Title: The Ordovician trilobite Hadrohybus Raymond 1925, and its family relationships (Postilla)
First published: 1988
Subjects: Paleontology, Trilobites
Places: Norway, Svalbard, Spitsbergen Island
Time periods: Ordovician
LC classification: Q115 .N896 Nr. 160, etc., QE821 .N896 Nr. 160, etc.