Specifically, members of the Maclurites family fossilized in the Middle-Upper Ordovician Valcour formation (c. 460 mya) that was once the tidal shoreline of proto-North-America.

Mais il n'y a rien là pour la Science. Editor, New York Review of Wasps.
Specifically, members of the Maclurites family fossilized in the Middle-Upper Ordovician Valcour formation (c. 460 mya) that was once the tidal shoreline of proto-North-America.