Media type: Text; E-Book Title: Morphological observations on the bellerophont Ptomatis patulus (Hall) (Gastropoda, Bellerophontacea). American Museum novitates ; no. 2242 Contributor: Rollins, Harold B., 1939- [Author] Published: New York, N.Y. : American Museum of Natural History, 1966 Extent: 1495214 bytes Language: English Keywords: Mollusks ; Gastropoda ; Paleontology -- Devonian -- New York (State) ; Fossil -- New York (State) ; QL1 .A436 no.2242 ; Paleontology -- New York (State) ; Cyrtonella mitella ; Ptomatis patulus Origination: Footnote: Diese Datenquelle enthält auch Bestandsnachweise, die nicht zu einem Volltext führen. Description: 7 p. : ill. ; 24 cm. ; Includes bibliographical references (p. 6-7).