Tag Archives: fossilization

Extinct ‘Mega Claw’ Creature Had Spider-Like Brain

UA Regents’ Professor Nicholas Strausfeld and an international team of researchers have discovered the earliest known complete nervous system exquisitely preserved in the fossilized remains of a never-before described creature that crawled or swam in the ocean 520 million years ago.

A team of researchers led by University of Arizona Regents’ Professor Nick Strausfeld and London Natural History Museum’s Greg Edgecombe have discovered the earliest known complete nervous system, exquisitely preserved in the fossilized remains of a never-before described creature that crawled or swam in the ocean 520 million years ago.

The find suggests that the ancestors of chelicerates – spiders, scorpions and their kin – branched off from the family tree of other arthropods – including insects, crustaceans and millipedes – more than half a billion years ago. (more…)

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Ancient Fossilized Sea Creatures Yield Oldest Biomolecules Isolated Directly from a Fossil

COLUMBUS, Ohio — Though scientists have long believed that complex organic molecules couldn’t survive fossilization, some 350-million-year-old remains of aquatic sea creatures uncovered in Ohio, Indiana, and Iowa have challenged that assumption.

The spindly animals with feathery arms—called crinoids, but better known today by the plant-like name “sea lily”—appear to have been buried alive in storms during the Carboniferous Period, when North America was covered with vast inland seas. Buried quickly and isolated from the water above by layers of fine-grained sediment, their porous skeletons gradually filled with minerals, but some of the pores containing organic molecules were sealed intact. (more…)

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