WoRMS taxon details
Thalassocrinus AH Clark, 1911
marine, brackish, fresh, terrestrial
Clark, A. H. (1911). Thalassocrinus, a new genus of stalked crinoids from the East Indies. <em>Proceedings of the U.S. National Museum.</em> 39:473-476. [details]
Messing, C.; Gondim, A.I.; Markello, K.; Poatskievick Pierezan, B.; Taylor, K.; Eléaume, M. (2025). World List of Crinoidea. Thalassocrinus AH Clark, 1911. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=391353 on 2025-03-14
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Nomenclature
original description
Clark, A. H. (1911). Thalassocrinus, a new genus of stalked crinoids from the East Indies. <em>Proceedings of the U.S. National Museum.</em> 39:473-476. [details]
basis of record Hess H. (2011). Hyocrinida. <em>In: Hess H, Messing CG, Ausich WI (Eds.), Treatise on Invertebrate Paleontology, Part T, Echinodermata 2 Revised, Crinoidea, vol. 3. University of Kansas Press, Lawrence, Kansas.</em> 172–179. [details]
basis of record Hess H. (2011). Hyocrinida. <em>In: Hess H, Messing CG, Ausich WI (Eds.), Treatise on Invertebrate Paleontology, Part T, Echinodermata 2 Revised, Crinoidea, vol. 3. University of Kansas Press, Lawrence, Kansas.</em> 172–179. [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Diagnosis Hyocrinidae with basals 3 or fused. The most frequent proximal arm pattern with second nonmuscular articulation between brachials 4 and 5, third synostosis between brachials 6 and 7, no series of 3 or more brachials united by synostoses before brachial 10. (In middle part of arm of T. pontifer, muscular articulations regularly follow pair of brachials joined by synostosis). First pinnule on brachial 5; each pinnular with 2 to 2.5 pairs of cover plates. Well-developed oral and anal cones. Number of tegminal plates >10 in each interradius. Proximal columnals hexagonal or hexalobate, columnals of mesistele hexagonal. Symplexies with 6-7 crenular units of 1-3 crenulae each. [details]Unreviewed
Habitat Known from seamounts and knolls [details]
