Opisthoproctus grimaldii Zugmayer, 1911

Van Hinsbergh, Victor W. M. & Helwerda, Renate A., 2019, Fish Otoliths from the Cabarruyan Piacenzian-Gelasian fauna found in the Philippines, Zootaxa 4563 (3), pp. 401-443 : 406

Opisthoproctus grimaldii Zugmayer, 1911

(Figure 8)

1995 Opisthoproctus grimaldii Smale MJ, Watson G, Hecht T, p. 26, plate 10, fig. A1

1999 Opisthoproctus grimaldii Rivaton J, Bourret P , pp. 194–195, plate 88, fig. 7–8

2013b Opisthoproctus grimaldii Schwarzhans W , plate 2, fig. 11

2013 Opisthoproctus grimaldi Nolf D , plate 41

Material: 1 specimen in total. Roxas (1) RGM 962099.

One eroded otolith (OL:OH= 0.63) reflects the characteristics of the recent Opisthoproctus grimaldii well. The outer surface has thin short furrows perpendicular to the dorsal and ventral rims and a markedly elevated smoothened middle part.