The fossil record and phylogeny of South American horned frogs (Anura, Ceratophryidae)

Gómez, Raúl O.; Turazzini, Guillermo F.

doi:10.1080/14772019.2021.1892845

Cited by 15 publications

(39 citation statements)

References 116 publications

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“…The overall proportions of the different parts resemble the tall maxillae of Ceratophrys, and are very similar to that of the new species Lepidobatrachus dibumartinez, although the poor preservation prevents further comparisons between them. Albeit not being identified at a generic level, IANIGLA-PV 104 evidences the presence of ceratophryid frogs in the region since the Late Miocene and expands the geographic range of the oldest records of the family, which have a wide distribution in central-western Argentina (Contreras & Acosta, 1998;Gómez & Turazzini, 2021;Nicoli, 2016Nicoli, , 2017Nicoli et al, 2017).…”

Section: Discussionmentioning

confidence: 98%

“…Additionally, it was proposed to represent a new taxon based on the conspicuous presence of a long depression along the pars facialis of the maxilla and the composition and shape of the dorsal shield, both unique features among ceratophryids (Turazzini, 2015). More recently, it was included in a comprehensive morphological phylogenetic analysis of Ceratophryidae, in which L. dibumartinez was consistently recovered as sister-group of crown-group Lepidobatrachus under all analytical conditions (Gómez & Turazzini, 2021) (Fig. 6).…”

Section: Discussionmentioning

confidence: 99%

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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: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

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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“…To our knowledge, this character has not been used in phylogenetic analyses ( e.g. , Gómez & Turazzini, 2021 ). However, the two extant taxa possessing these recesses are closely related ( Ceratophrys and Lepidobatrachus Budgett, 1899), and the extinct Beelzebufo has been proposed as a stem member of the Ceratophryidae ( Báez & Gómez, 2018 ; Lemierre et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

“…The anatomical terminology used herein is based on Roček (1981) , Sanchiz (1998) , and Biton et al (2016) for cranial features, Sanchiz (1998) for postcranial ones, Gómez & Turazzini (2021) for humerus anatomy, and Gómez & Turazzini (2016) for ilium anatomy. Anatomical terminology for cranial nerves follows Gaupp (1896) .…”

Section: Methodsmentioning

confidence: 99%

A new genus and species of frog from the Kem Kem (Morocco), the second neobatrachian from Cretaceous Africa

Lemierre

Blackburn

2022

PeerJ

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Neobatrachia, a clade representing the majority of extant anuran diversity, is thought to have emerged and diversified during the Cretaceous. Most of the early diversification of neobatrachians occurred in southern Gondwana, especially the regions that are today South America and Africa. Whereas five extinct neobatrachians have been described from the Cretaceous of South America in the last decade, only one is known from Africa. This difference in the known extinct diversity is linked to the lack of well-preserved specimens, understudy of fragmentary remains, and lack of known Cretaceous sites in Africa. Study of fragmentary anuran remains from Africa could allow for the identification of previously unknown neobatrachians, allowing for a better understanding of their early diversification. We reanalysed several previously described anuran specimens from the well-known Kem Kem beds, including using CT-scanning. Through our osteological study, we determined that several cranial bones and vertebrae represent a new hyperossified taxon for which we provide a formal description. Comparison to other hyperossified anurans revealed similarities and affinity of this new taxon with the neobatrachians Beelzebufo (extinct) and Ceratophrys (extant). Phylogenetic analyses supported this affinity, placing the new taxon within Neobatrachia in an unresolved clade of Ceratophryidae. This taxon is the oldest neobatrachian from Africa, and reveals that neobatrachians were already widespread throughout southern Gondwana during the earliest Late Cretaceous.

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“…The fossa does not extend on the diaphysis. The eminentia capitata (humeral ball in Gómez & Turazzini, 2021) is wide and large (Fig. 7C, D).…”

Section: Forelimbsmentioning

confidence: 99%

The oldest articulated ranid from Europe: a Pelophylax specimen from the lowest Oligocene of Chartres-de-Bretagne (N.W. France)

Lemierre¹,

Gendry

Poirier

et al. 2022

Journal of Vertebrate Paleontology

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Ranids represent an important part of the extant anuran diversity of Europe. One of the best-known genera is Pelophylax (green-water frog). This genus is considered to have arrived in Europe during the Eocene/Oligocene transition, with numerous occurrences of the genus throughout European Oligocene sites. Unfortunately, most of the specimens are isolated bones, hampering our understanding of the diversity and evolution of the genus during this time. We here present the description of an incomplete but articulated anuran skeleton from the lowest Oligocene of Chartres-de-Bretagne (western France). This specimen, missing its head, preserves almost all postcranial bones articulated and skin impressions. The osteological description allows to assign this specimen to Pelophylax kl. esculentus, making it one of the oldest known occurrences of the genus. We also suggest that specimens assigned to the late Oligocene "Rana" aquensis should be referred to the genus Pelophylax. The presence of a Pelophylax in western Europe during the early Oligocene indicates that the genus had already spread throughout Europe, no later than 5 Ma after its emergence in the eastern part of the continent. It suggests that Pelophylax benefitted from the extinction of ranoids during the "Grande Coupure." SUPPLEMENTARY FILES--Supplementary files are available for this article for free at www.tandfonline.com/UJVP.

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The fossil record and phylogeny of South American horned frogs (Anura, Ceratophryidae)

Cited by 15 publications

References 116 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

A new genus and species of frog from the Kem Kem (Morocco), the second neobatrachian from Cretaceous Africa

The oldest articulated ranid from Europe: a Pelophylax specimen from the lowest Oligocene of Chartres-de-Bretagne (N.W. France)

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