Doyle 1992, pp.51-2, pl. 19, fig. 4 under Youngibelus simpsoni (Mayer-Eymar)
Reproduced with permission of the Palaeontographical Society
Belemnites aptus Simpson
| GROUP : | Belemnite Species |
| STATUS : | Lectotype |
| NUMBER : | WHITM:NEW1990.a |
| HORIZON : | Toarcian, Jurassic |
| LOCALITY : | Saltwick, N. Yorks. |
| REFERENCES : | Simpson 1884, p.36 Doyle 1992, pp.51-2, pl. 19, fig. 4 under Youngibelus simpsoni (Mayer-Eymar) Reproduced with permission of the Palaeontographical Society |
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