scholarly journals New Late Cretaceous and Early Tertiary Perissiiyidae (Gastropoda) from the Pacific Slope of North America

1988 ◽  
Vol 400 ◽  
pp. 1-25
Author(s):  
Louella R. Saul
Keyword(s):  
North America ◽  
Late Cretaceous ◽  
Early Tertiary ◽  
The Pacific ◽  
Pacific Slope

Latest Cretaceous and early Tertiary Tudiclidae and Melongenidae (Gastropoda) from the Pacific Slope of North America

1988 ◽  
Vol 62 (6) ◽  
pp. 880-889 ◽  
Author(s):  
Louella R. Saul
Keyword(s):  
North America ◽  
New Genus ◽  
Eastern Pacific ◽  
Early Tertiary ◽  
Late Paleocene ◽  
The Pacific ◽  
Pacific Slope

Four species belonging in Tudiclidae and one in Melongenidae have been confused with perissityids. The new genus Rapopsis is proposed for a tudiclid species, R. joseana n. sp. of early Maastrichtian age. Three other tudiclid species may belong in the Tethyan genus Pyropsis, P. fantozzii n. sp. of early to middle Paleocene age, P. striata (Stanton, 1896) of later Paleocene age, and ?P. gabbi (Stanton, 1896) probably of early to middle Paleocene age. The melongenid genus Protobusycon, represented by P. judithae n. sp. of late Paleocene age, has not previously been recognized in eastern Pacific faunas.

scholarly journals Added nerineoid gastropod evidence for a warm Turonian sea in southern California

2002 ◽  
Vol 76 (2) ◽  
pp. 386-390 ◽  
Author(s):  
L. R. Saul ◽  
R. L. Squires
Keyword(s):  
North America ◽  
Early Cretaceous ◽  
Late Cretaceous ◽  
Southern California ◽  
The Other ◽  
Northern California ◽  
The Pacific ◽  
Northeastern Pacific ◽  
Pacific Slope ◽  
North America North

Nerineoids, so typical of the Jurassic and Early Cretaceous in Europe, are usually rare and lacking in diversity in North America north of Mexico. This is especially true of the Pacific slope faunas. Only three species of nerineoid gastropods have previously been reported from the Cretaceous of California (Saul and Squires, 1998). The oldest of these species, Aphanoptyxis andersoni Saul and Squires, 1998, is from the Early Cretaceous (Hauterivian) in northern California. The other two species are Late Cretaceous (Turonian): Aphanoptyxis californica Saul and Squires, 1998, is from northern California, and Nerinella santana Saul and Squires, 1998, is from a locality and strata in southern California near the occurrence of Nerinella califae n. sp. The description of N. califae n. sp. gives California the greatest diversity of Turonian northeastern Pacific slope nerineoids, namely, Aphanoptyxis californica and two species of Nerinella. These Turonian nerineoids are also, thus far, the geologically youngest North American Pacific slope nerineoids.

Pacific Slope Cretaceous bivalves: eight venerid species

1993 ◽  
Vol 67 (6) ◽  
pp. 965-979 ◽  
Author(s):  
L. R. Saul
Keyword(s):  
New Species ◽  
North America ◽  
Southern California ◽  
New Genus ◽  
Baja California ◽  
The Other ◽  
New Genera ◽  
The North ◽  
The Pacific ◽  
Pacific Slope

Four new venerid species from the Cretaceous of the North American Pacific Slope are described and four previously described species are reassigned. Of the new species, two are allotted to new genera: Rhaiphiale based upon Rhaiphiale pharota n. sp. and Egrona based upon Egrona fallax n. sp., both Turonian in age and from southern California. The other new species are Loxo quintense n. sp., of late Maastrichtian age from California, and Paraesa cedrina n. sp., late Albian in age from Baja California, Mexico. The previously described species “Meretrix” arata Gabb, 1864, Turonian, and “?Meretrix” fragilis Gabb, 1869, late Maastrichtian, are placed in the new genus Callistalox; “Meretrix” lens (Gabb, 1864), Campanian age, and Flaventia zeta Popenoe, 1937, Turonian, are provisionally assigned to Paraesa Casey, 1952. This is the first identification of Paraesa from the Pacific Slope of North America. No species of Flaventia Jukes-Brown, 1908, is now known in Pacific Slope faunas.

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