Brachyopidae
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2021
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| _version_ | 1866901824136544256 |
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| author | Nonsrirach, Thanit Manitkoon, Sita Lauprasert, Komsorn |
| author_facet | Nonsrirach, Thanit Manitkoon, Sita Lauprasert, Komsorn |
| contents | <p><b>Brachyopidae indet.</b></p><p><b>Reference material</b></p><p>KS34-1481, posterior part of a skull (Fig. 6a–b); KS34-1474 (Fig. 3q–t) and KS34-1489 (Fig. 3u–x), intercentrum.</p><p><b>Formation/age</b></p><p>Phu Kradung Formation (Upper Jurassic).</p><p><b>Locality and sediment</b></p><p>The specimens were found in an outcrop at the Phu Noi locality, near Ban Dinchi village, Kham Muang District, Kalasin Province. Sediments at this site are grey to green siltstones. Other vertebrate fossils consist of the hybodont shark <i>Acrodus kalasinensis</i>, the ginglymodian fish <i>Isanichthys lertboosi</i>, the lungfish <i>Ferganoceratodus annekempae</i>, the xinjiangchelyid turtles <i>Phunoichelys thirakupti</i> and <i>Kalasinemys prasarttongosothi</i>, the teleosaurid crocodilian <i>Indosinosuchus potamosiamensis</i>, dinosaurs, and pterosaurs (Buffetaut et al., 2014; Cuny et al., 2014; Deesri et al., 2014; Tong et al., 2015, 2019; Martin et al., 2018; Cavin et al., 2020).</p><p><b>Description</b></p><p>The material consists of three temnospondyl specimens not found in association: the posterior part of the skull (KS 34- 1481, Fig. 6a–b) and two intercentra (KS 34-1474, Fig. 3q–t and KS34-1489, Fig. 3u–x). The skull (KS 34-1481) is short (approximately 14 cm width and 12 cm length), lacking otic notch and tabular horn in the supratemporal region. Ventrally, the interpterygoid vacuities are large, and the cultriform process of the parasphenoid is gracile and long. Posteriorly, the occipital condyles are rounded and projected well behind the posterior edge of the skull. This specimen is under study for a more detailed anatomical description. The intercentra (KS 34-1474 and KS34-1489) are wedge-shaped with concave posterior surface and slightly convex anterior surface. The anterior surface shows a well-marked deep circular pit. The short skull, which lacks otic notch and tabular horn, and the position of occipital condyles are typical characters of Brachyopidae (Warren and Marsicano, 1998, 2000), similar to those of the Jurassic brachyopid temnospondyl skull from China such as <i>Sinobrachyops placenticephalus</i> (Dong, 1985).</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_12110336 |
| institution | Zenodo |
| language | |
| publishDate | 2021 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Brachyopidae Nonsrirach, Thanit Manitkoon, Sita Lauprasert, Komsorn Biodiversity Taxonomy Animalia Chordata Amphibia Temnospondyli Brachyopidae <p><b>Brachyopidae indet.</b></p><p><b>Reference material</b></p><p>KS34-1481, posterior part of a skull (Fig. 6a–b); KS34-1474 (Fig. 3q–t) and KS34-1489 (Fig. 3u–x), intercentrum.</p><p><b>Formation/age</b></p><p>Phu Kradung Formation (Upper Jurassic).</p><p><b>Locality and sediment</b></p><p>The specimens were found in an outcrop at the Phu Noi locality, near Ban Dinchi village, Kham Muang District, Kalasin Province. Sediments at this site are grey to green siltstones. Other vertebrate fossils consist of the hybodont shark <i>Acrodus kalasinensis</i>, the ginglymodian fish <i>Isanichthys lertboosi</i>, the lungfish <i>Ferganoceratodus annekempae</i>, the xinjiangchelyid turtles <i>Phunoichelys thirakupti</i> and <i>Kalasinemys prasarttongosothi</i>, the teleosaurid crocodilian <i>Indosinosuchus potamosiamensis</i>, dinosaurs, and pterosaurs (Buffetaut et al., 2014; Cuny et al., 2014; Deesri et al., 2014; Tong et al., 2015, 2019; Martin et al., 2018; Cavin et al., 2020).</p><p><b>Description</b></p><p>The material consists of three temnospondyl specimens not found in association: the posterior part of the skull (KS 34- 1481, Fig. 6a–b) and two intercentra (KS 34-1474, Fig. 3q–t and KS34-1489, Fig. 3u–x). The skull (KS 34-1481) is short (approximately 14 cm width and 12 cm length), lacking otic notch and tabular horn in the supratemporal region. Ventrally, the interpterygoid vacuities are large, and the cultriform process of the parasphenoid is gracile and long. Posteriorly, the occipital condyles are rounded and projected well behind the posterior edge of the skull. This specimen is under study for a more detailed anatomical description. The intercentra (KS 34-1474 and KS34-1489) are wedge-shaped with concave posterior surface and slightly convex anterior surface. The anterior surface shows a well-marked deep circular pit. The short skull, which lacks otic notch and tabular horn, and the position of occipital condyles are typical characters of Brachyopidae (Warren and Marsicano, 1998, 2000), similar to those of the Jurassic brachyopid temnospondyl skull from China such as <i>Sinobrachyops placenticephalus</i> (Dong, 1985).</p> |
| title | Brachyopidae |
| topic | Biodiversity Taxonomy Animalia Chordata Amphibia Temnospondyli Brachyopidae |
| url | https://doi.org/10.5281/zenodo.12110336 |