eurypterid

American  

[yoo-rip-tuh-rid, yuh-] / yʊˈrɪp tə rɪd, yə- /

noun

1. any aquatic arthropod of the extinct order Eurypterida, from the Paleozoic Era, closely related to trilobites and scorpions.

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eurypterid British  

/ jʊˈrɪptərɪd /

noun

1. any large extinct scorpion-like aquatic arthropod of the group Eurypterida, of Palaeozoic times, thought to be related to the horseshoe crabs

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Etymology

Origin of eurypterid

From the New Latin word Eurypteridae, dating back to 1870–75. See eury-, -pterous, -id ²

Example Sentences

S. acuminata, which grew up to 40 centimeters long, belonged to a diverse group of predators known as eurypterids, whose oldest known species appeared about 467 million years ago.

From Science Magazine

Others are strangers to most of us: eurypterid, uintathere, onychophoran.

From Washington Times

Analyses show that 59% of the chitin-protein complex from the ancient scorpion's exoskeleton, and 53% of that from the eurypterid's, was preserved in those thin veneers, the researchers reported online 3 February in .

From Science Magazine

It is the largest known walking trackway of a eurypterid or any invertebrate animal.

From BBC

It is in the Old Red Sandstone that the eurypterids are best preserved; foremost among these was Pterygotus; P. anglicus has been found in Scotland with a length of nearly 6 ft.;

From Project Gutenberg