Stevensites, Zittelites, and Gyrophylloceras, New Generic Names Proposed for Stevensia Énay, 2009, Zittelia Tavera Benitez, 1985, and Gyrophyllites Wiedmann, 1963 (Mollusca: Ammonoidea)

Raymond Énay; Michael K. Howarth

doi:10.17161/1808.26312

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19 April 2018 Stevensites, Zittelites, and Gyrophylloceras, New Generic Names Proposed for Stevensia Énay, 2009, Zittelia Tavera Benitez, 1985, and Gyrophyllites Wiedmann, 1963 (Mollusca: Ammonoidea)

Raymond Énay, Michael K. Howarth

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Paleontological Contributions, 2018(19):1-2 (2018). https://doi.org/10.17161/1808.26312

Abstract

Stevensites, Zittelites, and Gyrophylloceras are proposed as replacement names for the preoccupied ammonite genera Stevensia Énay, 2009, Zittelia Tavera Benitez, 1985, and Gyrophyllites Wiedmann, 1963, respectively.

On the occasion of the revision of the Jurassic ammonite volume of the Treatise on Invertebrate Paleontology currently in progress, the generic names Stevensia Énay, Zittelia Tavera Benitez, and Gyrophyllites Wiedmann were found to be preoccupied.

The genus Stevensia Énay, 2009, p. 144, was proposed for a group of Upper Jurassic ammonites from the Himalaya of central Nepal, and Kossmatia desmidopthycha Uhlig, 1910, p. 277, was originally designated as type species. It is preoccupied by Stevensia Cameron, 1932, p. 309, an insect (Coleoptera: Staphylinidae). To remove this primary homonym, Stevensites Énay gen. nov. is proposed herein as a replacement name, with Kossmatia desmidopthycha Uhlig, 1910, as type species.

The genus Zittelia Tavera Benitez, 1985, p. 114, was proposed for a group of Upper Jurassic ammonites from southern Spain, and the type species originally designated was Ammonites eudichotomus Zittel, 1868, p. 112. It is preoccupied by Zittelia Gemmellaro, 1869, p. 258, a mollusc (Gastropoda). To remove this primary homonym, Zittelites Énay gen. nov. is proposed herein as a replacement name with Ammonites eudichotomus Zittel, 1868, p. 112 “normalform,” as type species.

The genus Gyrophyllites Wiedmann, 1963, p. 260, proposed for a group of Lower Cretaceous ammonites, with type species Phylloceras lateumbilicatum Pervinquière, 1907, p. 60, originally designated, is a junior homonym of Gyrophyllites Glocher, 1841, p. 322. Glocher's genus is an ichnotaxon (a trace fossil), an available genus-group name (ICZN, International Code of Zoological Nomenclature, 1999, p. 47, Article 42.2.1), which is widely used at the present time (e.g. Strzebonski & Uchman, 2015; Bayet-Goll & others, 2016). Accordingly, Phylloceras (Gyrophylloceras) Howarth new subgenus is proposed herein, with type species Phylloceras lateumbilicatum Pervinquière, 1907, p.60.

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Raymond Énay and Michael K. Howarth "Stevensites, Zittelites, and Gyrophylloceras, New Generic Names Proposed for Stevensia Énay, 2009, Zittelia Tavera Benitez, 1985, and Gyrophyllites Wiedmann, 1963 (Mollusca: Ammonoidea)," Paleontological Contributions 2018(19), 1-2, (19 April 2018). https://doi.org/10.17161/1808.26312

Published: 19 April 2018

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