Where: Kern County, California (35.4° N, 118.8° W: paleocoordinates 35.3° N, 113.6° W)
• coordinate stated in text
When: Round Mountain Formation, Langhian (16.0 - 13.8 Ma)
• Stratigraphic horizon: lowermost part of Round Mountain silt. AGE: Changed to Langhian and "Round Mountain Silt" following EPICC stratigraphic revision.
Environment/lithology: marine; poorly lithified, gray siltstone
Size class: macrofossils
Collected by D. B. Birch, R. T. White, L. T. Martin, E. A. Watson, A. M .Keen in 1938 - 1940
• Collectors: Donald C Birch, 1938; Robert T. White, 1939; Lois T. Martin and Elizabeth A. Watson, 1940; A. Myra Keen, 1939.
Primary reference: A. M. Keen. 1943. New mollusks from the Round Mountain Silt (Temblor) Miocene of California. Transactions of the San Diego Society of Natural History 10(2):25-60 [J. Marcot/J. Marcot]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 206393: authorized by Jonathan Marcot, entered by Jonathan Marcot on 14.11.2019
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
"Yoldia temblorensis" = Yoldia (Yoldia) temblorensis, "Yoldia oregona" = Yoldia (Kalayoldia) oregona
"Yoldia temblorensis" = Yoldia (Yoldia) temblorensis Anderson and Martin 1914 clam
"Yoldia oregona" = Yoldia (Kalayoldia) oregona Shumard 1858 clam | |
"Nuculana ochsneri" = Nuculana (Saccella) ochsneri
"Nuculana ochsneri" = Nuculana (Saccella) ochsneri Anderson and Martin 1914 pointed nut clam | |
"Nucula (Ennucula) birchi n. sp." = Nucula (Leionucula) birchi
"Nucula (Ennucula) birchi n. sp." = Nucula (Leionucula) birchi Keen 1943 nut clam | |
"Aequipecten andersoni" = Pacipecten andersoni
"Aequipecten andersoni" = Pacipecten andersoni Arnold 1906 scallop as Aequipecten andersoni barkerianus ?
| |
Anadara osmonti Dall 1909 ark | |
Pandora (Kennerlyia) acutirostrata Clark 1918 clam | |
Tellina wilsoni, "Tellina (Peronidia) oldroydi" = Tellina (Eurytellina) oldroydi, Tellina (Arcopagia) ocoyana, "Tellina cf. arctata" = Macoma (Psammacoma) arctata, Macoma (Rexithaerus) copelandi
Tellina wilsoni Anderson and Martin 1914 tellin clam
"Tellina (Peronidia) oldroydi" = Tellina (Eurytellina) oldroydi Wiedey 1928 tellin clam
Tellina (Arcopagia) ocoyana Conrad 1855 tellin clam
"Tellina cf. arctata" = Macoma (Psammacoma) arctata Conrad 1849 tellin clam
Macoma (Rexithaerus) copelandi Wiedey 1928 tellin clam | |
Donax sp., "Bornia (Temblornia) triangulata" = Donax triangulata
"Bornia (Temblornia) triangulata" = Donax triangulata Anderson and Martin 1914 clam | |
"Mactra sectoris" = Mactromeris sectoris
"Mactra sectoris" = Mactromeris sectoris Anderson and Martin 1914 clam | |
Dosinia (Dosinidia) margaritana, Chione (Chione) temblorensis, "Chione (Lirophora) latilaminosa" = Chione (Anomalocardia) latilaminosa, Transennella joaquinensis
Dosinia (Dosinidia) margaritana Wiedey 1928 venus clam
Chione (Chione) temblorensis Anderson 1905 venus clam
"Chione (Lirophora) latilaminosa" = Chione (Anomalocardia) latilaminosa Anderson and Martin 1914 venus clam
Transennella joaquinensis Anderson and Martin 1914 venus clam | |
"Taras buwaldana" = Diplodonta (Diplodonta) buwaldana
"Taras buwaldana" = Diplodonta (Diplodonta) buwaldana Anderson and Martin 1914 clam | |
"Miltha sanctaecrucis" = Miltha (Miltha) sanctaecrucis, "Lucinisca menuda n. sp." = Lucina (Lucinisca) menuda
"Miltha sanctaecrucis" = Miltha (Miltha) sanctaecrucis Arnold 1909 clam
"Lucinisca menuda n. sp." = Lucina (Lucinisca) menuda Keen 1943 clam | |
Scaphopoda | |
"Dentalium petricola" = Rhabdus rectius
"Dentalium petricola" = Rhabdus rectius Carpenter 1864 tusk shell | |
Dentalium conradi Dall 1909 tusk shell | |
Gastropoda | |
Cylichna temblorensis n. sp., ? Cylichna loismartinae n. sp.
