Subject ASC0003uqg
The geologist : a popular monthly magazine of geology.
Vol.2 (1859), Page 106 (1859)
Natural History Museum Library, London
BHL Page 46197800
Keywords
Producta horrida fossil interior dorsal valve ventral posterior occlusor anterior oral woodward reniform king cardinal process divaricator hollow spiral arm Horridonia horrida (Producta horrida) dorsal valve ventral valve cardinal process Dorsal valve