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The oldest articulated osteichthyan reveals mosaic gnathostome characters
TLDR
The discovery of an exceptionally preserved primitive fish from the Ludlow of Yunnan, China, that represents the oldest near-complete gnathostome (jawed vertebrate) offers insights into the origin and early divergence of osteichthyans, and indicates that the minimum date for the actinopterygian–sarcoperygian split was no later than 419 million years ago. Expand
A Silurian placoderm with osteichthyan-like marginal jaw bones
TLDR
A three-dimensionally preserved 419-million-year-old placoderm fish from the Silurian of China is described that represents the first stem gnathostome with dermal marginal jaw bones (premaxilla, maxilla and dentary), features previously restricted to Osteichthyes. Expand
A primitive fish provides key characters bearing on deep osteichthyan phylogeny
TLDR
This 405-million-year-old fish from the Lower Devonian of Yunnan (China) demonstrates that cosmine in many fossil sarcopterygians arose step by step through the acquisition of a pore–canal network followed by the subsequently developed ability to resorb previous generations of odontodes and enamel. Expand
The earliest known stem-tetrapod from the Lower Devonian of China.
TLDR
The enlargement of the cerebral hemispheres and the possible presence of the pars tuberalis in this stem-tetrapod indicate that some important brain modifications related to terrestrial life had occurred at the beginning of the tetrapod evolution, much earlier than previously thought. Expand
Palaeontology: First Devonian tetrapod from Asia
TLDR
The discovery of the first Devonian tetrapod from Asia is reported, a finding that substantially extends the geographical range of these animals and raises new questions about their dispersal. Expand
An antiarch placoderm shows that pelvic girdles arose at the root of jawed vertebrates
TLDR
The finding shows that all jawed vertebrates (including antiarch placoderms) primitively possess both pectoral and pelvic fins and that the pelvic fins did not arise within gnathostomes at a point subsequent to the origin of jaws. Expand
A Silurian maxillate placoderm illuminates jaw evolution
TLDR
A second Silurian maxillate placoderm is described that more securely bridges the jawless toothlike plates of placoderms to the development of the jawed condition that ultimately led to the three-boned jaw in ancestors of modern vertebrates. Expand
A Devonian predatory fish provides insights into the early evolution of modern sarcopterygians
TLDR
The new skull material of Qingmenodus, a Pragian onychodont from China, is described using high-resolution computed tomography to image internal structures of the braincase and bridges the morphological gap between stem sarcopterygians and coelacanths and helps to illuminate the early evolution and diversification of crown sarcoperygians. Expand
Earliest known coelacanth skull extends the range of anatomically modern coelacanths to the Early Devonian.
TLDR
The earliest known coelacanth skull (Euporosteus yunnanensis sp. nov.) from the Early Devonian (late Pragian) of Yunnan, China is reported, lending support to the possibility that Eoactinistia is also an anatomically modern coelacanths, and provides a more refined reference point for studying the rapid early diversification and subsequent evolutionary conservatism of the coELacanths. Expand
A new osteichthyan from the late Silurian of Yunnan, China
TLDR
A phylogenetic analysis resolves Sparalepis within a previously recovered cluster of stem-sarcopterygians including Guiyu, Psarolepis and Achoania, suggesting that the South China block may have been an early center of diversification for early gnathostomes, well before the advent of the Devonian “Age of Fishes”. Expand
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