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Montospira
Taxonomy
Montospira was named by Maxwell (1964) [Sepkoski's age data: C Mosc P Sakm Sepkoski's reference number: 797]. Its type is Montospira montoensis.
It was assigned to Pleurotomariidae by Maxwell (1964); to Archaeogastropoda by Sepkoski (2002); and to Neilsoniinae by Wagner (2023).
It was assigned to Pleurotomariidae by Maxwell (1964); to Archaeogastropoda by Sepkoski (2002); and to Neilsoniinae by Wagner (2023).
Species
Synonymy list
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Montospira Maxwell 1964
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†Montospira kempseyensis Campbell 1962
†Montospira kuttungensis Campbell 1961
†Montospira montoensis Maxwell 1964
Diagnosis
Reference | Diagnosis | |
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W. G. H. Maxwell 1964 | Small, turbiniform gastropod of moderate height, and with slightly enlarged body whorl ; whorl profile angular, extending horizontally or sl ightly upward from the suture, then curving abruptly downward to the periphery and rounding rapidly on to the flat base ; sutures deep ; selenizone well developed, on lower part of whorl ; ornament of transverse striae, recurved on to selenizone ; inductura absent, columellar l ip thi n ; four whorl s ; pleural angle 55°. |