The gastropod family aporrhaidae in the lower cretaceous of the Neuquén Basin, west-central Argentina
The gastropod fauna of the Lower Cretaceous of the Argentinian Neuquén Basin contains three aporrhaid species. Protohemichenopus neuquensis Camacho, 1953 is the most abundant, longest-lived, and most geographically widespread of the aporrhaids of this basin, and its protoconch and early teleoconch w...
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2014
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223360_v88_n6_p1222_Cataldo http://hdl.handle.net/20.500.12110/paper_00223360_v88_n6_p1222_Cataldo |
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paper:paper_00223360_v88_n6_p1222_Cataldo2023-06-08T14:49:49Z The gastropod family aporrhaidae in the lower cretaceous of the Neuquén Basin, west-central Argentina biological characteristics Cretaceous gastropod new species species diversity Argentina Argentina Neuquen Basin Aporrhaidae Gastropoda The gastropod fauna of the Lower Cretaceous of the Argentinian Neuquén Basin contains three aporrhaid species. Protohemichenopus neuquensis Camacho, 1953 is the most abundant, longest-lived, and most geographically widespread of the aporrhaids of this basin, and its protoconch and early teleoconch whorls were unknown until now. The new species Dimorphosoma weaveri features convex to subtly angular spire whorls with opisthocyrt collabral ribs that are more prominent towards the mid-whorl, a bicarinate last whorl with small rounded nodes on the adapical carina, a simple, falcate labral wing which is more or less rectangular proximally and tapering and curving towards its distal end, and a short, straight rostrum. Tylostoma jaworskii Weaver, 1931 is now placed in Harpagodes, and other previous, scattered, coeval records of this genus in the basin are now recognized as part of this single species. It is believed that whereas H. jaworskii preferred shallower-water carbonate settings of low to moderate energy, P. neuquensis and D. weaveri favored siliciclastic to mixed clastic-carbonate environments, in deeper waters. In spite of its endemic elements, this aporrhaid association depicts a predominantly Tethyan influence. Copyright © 2014, The Paleontological Society. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223360_v88_n6_p1222_Cataldo http://hdl.handle.net/20.500.12110/paper_00223360_v88_n6_p1222_Cataldo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
biological characteristics Cretaceous gastropod new species species diversity Argentina Argentina Neuquen Basin Aporrhaidae Gastropoda |
| spellingShingle |
biological characteristics Cretaceous gastropod new species species diversity Argentina Argentina Neuquen Basin Aporrhaidae Gastropoda The gastropod family aporrhaidae in the lower cretaceous of the Neuquén Basin, west-central Argentina |
| topic_facet |
biological characteristics Cretaceous gastropod new species species diversity Argentina Argentina Neuquen Basin Aporrhaidae Gastropoda |
| description |
The gastropod fauna of the Lower Cretaceous of the Argentinian Neuquén Basin contains three aporrhaid species. Protohemichenopus neuquensis Camacho, 1953 is the most abundant, longest-lived, and most geographically widespread of the aporrhaids of this basin, and its protoconch and early teleoconch whorls were unknown until now. The new species Dimorphosoma weaveri features convex to subtly angular spire whorls with opisthocyrt collabral ribs that are more prominent towards the mid-whorl, a bicarinate last whorl with small rounded nodes on the adapical carina, a simple, falcate labral wing which is more or less rectangular proximally and tapering and curving towards its distal end, and a short, straight rostrum. Tylostoma jaworskii Weaver, 1931 is now placed in Harpagodes, and other previous, scattered, coeval records of this genus in the basin are now recognized as part of this single species. It is believed that whereas H. jaworskii preferred shallower-water carbonate settings of low to moderate energy, P. neuquensis and D. weaveri favored siliciclastic to mixed clastic-carbonate environments, in deeper waters. In spite of its endemic elements, this aporrhaid association depicts a predominantly Tethyan influence. Copyright © 2014, The Paleontological Society. |
| title |
The gastropod family aporrhaidae in the lower cretaceous of the Neuquén Basin, west-central Argentina |
| title_short |
The gastropod family aporrhaidae in the lower cretaceous of the Neuquén Basin, west-central Argentina |
| title_full |
The gastropod family aporrhaidae in the lower cretaceous of the Neuquén Basin, west-central Argentina |
| title_fullStr |
The gastropod family aporrhaidae in the lower cretaceous of the Neuquén Basin, west-central Argentina |
| title_full_unstemmed |
The gastropod family aporrhaidae in the lower cretaceous of the Neuquén Basin, west-central Argentina |
| title_sort |
gastropod family aporrhaidae in the lower cretaceous of the neuquén basin, west-central argentina |
| publishDate |
2014 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00223360_v88_n6_p1222_Cataldo http://hdl.handle.net/20.500.12110/paper_00223360_v88_n6_p1222_Cataldo |
| _version_ |
1768543933369942016 |