POLYLOPIA fossil mollusk? Taxonomic redescription USGS Prof Paper 593F Yochelson

Description

USGS Professional Paper 593-F
Vintage out-of-print USGS Professional Paper - On the Nature of
Polylopia
.
PP-593-F: Yochelson, E. L., 1968, 7 pages, 1 photo plate
.
Excellent paleontologic/taxonomic study of Ordovician Polylopia
fossils of the interior USA
.
Excellent condition, almost like new, very light paper aging and fading at edges, binding is excellent with no loose pages or cover, no writing or marks of any kind.
From a non-smoking environment.
Please see my other listings for more paleontologic publications.
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