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Eranga Thilina Jayashantha
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Two Fossils Become One!

An exciting development in our understanding of another critter from the middle Cambrian (505 million years old) Burgess Shale.

Formerly classified as an obscure worm and an odd alga, Oesia (the worm) and Margaretia (the alga) are now believed to be an acorn worm (Oesia) that lived in a tube like structure (Margaretia).

This is not the first time that two or more fossils from seemingly different animals (or in this case an animal and a plant) ended up being parts of a single organism. The most famous amalgamation was that of Anomalocaris canadensis and Peytoia nathorsti (see here: https://goo.gl/2W1WG1).

I wonder what other exciting discoveries still remain to be uncovered from British Columbia's Cambrian treasure chest?


#FossilFriday  
BMC Biology
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Piochaspis sellata from the middle Cambrian Chisholm shale of Nevada.

Photo (C) Dan Bowden

#TrilobiteTuesday
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