pentacriniten.
/pɛnˈtakrᵻnʌɪt/, U.S. /pɛnˈtækrəˌnaɪt/ Palaeontology. Now rare.
A fossil crinoid of the genus Pentacrinus or family Pentacrinitidae, having a five-sided stalk and a calyx consisting of five plates, and known from remains of the Jurassic period.
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the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > division Pelmatozoa > class Crinoidea > fossil or encrinite > family Pentacrinidae > member of
Medusa's head1754
pentacrinite1816
sea-palm1896
1816 W. Phillips Outl. Mineral. & Geol. (ed. 2) 123 Petrifactions of marine animals, as corallites, enchrinites, pentacrinites, entrochites and trochites.
1854 F. C. Bakewell Geol. vii. 49 Another fossil abundant in the lias is the pentacrinite.
1908 Amer. Naturalist 42 721 While the recent pentacrinites as a rule live below 100 fathoms, in certain places, such as in some localities along the northern coasts of Cuba and Guadeloupe, and in Suruga Gulf and Sagami Bay, Japan, they approach much nearer the surface.
1973 Philos. Trans. (Royal Soc.) A. 274 607 Ophiuroid and pentacrinite ossicles together with ammonite nuclei and fragments of Ostrea and Oxytoma were found in both lithologies.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).
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