MolluscaBase source details
Girty, G. H. (1912). On some invertebrate fossils from the Lykins Formation of eastern Colorado. Annals of the New York Academy of Sciences. 22(1): 1-8.
450562
10.1111/j.1749-6632.1912.tb55157.x [view]
Girty, G. H.
1912
On some invertebrate fossils from the Lykins Formation of eastern Colorado
Annals of the New York Academy of Sciences
22(1): 1-8
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Colorado for Alula squamulifera Girty, 1912 †