Pseudodiloma Cossmann, 1888

Harzhauser, Mathias, 2021, The Cainozoic to present-day record of Circum-Mediterranean, NE Atlantic and North Sea Cantharidinae and Trochinae (Trochoidea, Gastropoda) - a synopsis, Zootaxa 4902 (1), pp. 1-81 : 52

publication ID	https://doi.org/10.11646/zootaxa.4902.1.1
publication LSID	lsid:zoobank.org:pub:4019A40A-8F24-4B05-8615-B0E693017C77
DOI	https://doi.org/10.5281/zenodo.4439874
persistent identifier	https://treatment.plazi.org/id/02388C29-FF9A-AE3C-FF14-8773E10CFCDF
treatment provided by	Plazi (2021-01-05 09:12:20, last updated 2024-11-25 21:37:13)
scientific name	Pseudodiloma Cossmann, 1888
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Genus Pseudodiloma Cossmann, 1888 †

Type species. Trochus mirabilis Deshayes, 1863 View in CoL , OD ( Cossmann 1888: 69), Eocene, France.

Diagnosis. Small, sigaretiform shells with convex teleoconch whorls with periphery in abapical third of whorls. Umbilicus wide, partly hidden by inner lip, with broad umbilical atrium. Sculpture of tiny beads arranged in Fibonacci sequences (see Cossmann 1918 for a detailed description).

Remarks. A monospecific genus, which is well defined by its peculiar sculpture; restricted to the middle Eocene of the NE Atlantic.

References

Cossmann, M. (1888) Catalogue illustre des coquilles fossiles de 1 ' Eocene des environs de Paris. Annales de la Societe Royale Malacologique de Belgique, 23, 3 - 324. [https: // www. biodiversitylibrary. org / item / 28336 # page / 33 / mode / 1 up]

Cossmann, M. (1918) Essais de paleoconchologie comparee. Onzieme livraison. published by the author, Paris, 388 pp. [https: // www. biodiversitylibrary. org / item / 111979]

Deshayes, G. P. (1863) Description des animaux sans vertebres decouverts dans le bassin de Paris pour servir de supplement a la Description des coquilles fossiles des environs de Paris comprenant une revue generale de toutes les especes actuellement connues. Tome 2. Mollusques acephales monomyaires et Brachiopodes. Mollusques cephales. J. - B. Bailliere et fils, Paris, pp. 641 - 920. https: // www. biodiversitylibrary. org / item / 110230 # page / 9 / mode / 1 up