eurypteridn.
/jʊəˈrɪptərɪd/ Palaeontology.
One of a group of fossil Crustacea, abundant in the Silurian and Devonian periods, some of which attained a large size. The name is due to a pair of broad swimming appendages, the hindmost of a series attached to the cephalo-thorax.
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the world > animals > invertebrates > phylum Arthropoda > class Crustacea > [noun] > miscellaneous types > fossil > eurypterid
eurypterid1871
1871 G. Hartwig Subterranean World ii. 125 Contemporaneous with the Trilobites were the Eurypterids, which vary from one foot to five or six feet in length.
1873 J. W. Dawson Story Earth & Man iv. 71 Eurypterids..with powerful limbs, long flexible bodies, and great eyes in the front of the head.
This entry has not yet been fully updated (first published 1891; most recently modified version published online June 2018).
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n.1871