Hilltop Quarry (1930s-1950s) [Lomita Marl] (Pleistocene of the United States)

Where: Los Angeles County, California (33.8° N, 118.3° W: paleocoordinates 33.8° N, 118.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• LITHOSTRATIGRAPHY: From the Lomita Marl, which is locally overlain by the Timms Point Silt and San Pedro Sand. AGE: Early Pleistocene in Woodring et al. (1946) and Valentine PhD, but is now regarded as Middle Pleistocene [A. Hendy]. STRATIGRAPHIC POSITION: List is representation of formation at this section.

• formation-level stratigraphic resolution

Environment/lithology: offshore; unlithified, sandy, calcareous marl

• ENVIRONMENT: Typically containing and offshore fauna.
• SPECIFIC LITHOLOGY: Not listed, but generally a calcareous sandy marl. LITHIFICATION: Not stated, but typically unlithified to slightly poorly-lithified.

Size classes: macrofossils, mesofossils

Preservation: original aragonite, original calcite

Collected by S. Berry, E. P. Chace, & R. Cross; reposited in the CAS

• COLLECTOR: S. Berry and other collectors; multiple collecting events. REPOSITORY: Likely to be at CAS; former Stanford collections.

Primary reference: S. S. Berry. 1940. New Mollusca from the Pleistocene of San Pedro, California - I. Bulletins of American Paleontology 25(94A):1-16 [A. Hendy/A. Hendy]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 203118: authorized by Austin Hendy, entered by Austin Hendy on 27.07.2019, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to a few taxa described within publication. NOMENCLATURE: Original identifications by S. Berry.
Gastropoda
 Sorbeoconcha - Procerithiidae
"Bittium rugatum" = Lirobittium rugatum5, "Bittium purpureum" = Lirobittium purpureum5, "Bittium asperum" = Lirobittium asperum5, "Bittium attenuatum" = Lirobittium attenuatum5, "Bittium catalinensis" = Lirobittium catalinensis5, "Bittium larum" = Lirobittium larum5, "Bittium armillatum" = Lirobittium armillatum5
"Bittium rugatum" = Lirobittium rugatum5 Carpenter 1866 snail
"Bittium purpureum" = Lirobittium purpureum5 Carpenter 1864 snail
"Bittium asperum" = Lirobittium asperum5 Gabb 1861 snail
"Bittium attenuatum" = Lirobittium attenuatum5 Carpenter 1864 snail
"Bittium catalinensis" = Lirobittium catalinensis5 Bartsch 1907 snail
AS: Bittium armillatum catalinensis
"Bittium larum" = Lirobittium larum5 Bartsch 1911 snail
AS: Bittium rugatum larum
"Bittium armillatum" = Lirobittium armillatum5 Carpenter 1864 snail
 Sorbeoconcha - Skeneopsidae
"Skenea cyclostoma n. sp." = Skeneopsis smithi1
"Skenea cyclostoma n. sp." = Skeneopsis smithi1 Bartsch 1927 periwinkle
 Sorbeoconcha - Barleeiidae
"Diala marmorea" = Pseudodiala acuta5
"Diala marmorea" = Pseudodiala acuta5 Carpenter 1864 snail
 Sorbeoconcha - Rissoidae
"Alvania compacta" = Actonia compacta5
"Alvania compacta" = Actonia compacta5 Carpenter 1864 snail
 Sorbeoconcha - Caecidae
"Fartulum occidentale" = Fartulum dextroversum5
"Fartulum occidentale" = Fartulum dextroversum5 Carpenter 1857 snail
 Sorbeoconcha - Vermetidae
"Aletes squamigerus" = Thylacodes squamigerus5
"Aletes squamigerus" = Thylacodes squamigerus5 Carpenter 1857 worm shell
 Neogastropoda - Turridae
"Moniliopsis chacei n. sp." = Ophiodermella cancellata1
"Moniliopsis chacei n. sp." = Ophiodermella cancellata1 Carpenter 1864 turrid
 Neogastropoda - Conidae
"Oenopota turrispira n. sp." = Propebela turrispira1
"Oenopota turrispira n. sp." = Propebela turrispira1 Berry 1941 cone shell
 Neogastropoda - Clathurellidae
"Clathurella (Glyphostoma) tridesmia n. sp." = Crockerella tridesmia1, "Clathurella conradiana" = Crockerella conradiana5
"Clathurella (Glyphostoma) tridesmia n. sp." = Crockerella tridesmia1 Berry 1941 snail
