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Latest Hemichordates Stories

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....

Graptolite Fossils Offer New Insights On Colony Complexity
2012-10-03 09:48:09

Alan McStravick for redOrbit.com - Your Universe Online In what is perhaps the best outcome of hoarding ever, researchers revisited the fossil records of a specimen that has been stored in a museum for over a century. Dr. Jan Zalasiewicz of the Department of Geology at the University of Leicester reviewed the fossil of the graptolite, a member of a planktonic colony that existed nearly a half billion years ago. This specific specimen was found in the Southern Uplands of Scotland....

rhabdopleura-compacta-colony
2012-09-08 08:09:09

April Flowers for redOrbit.com - Your Universe Online "Out with the old and in with the new" is an adage we have all heard and probably lived by in this world of fast changing technology and fads.  But some tiny sea critters are showing us, newer isn't always better. Rhabdopleurids are small worm shaped animals that live on the ocean floor.  They build tube like homes of collagen on the shells of dead clams.  Rhabdopleurid colonies are small, and they are definitely not...

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....

2010-12-03 15:54:50

Our research at the State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, has shown, based on a refined division and correlation of the graptolite-bearing strata in southern Jiangxi, China, that the Kwangsian Orogeny commenced in the early Katian Age of the Late Ordovician. Because of its significant research value, this study is published in Issue 11 of Science China Earth Sciences. An angular unconformity separating the Lower-Middle...

2007-02-14 09:01:01

By Gupta, Neal S; Briggs, Derek E G; Pancost, Richard D Graptolites are important fossils in Early Palaeozoic assemblages. Preserved graptolite periderm consists dominantly of an aliphatic polymer, immune to base hydrolysis. It contains no protein even though its structure, and chemical analyses of the periderm of the living relative Rhabdopleura, indicate that it was originally collagen. This anomaly was previously interpreted as the result of replacement by macromolecular material from...