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Latest Chordate Stories

Ancient Eel-Like Chordates Linked To Evolution Of Human Skeleton
2013-10-17 07:59:04

redOrbit Staff & Wire Reports - Your Universe Online An international team of paleontologists has published new research in the journal Nature revealing that the human skeleton did not evolve from ancient predatory fossil fish, as previously believed. Rather, the human skeleton evolved as a way to protect against predators such as the conodont, extinct eel-like chordates that evolved tooth-like structures and tissues independently of other creatures, according to experts from...

Burgess Shale Fossil Provides Crucial Missing Link
2013-03-14 05:05:04

April Flowers for redOrbit.com - Your Universe Online Located in Yoho National Park, Canada's Burgess Shale fossil beds have yielded yet another major scientific discovery. Scientists from the University of Toronto, the University of Cambridge, and the University of Montreal have unearthed a strange phallus-shaped creature from the 505 million year-old rock layers. The study, published in a recent issue of Nature, confirms Spartobranchus tenuis as a member of the acorn worms group....

2012-03-14 22:03:04

In a brainless marine worm, MBL researchers find the developmental 'scaffold' for the vertebrate brain The origin of the exquisitely complex vertebrate brain is somewhat mysterious. "In terms of evolution, it basically pops up out of nowhere. You don't see anything anatomically like it in other animals," says Ariel Pani, an investigator at the Marine Biological Laboratory (MBL) in Woods Hole and a graduate student at the University of Chicago. But this week in the journal Nature, Pani...

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2011-03-25 07:45:53

525-million-year-old discovery of 'feathered helmet from beyond the clouds' Researchers from China, Leicester and Oxford have discovered a remarkable fossil which sheds new light on an important group of primitive sea creatures. The 525-million-year-old fossil belongs to a group of tentacle-bearing creatures which lived inside hard tubes. Previously only the tubes have been seen in detail but this new specimen clearly shows the soft parts of the body including tentacles for feeding....

2011-02-16 15:38:44

Scientists reorganise the animal phylogenetic tree An international team of scientists including Albert Poustka from the Max Planck Institute for Molecular Genetics in Berlin has discovered that Xenoturbellida and the acoelomorph worms, both simple marine worms, are more closely related to complex organisms like humans and sea urchins than was previously assumed. As a result they have made a major revision to the phylogenetic history of animals. Up to now, the acoelomate worms were viewed as...

2011-02-09 23:48:09

Two groups of lowly marine worms are related to complex species including vertebrates (such as humans) and starfish, according to new research. Previously thought to be an evolutionary link between simple animals such as jellyfish and the rest of animal life - the worms' surprising promotion implies that they have not always been as simple as they now appear. Although the marine worms Xenoturbella and Acoelomorpha are very simple animals "“ they lack a developed nervous system or gut...

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2006-11-06 15:26:43

Genetic analysis of an obscure, worm-like creature retrieved from the depths of the North Atlantic has led to the discovery of a new phylum, a rare event in an era when most organisms have already been grouped into major evolutionary categories. The analysis also appears to shed light on the ancestor of chordates, the backboned animals that include human beings and two small invertebrate groups closely related to one another: lancelets and tunicates. Its a tremendous surprise that this...


Latest Chordate Reference Libraries

Sea Pork, Aplidium californicum
2014-01-12 00:00:00

Sea Pork (Aplidium californicum) is a species of sea squirt (tunicate) in the Polyclinidae family. It is quite common on the west coast of North America from British Columbia to Baja California, and the Galapagos Islands. It is found in the intertidal zone and at depths down to 280 feet. This is a compound tunicate forming sheets, mounds, or slabs on rocks and other hard substrates. It is jelly-like in consistency, and is 0.4 to 1.2 inches thick. It is shiny yellow, orange, reddish-brown...

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Word of the Day
snash
  • To talk saucily.
  • Insolent, opprobrious language; impertinent abuse.
This word is Scots in origin and probably imitative.