Pseudoteloceras, a new stephanoceratid genus (Ammonitida) of the lower Humphriesianum Zone (lower Bajocian, Middle Jurassic) from western Tethys

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dc.contributor.authorPavia, Giulio
dc.contributor.authorFernández López, Sixto Rafael
dc.date.accessioned2023-06-18T05:58:37Z
dc.date.available2023-06-18T05:58:37Z
dc.date.issued2016-05
dc.description.abstractThe new dimorphic genus Pseudoteloceras (type-species: P. crosillense gen. et sp. nov.) is defined within the subfamily Stephanoceratinae. It constitutes the terminal step of an early Bajocian phyletic trend that produces Teloceras-like morphologies throughout the lower Humphriesianum Zone of the western Mediterranean-Caucasian Subrealm, at an older chronological interval and with morpho-structural features that stand apart from those of the best known genus Teloceras of the uppermost Humphriesianum and lower Niortense zones at the early/late Bajocian transition. Three new species are described: P. croisillense, P. maerteni and P. boursicoti. Their biochronostratigraphical ranges are confirmed by the distribution in expanded sections of the Subalpine Basin in Submediterranean Province (Digne area) and the taphonomic analysis of fossil assemblages from the condensed sections of the “Oolithe ferrugineuse de Bayeux” Formation in Calvados, North West European Province. The biochronostratigraphical range of Pseudoteloceras gen. nov. is limited to the Romani Subzone, lower Humphriesianum Zone. P. crosillense gen. et sp. nov. marks a well-defined biohorizon of the upper Romani Subzone in the Digne stratigraphical successions. The extreme degree of the cadiconic morphology in the inner whorls of P. boursicoti gen. et sp. nov., and the biostratigraphical gap separating the first appearance of the genus Teloceras in the upper Humphriesianum Zone, support its erection as a new taxon Pseudoteloceras gen. nov. A fourth species, Pseudoteloceras geometricum (Maubeuge), is interpreted as the earliest species of this phyletic lineage, derived from Stemmatoceras and widely distributed through western Tethys in the lower Humphriesianum Zone.
dc.description.departmentDepto. de Geodinámica, Estratigrafía y Paleontología
dc.description.facultyFac. de Ciencias Geológicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Ciencia e Innovación (MICINN)
dc.description.statuspub
dc.eprint.idhttps://eprints.ucm.es/id/eprint/57853
dc.identifier.doi10.1016/j.pgeola.2015.12.006
dc.identifier.issn0016-7878
dc.identifier.officialurlhttps://www.sciencedirect.com/journal/proceedings-of-the-geologists-association/vol/127/issue/2
dc.identifier.relatedurlhttp://www.elsevier. com/locate/pgeola
dc.identifier.urihttps://hdl.handle.net/20.500.14352/23685
dc.issue.number2
dc.journal.titleProceedings of the Geologists Association
dc.language.isoeng
dc.page.final209
dc.page.initial196
dc.publisherElsevier
dc.relation.projectIDCGL2011-23947
dc.rights.accessRightsopen access
dc.subject.cdu56
dc.subject.keywordAmmonites
dc.subject.keywordStephanoceratidae
dc.subject.keywordHumphriesianum Zone
dc.subject.keywordRomani Subzone
dc.subject.keywordMediterranean-Caucasian Subrealm
dc.subject.keywordWestern Tethys
dc.subject.ucmPaleontología
dc.subject.unesco2416 Paleontología
dc.titlePseudoteloceras, a new stephanoceratid genus (Ammonitida) of the lower Humphriesianum Zone (lower Bajocian, Middle Jurassic) from western Tethys
dc.typejournal article
dc.volume.number127
dspace.entity.typePublication
relation.isAuthorOfPublicationa4e51a4c-0e3a-450f-8a56-4d404fb59919
relation.isAuthorOfPublication.latestForDiscoverya4e51a4c-0e3a-450f-8a56-4d404fb59919
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