Carstenicrinus Roux & Eléaume & Améziane 2019, n. gen.
Authors/Creators
Description
Genus Carstenicrinus n. gen.
Type species. Apiocrinus constrictus von Hagenow, in Quenstedt, 1876
Etymology. Genus dedicated to Carsten R. Kjaer (University of Aarhus), who provided Late Cretaceous and Danian crinoids from Denmark.
Diagnosis. Theca with proximale usually substantially taller than basals; distal face of aboral cup of Pseudoconocrinus - type (see below) without interradial process or thorn, large subtrapezoidal arm insertion on cup as wide as radials, brachial axillary at IBr2, articulation IBr1+2 without visible trifascial pattern. Campanian- Paleocene.
Included species. Apiocrinus constrictus von Hagenow, in Quenstedt, 1876 (= B. bruennichinielseni Ødum, in Jessen & Ødum, 1923 = Bourgueticrinus tenuis Rasmussen, 1961), Campanian-Maastrichtian; Bourgueticrinus baculatus Klikushin, 1982, lower Campanian; B. danicus Brünnich Nielsen, 1913, Danian.
Remarks. According to Kjaer & Thomsen (1999), B. bruennichinielseni corresponds to a thecal architecture that is intermediate between B. constrictus and B. danicus. Distinction between species is difficult using only external morphology, because of the wide range of variation in the relative height of thecal ossicles, as in Bourgueticrinus.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- Roux & Eléaume & Améziane
- Kingdom
- Animalia
- Phylum
- Echinodermata
- Order
- Comatulida
- Family
- Bathycrinidae
- Genus
- Carstenicrinus
- Taxon rank
- genus
- Taxonomic status
- gen. nov.
- Taxonomic concept label
- Carstenicrinus Roux, Eléaume & Améziane, 2019
References
- Quenstedt, F. A. (1876) Petrefaktenkunde Deutschlands. In: Echinodermen, Asteriden und Encriniden. 1 (4). L. F. Fues, Leipzig, 742 pp.
- Jessen, A. & Odum, H. (1923) Senon og Danien ved Voxlev. Danmarks Geologiske UndersOgelse, II, Raekke 39, 1 - 73.
- Rasmussen, H. W. (1961) A monograph on the Cretaceous Crinoidea. Kongelige Danske Videnskabernes Selskab, Biologiske Skrifter, 12 (1), 1 - 428.
- Klikushin, V. G. (1982) Cretaceous and Paleogene Bourgueticrinina (Echinodermata, Crinoidea) of the USSR. Geobios, 15 (6), 811 - 843. https: // doi. org / 10.1016 / S 0016 - 6995 (82) 80034 - X
- Nielsen, K. B. (1913) Crinoiderne i Danmarks Kridtaflejringer. Danmarks Geologiske UndersOgelser, Series 2, 26, 1 - 120.
- Kjaer, C. R. & Thomsen, E. (1999) Heterochrony in bourgueticrinid sea-lilies at the Cretaceous / Tertiary boundary. Paleobiology, 25 (1), 29 - 40.