UCMP loc. 1131, Walnut Creek (Oligocene of the United States)
Where: Contra Costa County, California (37.9° N, 122.1° W: paleocoordinates 36.5° N, 114.3° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Late/Upper Oligocene (28.4 - 23.0 Ma)
• "Near the base of the Agasoma gravidum zone."
• group of beds-level stratigraphic resolution
Environment/lithology: marine; lithology not reported
Size class: macrofossils
Reposited in the UCMP
Primary reference: B. L. Clark. 1918. The San Lorenzo series of Middle California. a stratigraphic and paleontologic study of the San Lorenzo Oligocene series of the general region of Mount Diablo, California. University of California Publications Bulletin of the Department of Geology 11(2):45-234 [J. Marcot/J. Marcot]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 122273: authorized by Wolfgang Kiessling, entered by Uta Merkel on 20.12.2011, edited by Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Echinoidea | |
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? Strongylocentrotus sp. Brandt 1835 sea urchin | |
| Gastropoda | |
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Sinum scopulosum, Natica (Euspira) ramonensis n. sp., "Natica (Neverita) recluziana" = Glossaulax reclusiana
Sinum scopulosum Conrad 1849 moon snail
Natica (Euspira) ramonensis n. sp. Clark 1918 moon snail
"Natica (Neverita) recluziana" = Glossaulax reclusiana Deshayes 1839 moon snail type locality of ssp. Natica (Neverita) recluziana andersoni
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"Ficus pyriformis" = Ficus modesta
"Ficus pyriformis" = Ficus modesta Conrad 1848 fig shell | |
"Bursa mathewsonii" = Mediargo mathewsoni
"Bursa mathewsonii" = Mediargo mathewsoni Gabb 1866 triton shell | |
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Thais packi Clark 1918 murex snail | |
"Fusinus (Exilia) lincolnensis" = Exilia lincolnensis
"Fusinus (Exilia) lincolnensis" = Exilia lincolnensis Weaver 1916 snail | |
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Olivella quadriplicata n. sp. Clark 1918 olive snail | |
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Turris (Pleurotoma) thurstonensis Weaver 1916 turrid
Turris altuscollus n. sp. Clark 1918 turrid | |
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Columbella (Mitrella) tenuilineata n. sp. Clark 1918 snail | |
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"Searlesia dalli" = Calicantharus dalli Clark 1918 snail | |
? Chrysodomus pulcherrimus n. sp.
? Chrysodomus pulcherrimus n. sp. Clark 1918 true whelk | |
"Cancellaria ramonensis n. sp." = Cancellaria oregonensis
"Cancellaria ramonensis n. sp." = Cancellaria oregonensis Conrad 1865 snail | |
"Calyptraea radians" = Trochita radians
"Calyptraea radians" = Trochita radians Lamarck 1816 slipper shell | |
Natica (Ampullina) gabbi n. sp.
Natica (Ampullina) gabbi n. sp. Clark 1918 snail | |
Cylichna ramonensis n. sp.
Cylichna ramonensis n. sp. Clark 1918 snail | |
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Calliostoma lawsoni Clark 1918 top snail | |
| Bivalvia | |
"Yoldia cf. oregona" = Yoldia (Kalayoldia) oregona, "Yoldia cooperi" = Yoldia (Kalayoldia) cooperii
"Yoldia cf. oregona" = Yoldia (Kalayoldia) oregona Shumard 1858 clam | |
"Leda ramonensis n. sp." = Nuculana (Saccella) ramonensis, "Leda pulchrisinuosa n. sp." = Nuculana (Saccella) pulchrisinuosa
"Leda ramonensis n. sp." = Nuculana (Saccella) ramonensis Clark 1918 pointed nut clam
"Leda pulchrisinuosa n. sp." = Nuculana (Saccella) pulchrisinuosa Clark 1918 pointed nut clam | |
"Acila muta n. sp." = Acila (Truncacila) muta, "Nucula postangulata" = Nucula (Leionucula) postangulata
"Acila muta n. sp." = Acila (Truncacila) muta Clark 1918 divaricate nutclam also type locality of ssp. Acila muta markleyensis
"Nucula postangulata" = Nucula (Leionucula) postangulata Clark 1918 nut clam | |
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Pandora (Pandora) acutirostrata n. sp. Clark 1918 clam | |
"Periploma undulata" = Periploma binominata
"Periploma undulata" = Periploma binominata Hanna 1924 clam | |
Cyathodonta weaveri n. sp.
