Microhyla okinavensis Stejneger, 1901

Nakamura, Y & Ota, H, 2015, Late Pleistocene-Holocene amphibians from Okinawajima Island in the Ryukyu Archipelago, Japan: Reconfirmed faunal endemicity and the Holocene range collapse of forest-dwelling species, Palaeontologia Electronica 28 (6), pp. 1-26 : 12

Microhyla okinavensis Stejneger, 1901 (formerly known as M. ornata Duméril and Bibron, 1841 : see Matsui et al., 2005)— Okinawa Narrow-mouthed Toad

Figure 5.8

Occurrence (MNI). Sashiki (upper unit): 2.

Referred material. 2 ilia (right: RUMF-GF-04023). Ilium. The referred ilia ( Figure 5.8 ) of this tiny toad are distinguished from those of the other Japanese anurans on the basis of the lack of the crista dorsalis and the possession of a dorsally-protruded, conical-shaped tuber superior ( Nokariya, 1983a; Nakamura et al., 2009).

Figures

FIGURE 5. Fossils referred to Rana ulma (1–7) and Microhyla okinavensis (8). 1–3, right female humerus (one of 176 registered as RUMF-GF-04019) in ventral (1), medial (2), and dorsal (3) views; 4–6, right male humerus (one of 87 registered as RUMF-GF-04020) in ventral (4), medial (5), and dorsal (6) views; 7, right ilium (one of 93 registered as RUMF-GF-04021) in lateral view; and 8, right ilium (one of two registered as RUMF-GF-04023) in lateral view. Abbreviations are the same as Figure 3. Arrows indicate the proximal ends of the crista paraventralis. Scale bars equal 1 mm.