Apr. 24, 2012: A close-up reveals the intriguing texture of the seven-foot-long specimen from the Ordovician period, found by Ron Fine, an amateur paleontologist from Dayton, Ohio.

The discovery of a very large, very mysterious ‘monster’ by an amateur Ohio paleontologist has researchers baffled and asking for answers. Around 450 million years ago, shallow seas covered ...

Life in the Late Ordovician. Four hundred and fifty (450) million years ago, during the Late Ordovician, most of Ohio was under water. At that time, the Oxford, Ohio area was part of a large inland ...

Beneath your feet would be tiny fragments of trilobites, crinoids, and other critters that lived in a shallow sea, more than 400 million years ago, during the Ordovician Period.

Ordovician reefs were also home to large sea lilies, relatives of sea stars. Anchored to the bottom inside calcareous tubes, they collected food particles with feathery arms that waved in the ...

Vertical decoupling in Late Ordovician anoxia due to reorganization of ocean circulation. Nature Geoscience , 2021; DOI: 10.1038/s41561-021-00843-9 Cite This Page : ...

Ordovician sea life. Credit: Fritz Geller-Grimm / National Museum of Natural History / CC BY-SA 2.5. Schematic diagram of species loss controlled by climate change during the LOME.

However, the Ordovician witnessed the rise of two other large predators, equal to or surpassing anomalocaridids in size — eurypterids, or sea scorpions, and nautiloids, which resembled squid ...

Ordovician sea life. Credit: Fritz Geller-Grimm / National Museum of Natural History / CC BY-SA 2.5. The "Big Five" mass extinctions of the Phanerozoic Eon have long attracted significant ...