Simpson 1855, p. 54
Simpson 1884, p. 86
Buckman 1921, pl. 208
Howarth 1962, p. 116
Dactylioceras crassulum (Simpson)
| GROUP : | Lower Jurassic Ammonite Species |
| STATUS : | Holotype |
| NUMBER : | WHITM:SIM489 |
| HORIZON : | Upper Lias, Jurassic |
| LOCALITY : | Whitby, North Yorkshire |
| REFERENCES : | Simpson 1843, p. 20 Simpson 1855, p. 54 Simpson 1884, p. 86 Buckman 1921, pl. 208 Howarth 1962, p. 116 |
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