Cylichna temblorensis n. sp. Keen 1943 snail
? Cylichna loismartinae n. sp. Keen 1943 snail | |
Volvulella gluma Keen 1943 snail | |
Bulla cantuaensis Anderson and Martin 1914 snail | |
"Acteon boulderana" = Acteon boulderanus
"Acteon boulderana" = Acteon boulderanus Etherington 1931 snail | |
"Chrysallida rotundomontana n. sp." = Odostomia (Besla) rotundomontana, Turbonilla (Pyrgolampros) mariposa n. sp., Turbonilla (Pyrgiscus) bravoensis n. sp., Odostomia (Evalea) andersoni, "Pyramidella cooperi" = Pyramidella (Longchaeus) cooperi, "Syrnola scandix n. sp." = Pyramidella (Syrnola) ochsneri
"Chrysallida rotundomontana n. sp." = Odostomia (Besla) rotundomontana Keen 1943 snail
Turbonilla (Pyrgolampros) mariposa n. sp. Keen 1943 snail
Turbonilla (Pyrgiscus) bravoensis n. sp. Keen 1943 snail
Odostomia (Evalea) andersoni Bartsch and Hertlein 1917 Brea owl
"Pyramidella cooperi" = Pyramidella (Longchaeus) cooperi Anderson and Martin 1914 snail
"Syrnola scandix n. sp." = Pyramidella (Syrnola) ochsneri Anderson and Martin 1914 snail | |
Crepidula rostralis Conrad 1865 slipper shell
Calyptraea filosa Gabb 1866 slipper shell | |
"? Teinostoma (Teinostoma) lens n. sp." = Vitrinella (Vitrinellops) lens
"? Teinostoma (Teinostoma) lens n. sp." = Vitrinella (Vitrinellops) lens Keen 1943 snail | |
"Ficus (Trophosycon) ocoyana" = Ficus (Trophosycon) ocoyanus
"Ficus (Trophosycon) ocoyana" = Ficus (Trophosycon) ocoyanus Conrad 1855 fig shell | |
"Trophon kernensis" = Trophon (Austrotrophon) kernensis, Typhis (Talityphis) lampada n. sp.
"Trophon kernensis" = Trophon (Austrotrophon) kernensis Anderson 1905 murex snail
Typhis (Talityphis) lampada n. sp. Keen 1943 murex snail | |
Cancellaria barkeri, Cancellaria simplex, "Cancellaria ramonensis" = Cancellaria oregonensis, Cancellaria pacifica, "Cancellaria dalliana" = Cancellaria (Euclia) dalliana, "Cancellaria condoni" = Cancellaria (Euclia) condoni
Cancellaria barkeri snail
Cancellaria simplex Anderson 1905 snail
"Cancellaria ramonensis" = Cancellaria oregonensis Conrad 1865 snail
Cancellaria pacifica Anderson 1905 snail
"Cancellaria dalliana" = Cancellaria (Euclia) dalliana Anderson 1905 snail
"Cancellaria condoni" = Cancellaria (Euclia) condoni Anderson 1905 snail | |
"Olivella ischnon" = Olivella (Olivella) ischnon
"Olivella ischnon" = Olivella (Olivella) ischnon Keen 1943 olive snail | |
Turricula ochsneri Anderson and Martin 1914 snail
Turricula piercei Arnold 1909 snail
"Turricula buwaldana" = Turricula bulwaldana Anderson and Martin 1914 snail | |
Conus owenianus Anderson 1905 cone shell | |
Mangelia kernensis Anderson and Martin 1914 snail | |
"Terebra cooperi" = Terebra (Terebra) cooperi, Hastula gnomon n. sp.
"Terebra cooperi" = Terebra (Terebra) cooperi Anderson 1905 auger snail
Hastula gnomon n. sp. Keen 1943 auger snail | |
Megasurcula howei, "Moniliopsis electilis n. sp." = Ophiodermella electilis
Megasurcula howei Hanna and Hertlein 1938 turrid
"Moniliopsis electilis n. sp." = Ophiodermella electilis Keen 1943 turrid | |
Nassarius arnoldi, Nassarius antiselli, "Nassarius ocoyanus" = Nassarius (Phrontis) ocoyanus, "Nassarius blakei" = Nassarius (Phrontis) ocoyanus
Nassarius arnoldi Anderson 1905 snail
Nassarius antiselli Anderson and Martin 1914 snail
"Nassarius ocoyanus" = Nassarius (Phrontis) ocoyanus Anderson and Martin 1914 snail
"Nassarius blakei" = Nassarius (Phrontis) ocoyanus Anderson and Martin 1914 snail | |
Mitrella (Mitrella) anchuela n. sp., Anachis watsonae n. sp.
Mitrella (Mitrella) anchuela n. sp. Keen 1943 snail
Anachis watsonae n. sp. Keen 1943 snail | |
"Phos (Antillophos) dumbleana" = Antillophos, "Amphissa posunculensis" = Antillophos posunculensis
"Phos (Antillophos) dumbleana" = Antillophos true whelk
"Amphissa posunculensis" = Antillophos posunculensis Anderson and Martin 1914 true whelk | |
Bruclarkia geniculata snail | |
Natica posuncula Hanna and Hertlein 1938 moon snail
Sinum scopulosum Conrad 1849 moon snail
Neverita andersoni Clark 1918 moon snail
"Neverita callosa" = Glossaulax reclusiana Deshayes 1839 moon snail | |
Ferminoscala durhami n. sp., "Ferminoscala whitei n. sp." = Scalina whitei, Epitonium cf. indianorum
Ferminoscala durhami n. sp. Keen 1943 wentletrap
"Ferminoscala whitei n. sp." = Scalina whitei Keen 1943 wentletrap
Epitonium cf. indianorum Carpenter 1864 wentletrap | |
Balcis conchita n. sp., Eulima gabbiana
Balcis conchita n. sp. Keen 1943 snail
Eulima gabbiana Anderson and Martin 1914 snail | |
Turritella ocoyana Conrad 1855 turret shell | |
Calliostoma cf. diabloensis top snail |