Anura, Fischer von Waldheim, 1813
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publication ID |
https://doi.org/ 10.5252/geodiversitas2022v44a25 |
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publication LSID |
urn:lsid:zoobank.org:pub:EA12DCB7-A5BE-4763-B805-25087EBD726D |
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DOI |
https://doi.org/10.5281/zenodo.6926487 |
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persistent identifier |
https://treatment.plazi.org/id/03C887B9-FFB8-FFFB-7113-A7ABFCECFBDE |
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treatment provided by |
Felipe |
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scientific name |
Anura |
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Anura View in CoL View at ENA indet.
( Fig. 10 View FIG )
DESCRIPTION
Despite a swampy paleoenvironment that might be suitable for their occurrence and preservation, anurans are relatively scarce among the microvertebrate material from Angeac-Charente. In Angeac-Charente, anurans are represented by isolated, fragmentary bones, such as fused zeugopods ( Fig. 10A, B View FIG ) and urostyles ( Fig. 10C, D View FIG )
Among fused zeugopods, some are sufficiently well preserved to allow their identification.For instance, the general shape and length (even if the proximal part is missing) of specimen ANG M-63 ( Fig. 10A, B View FIG ), as well as several other features, allow its identification as a tibiofibula ( Thomas 1996): presence of a tibiofibular groove, deeper on the anterior face, between the fused zeugopod, and presence of a tibial crest on the anterior face ( Fig. 10A View FIG ). Among well-known Early Cretaceous anuran families are the Alytidae (= “ Discoglossidae ”), but within this family, the tibia and fibula remain unfused ( Roček 2000), unlike the Angeac-Charente specimen.
The specimen ANG M-64 ( Fig. 10C, D View FIG ) bears two broad and flattened articular facets anteriorly, and a small crest arises from its dorsal face. Four weakly marked ridges can be seen alongside this small crest, two on each side ( Fig. 9C View FIG ). This morphology identifies it as a urostyle. To date, incompleteness of the material limits comparisons with other Mesozoic anurans.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.