A new Silurian fish close to the common ancestor of modern gnathostomes

  title={A new Silurian fish close to the common ancestor of modern gnathostomes},
  author={Qiang Li and You-an Zhu and Jing Lu and Yang Chen and Jianhua Wang and Lijian Peng and Guang-biao Wei and Min Zhu},
  journal={Current Biology},

Figures from this paper

The oldest complete jawed vertebrates from the early Silurian of China

Two new species of well-preserved jawed fishes with complete bodies from the early Silurian period (Telychian age, around 436 million years ago) of Chongqing, South China are described, which reveal a previously unseen diversification of jawed vertebrates in the earlySilurian, and provide detailed insights into the whole-body morphology of the jawing vertebrates of this period.

Squamation and scale morphology at the root of jawed vertebrates

This study reveals that the high regionalization of squamation and the bipartite histological structure of scale might be plesiomorphic for antiarchs, and jawed vertebrates in general.

A New Family of Galeaspids (Jawless Stem‐Gnathostomata) from the Early Silurian of Chongqing, Southwestern China

As the first fish described from the Llandovery Huixingshao Formation in Chongqing, Yongdongaspis provides new fossil evidence for the subdivision and correlation of the Upper Red Beds in South China.

Paleontology: There are more placoderms in the sea

  • Z. Johanson
  • Environmental Science, Geology
    Current Biology
  • 2021

Fossils reveal the deep roots of jawed vertebrates

Scarce evidence indicates that key evolutionary steps for jawed vertebrates occurred during or before the Silurian period, 444 million to 419 million years ago. Fossil finds pull back the curtain on



The oldest articulated osteichthyan reveals mosaic gnathostome characters

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.

The largest Silurian vertebrate and its palaeoecological implications

The largest pre-Devonian vertebrate described is a predatory marine osteichthyan from the Silurian Kuanti Formation of Yunnan, China, with an estimated length of about 1 meter, and this finding refutes the assumption that pre-Emsian vertebrates were restricted to small body sizes.

A Silurian placoderm with osteichthyan-like marginal jaw bones

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.

A Silurian maxillate placoderm illuminates jaw evolution

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.

Early Devonian cephalaspids (Vertebrata: Osteostraci: Cornuata) from the southern MacKenzie Mountains, N.W.T., Canada

ABSTRACT A diverse and well-preserved vertebrate fauna occurs in Early Devonian rocks of the Delorme Formation in the southern Mackenzie Mountains, Northwest Territories, Canada. The osteostracans of

Jaws and teeth of the earliest bony fishes

Andreolepis and Lophosteus are not only the oldest but also the most phylogenetically basal securely identified osteichthyans known so far, indicating that they can be assigned to the stem group.

A small antiarch, Minicrania lirouyii gen et sp nov, from the early Devonian of Qujing, Yunnan (China), with remarks on antiarch phylogeny

A new Early Devonian yunnanolepiform-like antiarch Minicrania lirouyii gen. et sp.

The origin and early phylogenetic history of jawed vertebrates

A series of remarkable new palaeontological discoveries, analytical advances and innovative reinterpretations of existing fossil archives have fundamentally altered a decades-old consensus on the relationships of extinct gnathostomes, delivering a new evolutionary framework for exploring major questions that remain unanswered, including the origin of jaws.

Early Silurian chondrichthyans from the Tarim Basin (Xinjiang, China)

The results corroborate previous work by recognising lamellin as the main component of sinacanthid spines and point to corresponding developmental patterns shared across the dermal skeleton of taxa with lameLLin and more derived chondrichthyans (e.g. in Seretolepis, Parexus).