Cyathodonta weaveri n. sp. Clark 1918 clam | |
"Diplodonta stephensoni n. sp." = Diplodonta (Diplodonta) stephensoni
"Diplodonta stephensoni n. sp." = Diplodonta (Diplodonta) stephensoni Clark 1918 clam | |
"? Spisula saxadomoides n. sp." = Tresus saxadomoides, ? Mulinia sp., "Spisula ramonensis" = Mactromeris ramonensis
"? Spisula saxadomoides n. sp." = Tresus saxadomoides Clark 1918 clam
? Mulinia sp. Gray 1837 clam
"Spisula ramonensis" = Mactromeris ramonensis Packard 1916 clam also as ssp. Spisula ramonensis attenuata
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Macrocallista weaveri n. sp., ? Macrocallista incognita n. sp., "Antigona mathewsonii" = Amiantis mathewsoni3, "Antigona (Artena) neglecta" = Amiantis mathewsoni, "Callocardia (Agriopoma) californica n. sp." = Pitaria (Katherinella) californica, Antigona (Ventricola) undosa, "Dosinia whitneyi" = Dosinia (Dosinia) whitneyi3, "Dosinia mathewsonii" = Dosinia (Dosinia) whitneyi3, "Chione cryptolineata n. sp." = Securella cryptolineata, "Chione lineolata n. sp." = Securella cryptolineata, "Chione mediostriata n. sp." = Securella cryptolineata, Pitaria lorenzana n. sp.
Macrocallista weaveri n. sp. Clark 1918 venus clam
? Macrocallista incognita n. sp. Clark 1918 venus clam
"Antigona (Artena) neglecta" = Amiantis mathewsoni Gabb 1866 venus clam
"Callocardia (Agriopoma) californica n. sp." = Pitaria (Katherinella) californica Clark 1918 venus clam
Antigona (Ventricola) undosa Clark 1918 venus clam
"Chione cryptolineata n. sp." = Securella cryptolineata Clark 1918 venus clam
"Chione lineolata n. sp." = Securella cryptolineata Clark 1918 venus clam
"Chione mediostriata n. sp." = Securella cryptolineata Clark 1918 venus clam
Pitaria lorenzana n. sp. Clark 1918 venus clam | |
"Metis rostellata n. sp." = Psammotreta (Leporimetis) rostellata, "Tellina tenuilineata n. sp." = Tellina (Tellinella) tenuilineata
"Metis rostellata n. sp." = Psammotreta (Leporimetis) rostellata Clark 1918 tellin clam
"Tellina tenuilineata n. sp." = Tellina (Tellinella) tenuilineata Clark 1918 tellin clam | |
"Cardium cf. vaquerosensis" = Dallocardia vaquerosense, "Cardium dickersoni n. sp." = Clinocardium (Clinocardium) dickersoni
"Cardium cf. vaquerosensis" = Dallocardia vaquerosense Arnold 1908 cockle
"Cardium dickersoni n. sp." = Clinocardium (Clinocardium) dickersoni Clark 1918 cockle | |
Mya (Cryptomya) incognita n. sp.
Mya (Cryptomya) incognita n. sp. Clark 1918 softshell clam | |
"Pholadidea aff. penita" = Penitella penita
"Pholadidea aff. penita" = Penitella penita Conrad 1837 clam | |
"Solen (Plectosolen) curtus" = Solena (Plectosolen) conradi, "Solen gravidus n. sp." = Solena (Plectosolen) gravidus
"Solen (Plectosolen) curtus" = Solena (Plectosolen) conradi Dall 1900 clam
"Solen gravidus n. sp." = Solena (Plectosolen) gravidus Clark 1918 clam | |
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"Mytilus arnoldi" = Mytilus (Mytilus) arnoldi Clark 1918 mussel | |
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Ostrea sp. Linnaeus 1758 oyster | |
Anomia inconspicua n. sp.
Anomia inconspicua n. sp. Clark 1918 jingle | |
"Pecten (Pseudomuseum) alternilineatus n. sp." = Delectopecten alternilineatus
"Pecten (Pseudomuseum) alternilineatus n. sp." = Delectopecten alternilineatus Clark 1918 scallop | |
"Arca (Scapharca) mediaimpressa n. sp." = Anadara (Anadara) mediaimpressa, "Arca (Scapharca) submontereyana" = Anadara (Anadara) submontereyana
"Arca (Scapharca) mediaimpressa n. sp." = Anadara (Anadara) mediaimpressa Clark 1918 ark
"Arca (Scapharca) submontereyana" = Anadara (Anadara) submontereyana Clark 1918 ark | |
"Glycimeris tenuimbricata n. sp." = Glycymeris (Tucetona) tenuimbricata, "Glycimeris buwaldi n. sp." = Glycymeris (Glycymeris) buwaldi
"Glycimeris tenuimbricata n. sp." = Glycymeris (Tucetona) tenuimbricata Clark 1918 clam
"Glycimeris buwaldi n. sp." = Glycymeris (Glycymeris) buwaldi Clark 1918 clam | |
| Scaphopoda | |
Dentalium radiolineata n. sp.
Dentalium radiolineata n. sp. Clark 1918 tusk shell | |
| Polyplacophora | |
"Amphineura indet." = Polyplacophora
"Amphineura indet." = Polyplacophora de Blainville 1816 chiton | |
| Anthozoa | |
Siderastrea clarki n. sp.2
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Dendrophyllia californiana n. sp.3
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