:
https://doaj.org/article/f47bb23958824c079cb5af2b41bb5162
Autor:
Peilin Cheng, Kai Han, Qiong Shi, Chao Bian, Huan Ye, Qiwei Wei, Yunyun Lv, Rui Ruan, Yanping Li, Hui Zhang, Yu Huang, Chengyou Wang, Chuangju Li, Junming Xu, Chengcheng Shi, Zhiqiang Ruan, Xinxin You, Hao Du, Jinming Wu
Publikováno v:
Molecular Biology and Evolution
Sturgeons and paddlefishes (Acipenseriformes) occupy the basal position of ray-finned fishes, although they have cartilaginous skeletons as in Chondrichthyes. This evolutionary status and their morphological specializations make them a research focus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8f6f9d584f929e4d8e7d62b21aa28d49
https://doi.org/10.1093/molbev/msaa326
https://doi.org/10.1093/molbev/msaa326
Akademický článek
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Publikováno v:
The Evolution of Memory Systems, 2016, ill.
Externí odkaz:
https://doi.org/10.1093/acprof:oso/9780199686438.003.0004