"Clathurella conradiana" = Crockerella conradiana5 Gabb 1866 snail
 Neogastropoda - Strictispiridae
"Clavus (Crassispira) zizyphus n. sp." = Strictispira zizyphus
"Clavus (Crassispira) zizyphus n. sp." = Strictispira zizyphus Berry 1940 snail
 Neogastropoda -
"Mitromorpha galeana n. sp." = Cymakra galeana1, "Mitromorpha barbarensis" = Cymakra gracilior1, "Harfordia monkseae" = Harfordia robusta5
"Mitromorpha galeana n. sp." = Cymakra galeana1 Berry 1941 snail
"Mitromorpha barbarensis" = Cymakra gracilior1 Tryon 1884 snail
SUBSPECIES: Mitromorpha barbarensis woodfordi n. subsp
"Harfordia monkseae" = Harfordia robusta5 Trask 1855 snail
 Vanikoroidea - Eulimidae
"Balcis rutila" = Polygireulima rutila5, "Balcis thersites" = Melanella thersites4, "Balcis (Vitreolina) ebriconus" = Melanella thersites4, "Balcis (Vitreolina) incallida" = Melanella thersites4, Balcis micans4, "Balcis (Balcis) tersa" = Balcis tersa4, "Balcis oldroydi" = Balcis oldroydae5, "Balcis (Vitreolina) obstipa" = Vitreolina macra4, "Balcis prefalcata" = Vitreolina macra4
"Balcis rutila" = Polygireulima rutila5 Carpenter 1864 snail
"Balcis thersites" = Melanella thersites4 Carpenter 1864 snail
"Balcis (Vitreolina) ebriconus" = Melanella thersites4 Carpenter 1864 snail
"Balcis (Vitreolina) incallida" = Melanella thersites4 Carpenter 1864 snail
Balcis micans4 Carpenter 1864 snail
"Balcis (Balcis) tersa" = Balcis tersa4 Berry 1954 snail
"Balcis oldroydi" = Balcis oldroydae5 Bartsch 1917 snail
"Balcis (Vitreolina) obstipa" = Vitreolina macra4 Bartsch 1917 snail
"Balcis prefalcata" = Vitreolina macra4 Bartsch 1917 snail
 Pseudomelanoidea - Pseudomelaniidae
Antiplanes macfarlandi n. sp.2 Berry 1947 snail
 Cerithioidea - Cerithiidae
Elassum californicum5 Dall and Bartsch 1901 cerith snail
 Cerithioidea - Turritellidae
Turritella pedroensis5 Applin 1920 turret shell
 Epitonioidea - Epitoniidae
Epitonium indianorum5 Carpenter 1864 wentletrap
Opalia montereyensis3 Dall 1907 wentletrap
"Alabina effiae" = Acirsella effiae7 Willett 1939 wentletrap
 Heterostropha - Ringiculidae
"Actaeon (Microglyphis) schencki n. sp." = Microglyphis breviculus1
"Actaeon (Microglyphis) schencki n. sp." = Microglyphis breviculus1 Dall 1902 snail
 Heterostropha - Pyramidellidae
"Iselica fenestrata" = Iselica ovoidea5
"Iselica fenestrata" = Iselica ovoidea5 Gould 1853 snail
 Trochoidea - Trochidae
"Margarites (Lirularia) aresta n. sp." = Lirularia aresta1, Calliostoma grantianum n. sp.
"Margarites (Lirularia) aresta n. sp." = Lirularia aresta1 Berry 1941 top snail
Calliostoma grantianum n. sp. Berry 1940 top snail
 Trochoidea - Turbinidae
"Astraea (Pomaulax) petrothauma n. sp." = Megastraea turbanica
"Astraea (Pomaulax) petrothauma n. sp." = Megastraea turbanica Dall 1900 snail
 Opisthobranchia -
Mistostigma punctulum2 Berry 1947 snail
 Patellida - Lottiidae
"Acmaea depicta" = Lottia depicta5, "Acmaea lepisma n. sp." = Lottia depicta
"Acmaea depicta" = Lottia depicta5 Hinds 1842 limpet
"Acmaea lepisma n. sp." = Lottia depicta Hinds 1842 limpet
Bivalvia
 Pectinida - Pectinoidae
Chlamys hastata5, "Pecten diegensis" = Leopecten diegensis5
Chlamys hastata5 Sowerby 1842 scallop
SUBSPECIES: Chlamys hastata hericeus
"Pecten diegensis" = Leopecten diegensis5 Dall 1898 scallop
 Arcida - Glycymerididae
"Glycymeris profunda" = Glycymeris septentrionalis8
"Glycymeris profunda" = Glycymeris septentrionalis8 Middendorf 1849 clam
 Arcida - Arcidae
Arca (Arca) sisquocensis6 Reinhart 1937 ark
 Lucinida - Thyasiridae
Adontorhina cyclia n. sp.2 Berry 1947 clam
 Poromyida - Cuspidariidae
Cardiomya pectinata5 Carpenter 1864 clam
 Nuculanida - Nuculanidae
"Nuculana taphria" = Saccella taphria5
"Nuculana taphria" = Saccella taphria5 Dall 1896 pointed nut clam