Work

Hyocrinidae Carpenter 1884

Year: 2025

Type: other

Abstract: Family Hyocrinidae Carpenter, 1884 Fig. 6F Undetermined genus and species Material examined: a single small columnal (OPH212). Description: columnal of heptagonal facet with radiate crenulae poorly preserved (Fig. 6F), diameter 0.75 mm, height 0.50 mm. Remarks: Heptagonal shape, or 7 crenular units on articular facets, is a frequent condition in hyocrinid columnals (Mironov & Sorokina, 1998; Roux & Lambert, 2011) but unknown in other extant stalked crinoid families. Moreover, symmetry 6–7 is more common in juvenile stalks and tends to disappear during growth by adjunction of new crenular units and generalization of circular articular facets. The small size of this columnal suggests that it belongs to a juvenile specimen which cannot be attributed at the genus rank.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.14804789

Authors: Roux, Michel, Thuy, Ben, Gale, Andy S.

Institutions: Centre National de la Recherche Scientifique, École Pratique des Hautes Études, Institut de Systématique, Évolution, Biodiversité, Muséum national d'Histoire naturelle, Musée national d'histoire naturelle Luxembourg, Natural History Museum, University of Portsmouth

Language: English

Topic: Paleontology and Stratigraphy of Fossils

Subfield: Paleontology

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W6930694644

Cites:

Cited by:

Related to: