San Pedro area (1900s-1950s) [Lomita Marl] (Pleistocene of the United States)

Where: Los Angeles County, California (33.7° N, 118.3° W: paleocoordinates 33.7° N, 118.3° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Lomita Marl Formation, Middle Pleistocene (0.8 - 0.1 Ma)

• LITHOSTRATIGRAPHY: A composite from the Lomita Marl, which unconformably overlies the Altamira Shale, Valmote Diatomite and Malaga Mudstone, and is overlain by the Timms Point Silt, Sand Pedro Sand, or Palos Verdes Sand. AGE: Middle Pleistocene. STRATIGRAPHIC POSITION: A composite from multiple unspecified collections from the San Pedro Sand so assigned a formation stratigraphic resolution.

• formation-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified, calcareous marl

• ENVIRONMENT: Typically containing an inner-mid shelf fauna.
• SPECIFIC LITHOLOGY: Not listed, but generally a unconsolidated calcareous silt or marl. LITHIFICATION: Not stated, but typically poorly llithified.

Size classes: macrofossils, mesofossils

Preservation: original aragonite, original calcite

Collection methods: COLLECTOR: unknown, possible multiple collectors. REPOSITORY: unknown, possible multiple repositories.

Primary reference: U.S. Grant IV. 1936. Summary of the marine Pleistocene of California. Geolological Society of America Proceedings for 1935 349-350 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 223525: authorized by Austin Hendy, entered by Austin Hendy on 15.11.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to molluscs stated or figured in text. NOMENCLATURE: Updated to 1960s era, so somewhat antiquated but standardized and typically resolved to species resolution.
unclassified
  -
Gastropoda
 Patellida - Lottiidae
"Acmaea lepisma" = Lottia depicta2, "Acmaea insessa" = Lottia insessa2, "Acmaea limatula" = Lottia limatula2, Acmaea ocharacea2, Acmaea funiculata2
"Acmaea lepisma" = Lottia depicta2 Hinds 1842 limpet
"Acmaea insessa" = Lottia insessa2 Hinds 1842 limpet
"Acmaea limatula" = Lottia limatula2 Carpenter 1864 limpet
Acmaea funiculata2 Carpenter 1864 limpet
 Trochoidea - Trochidae
"Tegula montereyi" = Chlorostoma montereyi2, "Pupillaria optabilis" = Lirularia optabilis2, Calliostoma annulatum2, Calliostoma ligatum2, "Calliostoma doliarium" = Calliostoma canaliculatum2
"Tegula montereyi" = Chlorostoma montereyi2 Kiener 1850 top snail
"Pupillaria optabilis" = Lirularia optabilis2 Carpenter 1864 top snail
Calliostoma annulatum2 Lightfoot 1786 top snail
Calliostoma ligatum2 Gould 1849 top snail
"Calliostoma doliarium" = Calliostoma canaliculatum2 Lightfoot 1786 top snail
 Trochoidea - Turbinidae
"Homalopoma bacula" = Homalopoma (Homalopoma) baculum2, "Homalopoma subobsoletum" = Homalopoma (Homalopoma) subobsoletum2, Homalopoma paucicostatum2, "Pupillaria sp." = Margarites (Pupillaria)2
"Homalopoma bacula" = Homalopoma (Homalopoma) baculum2 Carpenter 1864 snail
"Homalopoma subobsoletum" = Homalopoma (Homalopoma) subobsoletum2 Willett 1937 snail
Homalopoma paucicostatum2 Dall 1871 snail
"Pupillaria sp." = Margarites (Pupillaria)2 Dall 1909 snail
 Trochoidea - Solariellidae
"Solariella permabilis" = Minolia peramabilis2, "Solariella rhyssa" = Minolia peramabilis2
"Solariella permabilis" = Minolia peramabilis2 Carpenter 1864 snail
"Solariella rhyssa" = Minolia peramabilis2 Carpenter 1864 snail
 Trochoidea - Liotiidae
Liotia fenestrata2 Carpenter 1864 snail
 Lepetellida - Fissurellidae
Puncturella delosi2 Arnold 1907 puncturella
 Sorbeoconcha - Caecidae
"Micranellum crebricinctum" = Caecum crebricinctum2, "Caecum grippi" = Caecum quadratum2, Caecum californicum2
"Micranellum crebricinctum" = Caecum crebricinctum2 Carpenter 1864 snail
"Caecum grippi" = Caecum quadratum2 Carpenter 1857 snail
Caecum californicum2 Dall 1885 snail
 Sorbeoconcha - Cerithiopsidae
"Cerithiopsis cosmia" = Cerithiopsidella cosmia2
"Cerithiopsis cosmia" = Cerithiopsidella cosmia2 Bartsch 1907 snail
 Sorbeoconcha - Newtoniellidae
"Cerithiopsis necropolitana" = Cerithiopsida necropolitana2
"Cerithiopsis necropolitana" = Cerithiopsida necropolitana2 Bartsch 1911 snail
 Sorbeoconcha - Triphoridae
"Triphora pedroana" = Monophorus pedroanus2
"Triphora pedroana" = Monophorus pedroanus2 Bartsch 1907 snail
 Sorbeoconcha - Rissoidae
"Alvania purpurea" = Alvinia purpurea2, "Alvania acutelirata" = Actonia compacta2
"Alvania purpurea" = Alvinia purpurea2 Dall 1871 snail
"Alvania acutelirata" = Actonia compacta2 Carpenter 1864 snail
 Sorbeoconcha - Barleeiidae
"Diala marmorea" = Pseudodiala acuta2 Carpenter 1864 snail
Barleeia haliotiphila2 Carpenter 1864 snail
 Neogastropoda - Olividae
"Olivella biplicata" = Callianax biplicata2, "Olivella baetica" = Callianax baetica2
"Olivella biplicata" = Callianax biplicata2 Sowerby 1825 olive snail
"Olivella baetica" = Callianax baetica2 Carpenter 1864 olive snail
 Neogastropoda - Columbellidae
Mitrella gasuapata2 snail
AS: Mitrella carinata gasuapata
Mitrella tuberosa2 Carpenter 1864 snail
"Mitrella carinata" = Alia carinata2 Hinds 1844 dovesnail
Amphissa versicolor2 Dall 1871 snail
 Neogastropoda - Nassariidae
""Nassa" perpinguis" = Caesia perpinguis2, ""Nassa" mendica" = Hima mendica2, ""Nassa" cooperi" = Hima cooperi2
""Nassa" perpinguis" = Caesia perpinguis2 Hinds 1844 snail
""Nassa" mendica" = Hima mendica2 Gould 1849 snail
""Nassa" cooperi" = Hima cooperi2 Forbes 1852 snail
AS: "Nassa" mendica cooperi
 Neogastropoda - Fasciolariidae
Barbarofusus barbarensis2 Trask 1855 snail
 Neogastropoda - Cancellariidae
"Cancellaria cooperi" = Progabbia cooperii2, "Massyla gracilior" = Admete gracilior2
"Cancellaria cooperi" = Progabbia cooperii2 Gabb 1865 snail
"Massyla gracilior" = Admete gracilior2 Gabb 1869 admete
 Neogastropoda - Muricidae
"Ocinebra interfossa" = Paciocinebrina interfossa2, "Ocinebra foveolata" = Paciocinebrina foveolata2, "Ocinebra munda" = Ocenebra2, Ceratostoma nuttalli2, Boreotrophon stuarti2, Boreotrophon pacificus2, Boreotrophon multicostatus2, "Boreotrophon pedroanus" = Boreotrophon pedroana2
"Ocinebra interfossa" = Paciocinebrina interfossa2 Carpenter 1864 murex snail
"Ocinebra foveolata" = Paciocinebrina foveolata2 Hinds 1844 murex snail
"Ocinebra munda" = Ocenebra2 murex snail
AS: Ocinebra lurida munda
Ceratostoma nuttalli2 Conrad 1837 murex snail
Boreotrophon stuarti2 Smith 1880 murex snail
Boreotrophon pacificus2 Dall 1902 murex snail
Boreotrophon multicostatus2 Eschscholtz 1829 murex snail
"Boreotrophon pedroanus" = Boreotrophon pedroana2 Arnold 1903 murex snail
