24 Nov 2014 USNM Number PAL23694 Published Name Pterygotus (Acutiramus) macrophthalmus var. macrophthalmus Hall See more items in Paleogeneral Arthropoda Arthropoda Eurypterida Biologic Paleobiology ...
Roughly 400 million years ago, scorpions the size of small alligators roamed our oceans. With their powerful claws and thick exoskeletons, these 2.5m-long predators dominated their world. Until ...
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