Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • proper n. A taxonomic class within the subphylum Chelicerata — extinct arthropods.

Etymologies

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Examples

  • Trilobita and Eurypterida, among the Crustacea; making altogether five for the great sub-kingdom of Annulosa.

    Essays

  • This paper, with Hünicken as a coauthor, revises the identity of this fossil as a “bizarre eurypterid”, a water scorpion Eurypterida.

    Archive 2006-02-01

  • Amongst the molluscous animals we have members of the very highest known class, namely, the Cephalopods, or cuttle-fish class; and amongst articulated animals we find Trilobites and Eurypterida, which do not belong to any incipient worm-like group, but are distinctly differentiated

    On the Genesis of Species

  • But a complete development, such as already obtains in the lobster, &c., was reached by the Eurypterida and Trilobites of the palæozoic strata; and annelids, probably formed mainly like those of the present day, abounded during the deposition of the oldest fossiliferous rocks.

    On the Genesis of Species

  • Eurypterida, among the Crustacea; making altogether five for the great sub-kingdom of Annulosa.

    Lectures and Essays

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