Pentremites

Pentremites

▪ genus of echinoderm
      extinct genus of stemmed, immobile echinoderms (forms related to the starfish) abundant as marine fossils in rocks of the Carboniferous Period (from 359 million to 299 million years ago), especially those in the midcontinent region of North America. The genus is mainly restricted to the Early Carboniferous Period (359 million to 318 million years ago); more than 80 species are known. Specimens are frequently well preserved, allowing detailed anatomical and evolutionary studies.

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  • Pentremites — Pen tre*mi tes, n. [NL., from Gr. ? five + L. remus an oar.] (Zo[ o]l.) A genus of crinoids belonging to the Blastoidea. They have five petal like ambulacra. [1913 Webster] …   The Collaborative International Dictionary of English

  • Pentremites — Pentremites, so v.w. Pentatremites …   Pierer's Universal-Lexikon

  • Pentremītes — Pentremītes, s. Haarsterne, S. 581 …   Meyers Großes Konversations-Lexikon

  • Pentremites — Taxobox name = Pentremites fossil range = early Carboniferous image caption = regnum = Animalia phylum = Echinodermata subphylum = Blastozoa classis = Blastoidea ordo=Spiraculata genus= Pentremites genus authority = subdivision ranks = Species… …   Wikipedia

  • pentremites — pen·tre·mi·tes …   English syllables

  • pentremites — ˌpen.trəˈmīˌtēz noun Usage: capitalized Etymology: New Latin, from penta (from Greek) + Greek trēma hole + New Latin ites more at throw : a genus (the type of the family Pentremitidae) comprising Mississippian bla …   Useful english dictionary

  • pentremitid — I. | ̷ ̷ ̷ ̷|mid.ə̇d adjective Etymology: New Latin Pentremitidae, family of echinoderms, from Pentremites, type genus + idae : of or relating to the genus Pentremites or the family Pentremitidae II. noun ( s) Etymology …   Useful english dictionary

  • Blastoidea — Blas*toid e*a, n. pl. [NL., fr. Gr. blasto s sprout + oid.] (Zo[ o]l.) One of the divisions of Crinoidea found fossil in paleozoic rocks; pentremites. They are so named on account of their budlike form. [1913 Webster] …   The Collaborative International Dictionary of English

  • Pentremite — Pen tre*mite, n. (Zo[ o]l.) Any species of Pentremites. [1913 Webster] …   The Collaborative International Dictionary of English

  • Blastoid — Taxobox name = Blastoids fossil range = Ordovician Permian image caption = Blastoid fossils ( thecae ) attached to matrix. regnum = Animalia phylum = Echinodermata subphylum = Blastozoa classis = Blastoidea classis authority = Say, 1825… …   Wikipedia

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