Protospinax sp. 2

Kriwet, Jürgen, 2003, Neoselachian remains (Chondrichthyes, Elasmobranchii) from the Middle Jurassic of SW Germany and NW Poland, Acta Palaeontologica Polonica 48 (4), pp. 583-594 : 592

Protospinax sp. 2

Fig. 3J .

Material.—A single isolated tooth crown, BGRX 12508, Kłęby: 244.8–245.7 m. Callovian.

Remarks.—This specimen is characterised by a mesio−distally elongated crown with a slender but well−developed cusp that is displaced distally. The crown is asymmetrical resulting in an elongated mesial heel. The cutting edge is strongly crenulated and a very low, blunt and rudimentary cusplet is developed on the distal heel. The basal margin of the labial face is concave. This specimen is very similar to a tooth from the Bathonian of England (Charlie J. Underwood personal communication 2002).

Figures

Fig. 3. A. Paratype of Folipistrix digitulus gen. et sp. nov. SMNS 87862, Weilen unter den Rinnen, SW Germany, Dogger α, lower Aalenian; in labial view, × 52. B–C. Orectolobiformes, fam. gen. et sp. indet. Weilen unter den Rinnen, SW Germany, Dogger α, lower Aalenian. B. Specimen SMNS 87863; in labial view, × 85. C. Specimen SMNS 87864; in labial view, × 115. D. Holotype of Synechodus prorogatus sp. nov. BGRX 12503, Kłęby 1/37: 244.8–245.7 m, Callovian; in labial (D1), occlusal (D2), lateral (D3), and lingual (D4) views. All × 40. E. Isolated lateral cusplet of Synechodus prorogatus sp. nov., BGR X 12504, Kłęby 1/37: 244.8–245.7 m, Callovian; in labial (E1) and lingual (E2) views. Both × 30. F. Protospinax cf. annectans Woodward, 1919. Specimen BGRX 12505, Kłęby 1/37: 244.8–245.7 m, Callovian; in labial (F 1), lateral (F2), occlusal (F3), and lingual (F4) views. All × 65. G. Protospinax cf. annectans Woodward, 1919. Specimen BGRX 12506, Kłęby 1/37: 244.8–245.7 m, Callovian; in labial (G 1), lateral (G2), occlusal (G3), and lingual (G4) views. All × 32. H. Protospinax sp. 1. BGRX 12507, Kłęby: 244.8–245.7 m, Callovian; in labial (H 1), lateral (H2), occlusal (H3), and lingual (H4) views. All × 40. J. Protospinax sp. 2. BGRX 12508, Kłęby 1/37: 244.8–245.7 m, Callovian. Labial view. K. Squalogaleus sp. BGRX 12509, Kłęby 1/37: 244.8–245.7 m, Callovian; in labial (K1), lateral (K2), occlusal (K3), and lingual (K4) views. All × 50. L. Synechodus prorogatus sp. nov.? BGRX 12510, Kłęby 1/37: 253.6–~265 m, Callovian. Labial view, × 28. M. Scyliorhinidae indet. BGRX 12511, Kłęby 1/37: 253.6–~265, Callovian; in labial view, × 14. N. Neoselachii indet. BGR X 12512, Kłęby 1/37: 253.6–~265, Callovian; in labial view, × 22.