Subject ASC0000z4n
The Quarterly journal of the Geological Society of London.
v.37 (1881), Page 93 (1881)
Smithsonian Libraries
BHL Page 43972119
Keywords
Tremadoc Wales Lower Tremadoc Hydrozoa Echinodermata Crustacea Brachiopoda Lamellibranciata Pteropoda Heterpoda Genera Species plantae protozoa hydrozoa actinozoa echinodermata annelida bryozoa brachiopoda lamellibranchiata gasteropoda pteropoda heteropda cephalopoda Classes Plantae Protozoa Annelida Bryozoa Brachipoda Lamellibranchiata Gasteropoda Heteropoda Cephalopoda fossils Lower Temadoc upper Tremadoc Geology british rocks lower Tremadoc Upper Lingula classes genera species tremadoc