Fossil assemblage from the Khok Pha Suam locality of northeastern, Thailand: an overview of vertebrate diversity from the Early Cretaceous Khok Kruat Formation (Aptian-Albian)

Isolated microremains from Khok Pha Suam locality. Thaiodus ruchae tooth (a. PRCMR301) in labial view, Khoratodus foreyi tooth (b. PRCMR302) in lingual view, “Hybodus” aequitridentatus tooth (c. PRCMR303) in labial view, Heteroptychodus steinmanni tooth (d. PRCMR304) in apical view, Acrorhizodus khoratensis tooth (e. PRCMR305) in mesio-lingual or disto-lingual view, ginglymodian external side scales with ganoin, uncovered field and bone on the anterior margin (f–g. PRCMR305-306) in dorsal view, ginglymodian external side of the dermal bone (h. PRCMR307) in dorsal view, sinamiid centrum (i–j. PRCMR308) in anterior (i.) and dorsal (j.) views, carettochelyid shell fragment (k. PRCMR309) in dorsal view, adocid shell fragment (l. PRCMR310) in ventral view, neosuchian osteoderm (m. PRCMR311) in dorsal view, neosuchian tooth (n. PRCMR312) in lingual view, theropod tooth (o. SM2016-1-155), spinosaurid tooth morphotype I (p. PM2016-1-003) in anterior view, spinosaurid tooth morphotype II (q. PM2016-1-006) in anterior view, sauropod tooth (r. PRCMR315) in lingual view, iguanodontian tooth (s. SM2021-1-121), pterosaur tooth (t. PRCMR317), and bivalve mold right valve of articulated shell (u. PRCMR318) in external view. Scale bars: 0.5 cm (a, c–s); 1 cm (b).