NDLI: Europrotomus (Mollusca: Caenogastropoda: Strombidae): a new Middle Miocene European strombid genus (Revision of Euprotomus Gill, 1870. Part 4)

Content Provider	Springer Nature Link
Author	Kronenberg, Gijs C. Harzhauser, Mathias
Copyright Year	2011
Abstract	The medium-sized, strongly ornamented nominal species Strombus schroeckingeri Hörnes in Hoernes & Auinger, 1884 is well known from Langhian deposits of the Paratethys Sea. Its traditional generic affiliation in the literature with Euprotomus Gill, 1870, implicated a biogeographic relation of the Paratethys and the proto-Mediterranean with the Neogene Indo-West-Pacific region. This relation, however, is problematic because the Tethys Seaway was already closed or a very shallow, strongly evaporitic passage at that time. Despite its superficial similarity with extant genera of the IWP region, the genus is unrelated to all known strombid genera and represents a new genus, which is introduced herein as Europrotomus nov. gen. The genus comprises only one or maybe two species, which occur in the European Middle Miocene geological record. No ancestors are known so far. This sudden occurrence is discussed as immigration from an adjacent bioprovince rather than as a result of autochthonous evolution. Hypothetically, such a biogeographic source area might have been established along the coasts of tropical West Africa—a scenario that is already documented for Pleistocene times.Die nominale Art Strombus schroeckingeri Hörnes in Hoernes & Auinger, 1884 ist ein stark ornamentierter Strombidae von mittlerer Größe, der aus dem Langhium der Paratethys gut dokumentiert ist. Die traditionelle generische Zuordnung zu Euprotomus Gill, 1870 implizierte eine biogeographische Beziehung zwischen der Paratethys und dem Proto-Mediterran sowie der neogenen Indo-West-Pazifischen Region. Diese Verbindung ist jedoch problematisch, da der Tethys-Seeweg zu dieser Zeit bereits geschlossen war oder nur eine sehr seichte, stark evaproritische Passage repräsentierte. Die Gattung zeigt keine nähere Verwandtschaft mit den bekannten Strombiden-Gattungen, trotz der oberflächlichen Ähnlichkeiten mit einigen modernen Vertretern in der IWP-Region. Daher wird hier für dieses Taxon Europrotomus nov. gen. als neue Gattung eingeführt. Diese Gattung beinhaltet nur ein oder zwei Arten, die ausschließlich aus dem europäischen Mittel-Miozän bekannt sind. Bisher konnten keine Vorgänger nachgewiesen werden, weshalb autochthone Evolution als eher unwahrscheinlich betrachtet wird. Stattdessen könnte dieses plötzliche Auftreten durch Immigration von einer benachbarten biogeographischen Provinz erklärt werden. Ein derartiges biogeograpohisches Herkunftsgebiet könnte hypothetisch entlang der tropischen Küsten West-Afrikas etabliert gewesen sein—ein Szenario, das auch aus dem Pleistozän dokumentiert ist.
Starting Page	147
Ending Page	159
Page Count	13
File Format	PDF
ISSN	00310220
Journal	Paläontologische Zeitschrift
Volume Number	86
Issue Number	2
e-ISSN	18676812
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-10-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Gastropoda Strombidae Euprotomus neue Gattung Miozän Biogeographie Paratethys Paleontology
Content Type	Text
Resource Type	Article
Subject	Paleontology

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Europrotomus (Mollusca: Caenogastropoda: Strombidae): a new Middle Miocene European strombid genus (Revision of Euprotomus Gill, 1870. Part 4)