| 单词 | eurypterid |
| 例句 | 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. A killer tail spine likely helped this ancient sea scorpion subdue its prey 2017-04-18T04:00:00Z Others are strangers to most of us: eurypterid, uintathere, onychophoran. Coloring book inspired by Nebraska’s statehouse floor 2015-12-19T05:00:00Z It is the largest known walking trackway of a eurypterid or any invertebrate animal. 'Gigantic' scorpion fossil found 2010-04-20T23:48:00Z 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.; Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" The great eurypterids—some of which were five or six feet in length—and the cephalopods were still masters of the seas. The Elements of Geology |
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