First occurrence of brachyopid temnospondyls in Southeast Asia and review of the Mesozoic amphibians from Thailand Author Nonsrirach, Thanit Author Manitkoon, Sita Author Lauprasert, Komsorn text Fossil Record 2021 2021-03-12 24 1 33 47 http://dx.doi.org/10.5194/fr-24-33-2021 journal article 298643 10.5194/fr-24-33-2021 d7300392-709d-47cc-a2e5-a51acfe8e4cc 2193-0074 10965797 Anura indet. Reference material SHM-PT 529 ( Fig. 4a–b ) and SHM-PT 530 ( Fig. 4c–d ), humeri; SHM-HY 231 ( Fig. 4e–f ), pelvic girdle ( Srisuk, 2002 , 2005 ). Formation/age Sao Khua Formation (Lower Cretaceous). Locality and sediment The humeri (SHM-PT 529 and SHM-PT 530) were collected in a road cut outcrop near Phu Phan Thong village, Muang District, Nong Bua Lamphu Province . These fossils were embedded in a pale olive fine-grained siltstone ( Srisuk, 2002 ). The pelvic girdle (SHM-HY 231) was discovered in a road cut outcrop near the Huai Lao Yang reservoir road, Nong Bua Lamphu Province . The outcrop is formed by reddish-brown micaceous siltstones and lime-nodule conglomerates ( Srisuk, 2005 ). Description The left (SHM-PT 529) and right humeri (SHM-PT 530) are represented by their distal parts. They are elongated with a slender shaft, slightly curved in lateral view, with rounded capitulum. The partial pelvic girdle (SHM-HY 231) consists of parts of the ischium, pubis, and acetabulum, while the ilium shaft is not preserved. The acetabular fossa is nearly circular with a posteriorly widened acetabular rim. The base of the ilium shaft has a triangular cross section. These features are reminiscent of an anuran amphibian, but the taxonomic identification of these incomplete specimens is difficult.