 Neogastropoda - Cystiscidae
"Cystiscus regularis" = Gibberula subtrigona2, "Cypraeolina pyriformis" = Granulina margaritula2
"Cystiscus regularis" = Gibberula subtrigona2 Carpenter 1864 snail
"Cypraeolina pyriformis" = Granulina margaritula2 Carpenter 1857 snail
 Neogastropoda - Marginellidae
"Hyalina californica" = Volvarina taeniolata2
"Hyalina californica" = Volvarina taeniolata2 Mörch 1860 margin shell
 Neogastropoda - Conidae
"Conus californicus" = Californiconus californicus2
"Conus californicus" = Californiconus californicus2 Reeve 1844 cone shell
 Sorbeoconcha - Vermetidae
"Aletes squamigerus" = Thylacodes squamigerus2 Carpenter 1857 worm shell
 Sorbeoconcha - Littorinidae
"Littorina scutulata" = Littorina (Littorina) scutulata2 Gould 1849 periwinkle
Lacuna unifaciata2 periwinkle
 Sorbeoconcha - Procerithiidae
"Bittium attenuatum" = Lirobittium attenuatum2, "Bittium asperum" = Lirobittium asperum2, "Bittium interfossum" = Lirobittium interfossum2, "Bittium armillatum" = Lirobittium armillatum2
"Bittium attenuatum" = Lirobittium attenuatum2 Carpenter 1864 snail
"Bittium asperum" = Lirobittium asperum2 Gabb 1861 snail
"Bittium interfossum" = Lirobittium interfossum2 Carpenter 1864 snail
"Bittium armillatum" = Lirobittium armillatum2 Carpenter 1864 snail
 Neotaenioglossa - Calyptraeidae
Calyptraea fastigiata2 Gould 1846 slipper shell
Crepidula onyx2 Sowerby 1824 slipper shell
Crepidula nummaria2 Gould 1846 slipper shell
Crepidula adunca2 Sowerby 1824 slipper shell
Crepipatella charybdis1 Berry 1940 slipper shell
Crepipatella lingulata2 Gould 1846 slipper shell
 Cerithioidea - Turritellidae
Turritella cooperi2 Carpenter 1864 turret shell
 Heterostropha - Pyramidellidae
"Iselica fenestrata" = Iselica ovoidea2
"Iselica fenestrata" = Iselica ovoidea2 Gould 1853 snail
Bivalvia
 Carditida - Carditidae
"Glans subquadrata" = Glans carpenteri2
"Glans subquadrata" = Glans carpenteri2 Lamy 1922 clam
 Carditida - Crassatellidae
 Lucinida - Thyasiridae
"Thyasira gouldi" = Thyasira flexuosa2, "Axinopsis viridus" = Axinopsida serricata2
"Thyasira gouldi" = Thyasira flexuosa2 Montagu 1803 clam
"Axinopsis viridus" = Axinopsida serricata2 Carpenter 1864 clam
 Lucinida - Lucinidae
"Lucinoma annulata" = Lucinoma annulatum2
"Lucinoma annulata" = Lucinoma annulatum2 Reeve 1850 clam
 Cardiida - Cardiidae
"Trachycardium quadrigenarium" = Dallocardia quadragenarium2
"Trachycardium quadrigenarium" = Dallocardia quadragenarium2 Conrad 1837 cockle
 Cardiida - Veneridae
"Antigona fordi" = Globivenus fordii
"Antigona fordi" = Globivenus fordii Yates 1890 venus clam
 Pectinida - Pectinoidae
"Pecten bellus" = Euvola bella, "Chlamys hastatus" = Chlamys hastata2, Chlamys jordani2
"Pecten bellus" = Euvola bella Conrad 1856 scallop
"Chlamys hastatus" = Chlamys hastata2 Sowerby 1842 scallop
ALSO: Chlamys hastatus hericeus
Chlamys jordani2 Arnold 1903 scallop
AS: Chlamys islandicus jordani
 Pectinida - Anomiidae
"Pododesmus macrochisma" = Pododesmus (Monia) macrochisma2
"Pododesmus macrochisma" = Pododesmus (Monia) macrochisma2 Deshayes 1839 scallop
 Nuculida - Nuculidae
"Acila castrensis" = Acila (Truncacila) castrensis2
"Acila castrensis" = Acila (Truncacila) castrensis2 Hinds 1843 divaricate nutclam