Work

Porphyrocrinus Gislen 1925

Year: 2025

Type: other

Abstract: Genus Porphyrocrinus Gislén, 1925 Type species of the genus: Porphyrocrinus verrucosus Gislén, 1925. Stratigraphical distribution: late Miocene–Recent. Emended diagnosis: Crown usually of five rays, exceptionally up to 17 rays; arms usually undivided or with axillaries beyond IBr7, arm pattern of consecutive brachial pairs (rarely triplets) or alternating brachial pairs and free brachials, trifascial ligamentary articulation uniting two brachials of a pair, usually Br7 to 9 bearing first pinnule; aboral cup at least slightly conical, usually taller than wide, basals conspicuous never fused, usually pentagonal; proxistele well-differentiated with very variable number of discoidal columnals frequently united by syzygies of pentalobate facets; mesistele columnals of synarthries moderately oval, variable number of cryptosynarthries or ankylosed synarthries in distal mesistele or dististele.

Source: Zenodo (CERN European Organization for Nuclear Research)

DOI: 10.5281/zenodo.14804773

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: W6893194602

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