Friday, December 19, 2014

Nidelric pugio: a New Fossil From Very Rare Chancellorids From the Cambrian Chengjiang Biota


A rare 520 million year old fossil shaped like a 'squashed bird's nest' that will help to shed new light on life within Earth's ancient seas has been discovered in China by an international research team - and will honour the memory of a University of Leicester scientist who passed away earlier this year.

The research team behind the discovery was led by Professor Xianguang Hou from the Yunnan Key Laboratory for Palaeobiology at Yunnan University in China with collaboration from the Universities of Leicester and Oxford.

The fossil, from Chengjiang in southern China, is of a probable 'chancelloriid', a group of bizarre, balloon-shaped animals with an outer skeleton of defensive spines. The animal was flattened during the fossilisation process so that it looks like a squashed bird's nest.

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In southern China, rocks 520 million years old in Chengjiang County, Yunnan Province yield a diverse array of fossils preserved with traces of their soft anatomy, including their legs, eyes, guts and even brains.

Amongst the fossils are many animals that can be related to modern forms, including distant relatives of arthropods such as crabs and lobsters, and a wide variety of worms.

There are also several enigmatic fossils that don't seem to fit in with anything living today, and amongst these are the chancelloriids.

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