REPORT ON THE FISHES OF THE DEATH VALLEY EXPEDITION COLLECTED IN SOUTHERN CALIFORNIA AND NEVADA IN 1891, WITH DESCRIPTIONS OF NEW SPECIES

Two small keyhole limpets (Mollusca: Gastropoda: Fissurellidae) were collected live by the senior author and his father (Charles Powell) in the winters of 1967 and 1968 from the side/bottom of moderately flat rocks in the low intertidal zone at Doheny Beach State Park, Dana Point, Orange County, southern California. The larger specimen was collected in the winter of 1968 and the small specimen was collected in winter of 1967. These specimens resemble the genus Lucapinella yet do not quite match any of the known species. The shells are also somewhat similar to Dendrofissurella scutellum from South Africa and two species of Amblychilepas from Australia, however neither of the Dohney Beach specimens can be attributed to those species. This possible new species is assigned to the genus Lucapinella and remains unnamed until additional specimens can be located to determine if they are a new species, a rare exotic species, or a very unusual, miniature L. callomarginata.

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Speocarcinus berglundi n. sp. (Decapoda: Brachyura), a new crab from the Imperial Formation (late Miocene-late Pliocene) of southern California

Journal of Paleontology ◽

10.1017/s002233600002624x ◽

1994 ◽

Vol 68 (4) ◽

pp. 800-807 ◽

Cited By ~ 6

Author(s):

Annette B. Tucker ◽

Rodney M. Feldmann ◽

Charles L. Powell

Keyword(s):

New Species ◽

Late Miocene ◽

Southern California ◽

Late Pliocene ◽

Riverside County ◽

Isthmus Of Panama ◽

The Pacific ◽

Extant Species ◽

The Caribbean ◽

A New Species

Speocarcinus berglundi n. sp. is described from the Imperial Formation in Riverside County, California. Although the Imperial Formation spans late Miocene through late Pliocene time, the part of the unit that bears crabs has been radiometrically dated as late Miocene. The identification of a new species was based upon comparison with four extant species and represents the first documented fossil occurrence for the genus. The occurrence of this new species suggests that the genus may have originated in the Pacific and, during the Miocene, dispersed through the Isthmus of Panama to the Caribbean. Two of the specimens exhibit parasitism by Bopyridae (Isopoda).

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Middle Miocene planktonic microfossils and lower bathyal foraminifera from offshore southern California

Journal of Paleontology ◽

10.1017/s0022336000021788 ◽

1986 ◽

Vol 60 (2) ◽

pp. 249-267

Author(s):

Ted F. W. Bergen ◽

Joanne Sblendorio-Levy ◽

John T. Twining ◽

Richard E. Casey

Keyword(s):

New Species ◽

New Taxa ◽

Benthic Foraminifera ◽

Southern California ◽

Middle Miocene ◽

Calcareous Nannofossils ◽

Calcareous Nannofossil ◽

New Subspecies ◽

Submarine Ridge ◽

Age Range

Lower bathyal sediments representing portions of the Luisian and Mohnian stages of Kleinpell (1938) occur on a submarine ridge near Tanner Bank, offshore southern California. The presence of abundant and well-preserved calcareous nannofossils, diatoms, silicoflagellates, radiolarians and foraminifera allows accurate correlations with the onshore type sections of these stages. In terms of the calcareous nannofossil zones, the age range is from the Sphenolithus heteromorphus Zone to the Discoaster kugleri Zone. Although abundant benthic foraminifera indicative of the Luisian and Mohnian are present, they are accompanied by species more characteristic of the Pliocene Repettian Stage of Natland (1952) and the Pliocene-Miocene “Delmontian” Stage of Kleinpell (1938). Many of these latter species live today at lower bathyal depths (below 2,000 m), others occur in lower bathyal sediments as old as Oligocene, but are absent in the onshore type sections of the Luisian and Mohnian stages in coastal California. We ascribe their absence in onshore sequences to deposition at middle bathyal depths. The known chronostratigraphic ranges of several species are extended and five new species and two new subspecies of benthic foraminifera are described.The following new taxa are described: Bolivina pelita n. sp., Cassidulinella inflata n. sp., Globocassidulina undulata n. sp., Cibicidoides mckannai miocenicus n. subsp., C. mckannai sigmosuturalis n. subsp., Pullenia fragilis n. sp., Parafissurina inornata n. sp.

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Review of the bivalve genus Plicatula from Cretaceous and lower Cenozoic strata of California and Baja California

Journal of Paleontology ◽

10.1017/s0022336000039196 ◽

1997 ◽

Vol 71 (2) ◽

pp. 287-298 ◽

Cited By ~ 4

Author(s):

Richard L. Squires ◽

Louella R. Saul

Keyword(s):

New Species ◽

Los Angeles ◽

Lower Cretaceous ◽

Southern California ◽

Upper Cretaceous ◽

Baja California ◽

Middle Eocene ◽

Baja California Sur ◽

Northern California ◽

Three New Species

The Cretaceous and early Cenozoic species of the shallow-marine, warm-water bivalve Plicatula from California (United States) and Baja California (Mexico) are reviewed, and three new species are named. All of these species are representatives of Plicatula and not of the closely related taxon Harpax, which is associated with high-latitude and cool-water regions. The earliestknown Cretaceous species of Plicatula from the study area is P. variata Gabb, 1864, from Lower Cretaceous (Hauterivian Stage) strata in northern California, and our studies show it to be conspecific with Plicatula onoensis Anderson, 1958.Plicatula allisoni new species is from Lower Cretaceous (Albian Stage) strata in Baja California, Mexico. Plicatula modjeskaensis new species is from Upper Cretaceous (Turonian Stage) strata in the Santa Ana Mountains, southern California. A possible new species from the same strata is also mentioned. A poorly preserved specimen of Plicatula? sp. is known from Upper Cretaceous (upper Campanian to lower Maastrichtian) strata in northern California.The only Paleocene species of Plicatula from the study area is P. ostreiformis Stanton, 1896, from lower Paleocene strata of Lake County, northern California, and our studies show it to be conspecific with Ostrea buwaldana Dickerson, 1914. The only previously described Eocene species of Plicatula from the study area is P. juncalensis Squires, 1987, from lower middle Eocene (“Capay Stage”) strata of Los Angeles County, southern California. Plicatula surensis new species is from middle lower Eocene (“Capay Stage”) strata in Baja California Sur, Mexico. In addition, there is a Plicatula? sp. from Eocene strata of Baja California Sur, Mexico.Although Plicatula is of uncommon occurrence north of Baja California, its thermophilic trait makes it useful in recognizing periods of warm climate.

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