Svalbardocreas skua Kröger & Pohle 2021, gen. et sp. nov. ...
Svalbardocreas skua gen. et sp. nov. urn:lsid:zoobank.org:act: 9385D872-8656-4B53-9CA8-05F7575BEB6F Figs 16B, 19C, 20–21, 22A–D, 23B, D, F Diagnosis Slightly curved longicones with circular conch cross section; shell ornamented with shallow, irregularly spaced undulations that are more pronounced in...
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Zenodo
2021
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| Online Access: | https://dx.doi.org/10.5281/zenodo.5793504 https://zenodo.org/doi/10.5281/zenodo.5793504 |
| Summary: | Svalbardocreas skua gen. et sp. nov. urn:lsid:zoobank.org:act: 9385D872-8656-4B53-9CA8-05F7575BEB6F Figs 16B, 19C, 20–21, 22A–D, 23B, D, F Diagnosis Slightly curved longicones with circular conch cross section; shell ornamented with shallow, irregularly spaced undulations that are more pronounced in later growth stages and with fine, irregularly spaced, directly transverse growth lines or bands; thin, nearly marginal siphuncle with relative siphuncle diameter of ca 0.16 of corresponding conch cross section, siphuncle positioned at concave side of conch curvature; septal necks orthochoanitic; connecting ring relatively thick with slightly concave segments, weak hyposeptal and episeptal deposits occur. Etymology Referring to Stercorarius skua (Brünnich, 1764), a bird which was a common companion during our field work at Profilstranda, Ny Friesland. Type material Holotype Specimen FMNH-P30272. Paratypes Nine specimens from type locality, one from bed PO 123 (FMNH-P30271), eight from bed PO 123.3 (FMNH-P30263, ... : Published as part of Kröger, Björn & Pohle, Alexander, 2021, Early-Middle Ordovician cephalopods from Ny Friesland, Spitsbergen - a pelagic fauna with Laurentian affinities, pp. 1-102 in European Journal of Taxonomy 783 (1) on pages 32-33, DOI: 10.5852/ejt.2021.783.1601, http://zenodo.org/record/5793422 ... |
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