Subject ASC0001gzd
The Quarterly journal of the Geological Society of London.
v.60 (1904), Page [61] (1904)
Smithsonian Libraries
BHL Page 35259491
Keywords
natural size Fig 1. Nat. size. side view of striated coiled shell similar to a flat snail or nautilus shell fern-like dark patches and shapes on topmost areas of the shell entry point to shell is ragged and appears broken off Fig 2 Nat. Size. bottom or side view of striated coiled shell similar to flat snail or nautilus shell Perisphinctes plicatilis (Sow.) Perisphinctes plicatilis fossil Fossil Geology