Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . ABC Fig. 246. Menabites {Delawarella) delawarensis (Morton, 1830). SAS-Z2097. x 1. 324 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 247. A. Menabites (Delawarella) delawarensis (Morton, 1830). A. Whorl section ofSAS-Z2907. X 2. B. Menabites {Delawarella) subdelawarensis Collignon, 1948. Suture line ofSAS-Z2100. X 1. CRETACEOUS FAUNAS FROM SOUTH AFRICA 325 transitional between Menabites and M. (Delawarella). M. {Delawarella) roedereri is similar in this respect in having strong orna-ment, but differs mainly in having
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . ABC Fig. 246. Menabites {Delawarella) delawarensis (Morton, 1830). SAS-Z2097. x 1. 324 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 247. A. Menabites (Delawarella) delawarensis (Morton, 1830). A. Whorl section ofSAS-Z2907. X 2. B. Menabites {Delawarella) subdelawarensis Collignon, 1948. Suture line ofSAS-Z2100. X 1. CRETACEOUS FAUNAS FROM SOUTH AFRICA 325 transitional between Menabites and M. (Delawarella). M. {Delawarella) roedereri is similar in this respect in having strong orna-ment, but differs mainly in having a more compressed whorl section. Collignon (1948: 32) separated M. {Delawarella) subdelawarensis (describedbelow) as a Malagasy representative of this American species, differing mainlyin having weaker ornament, and also a more compressed whorl section. Thesereasons appear sufficient for separation of the two species. Unfortunately, none of the Zululand specimens has the body chamberpreserved, but the magnificent specimen illustrated by Reeside (1962, pi. 74(fig. 2)) shows the low, broad ribbing on the flanks. Occurrence Campanian of Zululand, Gulf Coast region, and Delaware and New Jerseyreg
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
