Chinese report important fish fossil find

May 05, 2006

Chinese researchers say a newly discovered fish species that lived more than 400 million years ago may represent a bridge between two vertebrate lineages.

The creature -- found in Yunnan, China -- combines features shown by ray-finned bony fishes, which include the majority of modern fish species, and by lobe-finned bony fishes, the group that spawned the ancestors of today's land vertebrates.

The ancient fish, represented by chunks from four separate skulls, has a skull roof much like that of actinopterygians, the group that includes most modern fish. But the fine features of its anatomy may also shed light on the evolutionary origin of cosmine -- a hard surface-tissue found in many fossil sarcopterygians, the fish that later gave rise to land vertebrates.

Cosmine is characterized by a network of pores and canals in the tissue, overlaid by a single enamel-based layer, reported Min Zhu and colleagues at the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing.

They detail the unusual fish in this week's issue of Nature.

Copyright 2006 by United Press International

Explore further: Remains of French ship being reassembled in Texas

add to favorites email to friend print save as pdf

Related Stories

New evidence on Neanderthal mixing

Oct 23, 2014

New research on a 45,000-year-old Siberian thighbone has narrowed the window of time when humans and Neanderthals interbred to between 50,000 and 60,000 years ago, and has shown that modern humans reached ...

Early warning system for fish farmers

Oct 08, 2014

A novel autonomous biosensor may help scientists to detect environmental hazards in the sea at an early stage. But applying such approach to the marine environment is a huge challenge.

Recommended for you

Remains of French ship being reassembled in Texas

6 hours ago

A frigate carrying French colonists to the New World that sank in a storm off the Texas coast more than 300 years ago is being reassembled into a display that archeologists hope will let people walk over ...

User comments : 0