3rd Street tunnel (Pliocene of the United States)

Also known as Third Street Tunnel

Where: Los Angeles County, California (34.1° N, 118.3° W: paleocoordinates 33.8° N, 117.0° W)

• coordinate estimated from map

When: Fernando Formation, Early/Lower Pliocene (5.3 - 3.6 Ma)

• age from Smith, 2011; originally late Miocene or early Pliocene, probably the former

Environment/lithology: coastal; gray, blue, argillaceous shale

• bluish-gray clayey shale

Size class: macrofossils

Collected in 1913; reposited in the LACM, USNM

• ... Homer Hamlin, city engineer of Los Angeles, California, to whom we are indebted for preserving the valuable paleontological material taken out of the Third Street tunnel, Los Angeles.

Primary reference: F. A. Lucas. 1901. A flightless auk, Mancalla californiensis, from the Miocene of California. Proceedings of the US National Museum 24(1245):133-134 [M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 120822: authorized by Mark Uhen, entered by Mark Uhen on 22.11.2011, edited by Samantha Yost and Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

 Decapoda - Ocypodidae
Uca hamlini4 Rathbun 1926 fiddler crab
Bivalvia indet.6 Linnaeus 1758 clam
 Arcida - Arcidae
 Pectinida - Pectinoidae
"Lyropecten cerrosensis" = Nodipecten cerrosensis6, "Hyalopecten aff. randolphi" = Ciclopecten6
"Lyropecten cerrosensis" = Nodipecten cerrosensis6 Gabb 1869 scallop
"Hyalopecten aff. randolphi" = Ciclopecten6 scallop
 Pectinida - Limidae
"Lima hamlini n. sp." = Acesta (Acesta) hamlini2
"Lima hamlini n. sp." = Acesta (Acesta) hamlini2 Dall 1900 file clam
 Ostreida - Ostreidae
"Ostrea vespertina" = Dendostrea vespertina6
"Ostrea vespertina" = Dendostrea vespertina6 Conrad 1854 oyster
 Carditida - Crassatellidae
"Crassatellites sp." = Crassatella5
"Crassatellites sp." = Crassatella5 Lamarck 1799 clam
 Cardiida - Vesicomyidae
"Phreagena lasia n. gen. n. sp." = Vesicomya (Calyptogena)6
"Phreagena lasia n. gen. n. sp." = Vesicomya (Calyptogena)6 clam
"Carditoid sp."
 Neogastropoda - Buccinidae
? Plicifusus sp.6 Dall 1902 true whelk
? Buccinum sp.6 Linnaeus 1758 true whelk
Nassa hamlini n. sp.1 Arnold 1907 true whelk
 Naticoidea - Naticidae
Naticidae indet.6 Guilding 1834 moon snail
 Tonnoidea - Ranellidae
Fusitriton aff. oregonensis6 Redfield 1846 triton shell
as Priene oregonensis var. angelensis new variety
 Elopiformes - Elopidae
Ectasis proriger n. gen. n. sp.3
Ectasis proriger n. gen. n. sp.3 Jordan and Gilbert 1919
 Charadriiformes - Panalcidae
Mancalla californiensis n. sp. Lucas 1901 auk
probably "bird bones" of Arnold 1907
 Scleractinia - Caryophylliidae
? Stephanocyathus sp.6 Seguenza 1864 stony coral