Agama bibronii (Sauria : Agamidae) et chamaeleo chamaeleon (Sauria

Mouhsine, Touria; Amani, Fethi; Mikdad, Abdeslam

doi:10.4000/quaternaire.16948

Cited by 2 publications

(1 citation statement)

References 47 publications

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“…Actually, their fossil record is rather scarce—the majority of chameleon fossil remains consist of isolated and often fragmentary cranial elements; nevertheless, spectacularly preserved specimens have also been documented (Hillenius, 1978; Čerňanský et al, 2020). This poor fossil record is confined solely to the Lower and Middle Miocene of Central and southeastern Europe, Africa, and perhaps India, the Pliocene of southern Africa, and the Quaternary of southwestern Europe, the Middle East, northern Africa, and Madagascar (Hillenius, 1978; Moody & Rocěk, 1980; Estes, 1983; Fejfar & Schleich, 1994; Aouraghe et al, 2010; Čerňanský, 2010; Maul et al, 2011; Dollion et al, 2015; Georgalis et al, 2016; Sankhyan & Čerňanský, 2016; Smith et al, 2016; Čerňanský et al, 2020; Mouhsine et al, 2022). A purported chameleon specimen from the Cretaceous amber deposits of Myanmar (Daza et al, 2016) has since been subsequently shown to represent instead an albanerpetontid amphibian (Daza et al, 2020), while supposed referral of Paleogene forms (e.g., Palaeochamaeleo De Stefano, 1903, and Anqingosaurus Hou, 1976) to chamaeleonids has since been rejected as pertaining to other lizard clades (e.g., Rage & Augé, 2015; Dong et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

The antiquity of Asian chameleons—first potential Chamaeleonidae and associated squamate fauna from the Lower and Middle Miocene of Anatolia

Georgalis

Čerňanský

Göktaş

et al. 2022

Journal of Vertebrate Paleontology

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We here describe fossil remains from three Lower and Middle Miocene localities of Anatolia, which we tentatively refer to chamaeleonids. The material comprises isolated tooth-bearing bones from the Early Miocene (MN 3) of Sabuncubeli (western Anatolia), the Early Miocene (MN 4) of Dededağ(western Anatolia), and the Middle Miocene (MN 5) of the world-renowned hominoid locality of Pasalar (northwestern Anatolia). If our identifications are correct, these specimens would represent the only fossil record of this group from Anatolia as well as the oldest occurrences of chameleons from Asia. Moreover, the recovery of these specimens across different Lower and Middle Miocene localities, suggest that these animals were a typical element of the Anatolian herpetofaunas of the early Neogene. Differences among the specimens from the three localities point to a higher taxonomic diversity of Miocene Anatolian chamaeleonids, however, based on such limited material, intraspecific or ontogenetic variation cannot be ruled out. The oldest among these occurrences, the Sabuncubeli material, coincides chronologically with the oldest chameleons, which had been previously described from Central Europe (MN 3). As such, this supports the recently suggested biogeographic scenario, according to which chamaeleonids dispersed from Afro-Arabia to Europe during the Burdigalian, via the "Gomphotherium Landbridge," through Anatolia and the Balkans. Finally, a few additional lizard and snake remains from the locality of Dededağare described, adding to the poorly known fossil herpetofaunas of Anatolia.

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Section: Introductionmentioning

confidence: 99%

The antiquity of Asian chameleons—first potential Chamaeleonidae and associated squamate fauna from the Lower and Middle Miocene of Anatolia

Georgalis

Čerňanský

Göktaş

et al. 2022

Journal of Vertebrate Paleontology

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The world’s largest worm lizard: a new giant trogonophid (Squamata: Amphisbaenia) with extreme dental adaptations from the Eocene of Chambi, Tunisia

Georgalis,

Smith,

Marivaux

et al. 2024

Zoological Journal of the Linnean Society

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We here describe Terastiodontosaurus marcelosanchezi, a new amphisbaenian genus and species from the Eocene of Chambi, Tunisia. Using micro-computed tomography (μCT), we document the peculiar anatomy of the new taxon, which is characterized by extreme dental morphology, including one massive tooth on the maxilla and dentary, flat cheek teeth, and an array of other diagnostic features that readily differentiate it from all other amphisbaenians. We also redescribe the oldest named African amphisbaenian, Todrasaurus gheerbranti, from the late Palaeocene of Morocco, using μCT. Phylogenetic analysis recovers Terastiodontosaurus and Todrasaurus as sister taxa and provides strong support for a sister-group relationship of those two large-toothed amphisbaenians with extant Trogonophis. Accordingly, Todrasaurus shows that the divergence of crown Trogonophidae occurred much earlier than currently thought. Our survey of μCT scans reveals that Terastiodontosaurus, Todrasaurus, and Trogonophis are characterized by a great enamel thickness on their teeth, a feature that is absent in other examined amphisbaenians. Size estimates show that Terastiodontosaurus was the largest known amphisbaenian ever to have lived, with an estimated skull length of >5 cm. Based on new muscle data of Trogonophis, we estimate very high bite forces for Terastiodontosaurus, which would allow it to crush a wide variety of snails.

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Agama bibronii (Sauria : Agamidae) et chamaeleo chamaeleon (Sauria

Cited by 2 publications

References 47 publications

The antiquity of Asian chameleons—first potential Chamaeleonidae and associated squamate fauna from the Lower and Middle Miocene of Anatolia

The antiquity of Asian chameleons—first potential Chamaeleonidae and associated squamate fauna from the Lower and Middle Miocene of Anatolia

The world’s largest worm lizard: a new giant trogonophid (Squamata: Amphisbaenia) with extreme dental adaptations from the Eocene of Chambi, Tunisia

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