Pygidia
Pygidium Py*gid"i*um, n.; pl. {Pygidia}. [NL., fr. Gr. ?, dim. of ? the rump.] (Zo["o]l.) The caudal plate of trilobites, crustacean, and certain insects. See Illust. of {Limulus} and {Trilobite}. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • pygidia — n. (Zoology) posterior segment or caudal part of the body in some invertebrates …   English contemporary dictionary

  • Pygidium — Py*gid i*um, n.; pl. {Pygidia}. [NL., fr. Gr. ?, dim. of ? the rump.] (Zo[ o]l.) The caudal plate of trilobites, crustacean, and certain insects. See Illust. of {Limulus} and {Trilobite}. [1913 Webster] …   The Collaborative International Dictionary of English

  • pygidium — noun (plural pygidia) Etymology: New Latin, from Greek pygidion, diminutive of pygē rump Date: circa 1849 a caudal structure or the terminal body region of various invertebrates • pygidial adjective …   New Collegiate Dictionary

  • Agnostida — Taxobox name = Agnostida fossil range = Early Cambrian – Late Ordovician image width = 300px image caption = Peronopsis interstrictus image2 caption = Agnostus pisiformis regnum = Animalia phylum = Arthropoda classis = Trilobita ordo = Agnostida… …   Wikipedia

  • Harpetida — Taxobox name = Harpetida image width = 240px image caption = A Harpetida trilobite from Morocco. regnum = Animalia phylum = Arthropoda classis = Trilobita subclassis = Librostoma ordo = Harpetida subdivision ranks = Families subdivision =… …   Wikipedia

  • Ptychopariida — Taxobox name = Ptychopariida image width = 230px image caption = Elrathia kingi regnum = Animalia phylum = Arthropoda classis = Trilobita subclassis = Librostoma ordo = Ptychopariida ordo authority = Swinnerton, 1915 subdivision ranks = Suborders …   Wikipedia

  • Corynexochida — Holyoakia simpsoni, from Southern Australia. Scientific classification Kingdom: Animalia Phylum …   Wikipedia

  • Lichida — Taxobox name = Lichida image caption = Terataspis grandis status = Fossil regnum = Animalia phylum = Arthropoda classis = Trilobita ordo = Lichida ordo authority = Moore, 1959 subdivision ranks = Superfamilies subdivision = *Superfamily… …   Wikipedia

  • Cheiruridae — Temporal range: Ordovician–Devonian …   Wikipedia

  • Ceraurus — Temporal range: Middle to Upper Ordovician Conservation status Fossil Scientific classification Kingdom: Animalia …   Wikipedia

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