A Terrestrial Gastropod Community from the Early Pliocene (Neogene) of Mendoza, Argentina, with Description of a New Species of<i>Radiodiscus</i>Pilsbry and Ferriss, 1906 (Mollusca: Pulmonata: Charopidae)

Turazzini, Guillermo F.; Miquel, Sergio Eduardo

doi:10.5710/amgh.23.06.2014.2724

Cited by 7 publications

(5 citation statements)

References 29 publications

(13 reference statements)

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“…Thus, its presence in the Lower Pliocene of northern Mendoza would indicate a much warmer and less dry climate than today, with annual mean temperatures 8-9°C higher and annual mean precipitation at least 300 mm higher and highly seasonal. Similar arid to semiarid conditions with episodes of flooding (possibly caused by seasonal precipitation) was proposed for the coeval La Huertita formation (Turazzini & Miquel, 2014), which outcrops ∼100 km to the south of the Huayquerias del Este. Coupling this with the interpretation that the Tunuyan Fm was deposited under more arid conditions than the Huayquerías Fm (Chiesa et al, 2019), we can start to elucidate a trend from the Late Miocene onwards, of decreasing temperatures and increasing aridity.…”

Section: Discussionsupporting

confidence: 69%

A new old Budgett frog: an articulated skeleton of an Early Pliocene Lepidobatrachus (Anura, Ceratophryidae) from western Argentina

Turazzini

Gómez

2022

Journal of Vertebrate Paleontology

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The South American horned frogs or ‘escuerzos’ (Ceratophryidae) are among the best-known neobatrachians and comprise the genera Chacophrys, Ceratophrys, and Lepidobatrachus. Their relatively rich fossil record, which dates back to the Late Miocene and is largely concentrated in the Argentinean Pampas, consists mostly of variably complete cranial remains and comparatively few, mainly isolated, postcranial bones of Ceratophrys, whereas only three specimens of Lepidobatrachus are known. Here we describe two extra-Pampean ceratophryid records from the Upper Miocene–Lower Pliocene of Huayquerías del Este, Mendoza Province, Argentina, including Lepidobatrachus dibumartinez sp. nov. based on a well-preserved articulated skeleton. The new species is part of the stem of Lepidobatrachus and is diagnosed on the basis of several cranial and postcranial traits, including a large kite-shaped dorsal dermal shield. The new taxon sheds light on the evolution of a dorsal shield in the group, as well as on their paleobiogeographic history, adding support to the hypothesis of a broader ancestral distribution of Lepidobatrachus, whose diversification might have been triggered by the Late Miocene marine introgression of the Paranaense Sea. Also, it indicates that the prevalent climatic conditions during the Early Pliocene in western Argentina were much warmer and less dry than today. Finally, we discuss the potential value of the new records in calibrating the time-tree of Ceratophryidae.

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Section: Discussionsupporting

confidence: 69%

A new old Budgett frog: an articulated skeleton of an Early Pliocene Lepidobatrachus (Anura, Ceratophryidae) from western Argentina

Turazzini

Gómez

2022

Journal of Vertebrate Paleontology

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“…Most fossil records are from the Southern Hemisphere. These records are mostly from South America [88][89][90][91][92][93][94][95][96], where the family is first recorded from the Eocene [88][89][90] and has also been found in Oligocene, Miocene and Pliocene deposits. Charopidae is also known from the Miocene and later of New Zealand [97] and from the Miocene in islands in the Pacific Ocean [98].…”

Section: Discussionmentioning

confidence: 99%

The Phylogenetic Relationships of Australian Species within Charopidae (Gastropoda: Punctoidea)

Colgan,

Stanisic

2023

Diversity

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Charopidae is a highly speciose family of land snails mostly distributed in the main landmasses and archipelagos of the Southern Hemisphere, with a few genera in the Northern Hemisphere. DNA sequencing is making substantial contributions to understanding the phylogeography of Charopidae and the systematic relationships of its subfamilies and related families in the Punctoidea. Here, new data from 28S rRNA are combined with available GenBank sequences to investigate whether Australian Charopidae comprise a single clade, exclusive of species from other regions. Phylogenetic analyses show that this is not the case, with most species from Australia and other regions included in a bootstrap-supported clade that excludes some Australian species. Analyses of concatenated 28S rRNA data and available cytochrome c oxidase subunit I (COI) also contradicted monophyly of Australian species, as did analyses of inferred COI protein sequences. In DNA analyses, the genus Hirasea and Australian taxa with an incomplete secondary ureter were basal within Charopidae. We also examined whether known doubts about the taxonomic status of supra-generic clades in Punctoidea could be resolved by considering autapomorphic COI amino acid changes. Such variation could not generally be applied as an objective criterion for taxonomic categorization but did identify some clades for taxonomic investigation.

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“…The new species described herein is the oldest record of Gastrocopta from Argentina. The genus had been previously recorded from the Pliocene of Mendoza (Turazzini and Miquel, 2013, 2014) and the Holocene of Entre Ríos (Miquel and Aguirre, 2011). Miocene–Recent.…”

Section: Systematic Paleontologymentioning

confidence: 99%

“…Gastrocopta sp. was recently described from the Early Pliocene of Mendoza (Turazzini and Miquel, 2014), but cannot be assigned to a species because of the erosional loss of apertural teeth which are of prime taxonomic importance in these vertiginids. Gastrocopta patagonica n. sp.…”

Section: Systematic Paleontologymentioning

confidence: 99%

A novel late Early Miocene assemblage of terrestrial gastropods from Santa Cruz (Patagonia, Argentina)

Miquel

Rodríguez

2015

J. Paleontol.

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A remarkable fossil assemblage composed of five gastropod taxa is described from the Early Miocene of Santa Cruz (Patagonia, Argentina) in southernmost South America. The assemblage includes extinct and living genera South America, and on geographic distributions and represent background new information on spatial and across time distributions as well as identification of new taxa. A new taxon,Patagocharopa enigmatican. gen. n. sp., is tentatively assigned to Charopidae.Gastrocopta patagonican. sp. (Vertiginidae) represents the oldest record ofGastrocoptain Argentina and the southernmost record for the Americas.Punctum patagonicumn. sp. (Punctidae) represents the first record ofPunctumfor continental South America, and characterized by a protoconch with traces of axial costulae and a teleoconch with strong radial ribs.Zilchogyra miocenican. sp. is the first Miocene record of the charopid genusZilchogyra. Fragments of a possibleScolodonta(Scolodontidae) are recorded. Overall, the assemblage represents an important and useful paleoenvironmental tool. This fauna suggests that a more temperate and humid environment than today—with a more dense vegetation cover—was prevalent at this site during the Early Miocene.

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A Terrestrial Gastropod Community from the Early Pliocene (Neogene) of Mendoza, Argentina, with Description of a New Species ofRadiodiscusPilsbry and Ferriss, 1906 (Mollusca: Pulmonata: Charopidae)

Cited by 7 publications

References 29 publications

A new old Budgett frog: an articulated skeleton of an Early Pliocene Lepidobatrachus (Anura, Ceratophryidae) from western Argentina

A new old Budgett frog: an articulated skeleton of an Early Pliocene Lepidobatrachus (Anura, Ceratophryidae) from western Argentina

The Phylogenetic Relationships of Australian Species within Charopidae (Gastropoda: Punctoidea)

A novel late Early Miocene assemblage of terrestrial gastropods from Santa Cruz (Patagonia, Argentina)

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