Panoche-Dos Palos Road (Paleocene of the United States)

Also known as UCMP locality V7060, UCMP locality A-1283, A-8394, A-4657, A-9717; LSJU locality 2073, CAS loc. 61666; LACMIP loc. 7044.

Where: Fresno County, California (36.6° N, 120.7° W: paleocoordinates 40.5° N, 101.0° W)

• coordinate stated in text

When: Ynezian foram zone, Lodo Formation, Thanetian (59.2 - 56.0 Ma)

• Basal Lodo Formation; Thanetian.

• bed-level stratigraphic resolution

Environment/lithology: marine; marl

• 15 cm thick, medium-grained, poorly to well indurated, light brown glauconitic marl bed

Size classes: macrofossils, mesofossils

Collected by C. E. Weaver in 1949; reposited in the CAS, LACM, UCMP

• some collections made by screen-washing

Primary reference: B. J. Welton. 1974. Preliminary note on the Paleocene elasmobranchs of the Lodo Formation, Fresno County, California. The Paleogene of the Panoche Creek-Cantua Creek Area, Central California, Fall Field Trip Guidebook, Pacific Section, SEPM (Society for Sedimentary Geology) 91-97 [P. Holroyd/P. Holroyd]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 189952: authorized by Patricia Holroyd, entered by Patricia Holroyd on 21.11.2017, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• molluscs reported to be present, described by White 1940
Chondrichthyes
 Rajiformes - Platyrhinidae
 Carcharhiniformes - Triakidae
cf. Triakis sp. Müller and Henle 1838 hound shark
cf. Mustelus sp. hound shark
 Euselachii -
Orectolobiformes indet. Applegate 1972 carpet shark
 Lamniformes - Odontaspididae
Odontaspis cf. tingitana sand tiger shark
Odontaspis cf. whitei sand tiger shark
 Lamniformes - Otodontidae
"Lamna cf. appendiculata" = Cretalamna appendiculata
"Lamna cf. appendiculata" = Cretalamna appendiculata Agassiz 1835 mackerel shark
 Hexanchiformes - Hexanchidae
Hexanchus cf. microdon Agassiz 1835 sixgill shark
 Heterodontiformes - Heterodontidae
Heterodontus sp. de Blainville 1816 bullhead shark
 Squaliformes - Squalidae
Squalus sp. Linnaeus 1758 dogfish shark
 Squaliformes - Dalatiidae
Isistius cf. trituratus Winkler 1874 shark
 Squaliformes - Centrophoridae
Centrophorus sp. Müller and Henle 1837 gulper shark
 Squatiniformes - Squatinidae
Squatina sp. Dumeril 1806 angel shark
 Euselachii - Pliotremidae
Pliotrema sp. elasmobranch
Bivalvia
 Arcida - Glycymerididae
Glycymerita major5 Stanton 1896 clam
 Carditida - Carditidae
Venericardia (Pacificor) mulleri n. sp.6, "Venericardia (Glyptoactis) keenae n. sp." = Glyptoactis (Claibornicardia) keenae6, "Venericardia (Pacificor) argentea n. sp." = Glyptoactis (Claibornicardia) keenae6
Venericardia (Pacificor) mulleri n. sp.6 Verástegui 1953 clam
"Venericardia (Glyptoactis) keenae n. sp." = Glyptoactis (Claibornicardia) keenae6 Verástegui 1953 clam
"Venericardia (Pacificor) argentea n. sp." = Glyptoactis (Claibornicardia) keenae6 Verástegui 1953 clam
Gastropoda
 Sorbeoconcha - Cypraeidae
Cypraeidae indet.1 Rafinesque 1815 cowry
 Sorbeoconcha - Eocypraeidae
Eocypraea sp.1 Cossmann 1903 snail
 Neogastropoda - Buccinidae
Brachysphingus mammilatus4 Clark and Woodford 1927 true whelk
Brachysphingus sinuatus4 Gabb 1869 true whelk
Brachysphingus gibbosus4 Nelson 1925 true whelk
 Neogastropoda - Melongenidae
Protobusycon judithae3 Saul 1988 snail
 Neogastropoda - Tudiclidae
? Heteroterma acrita2 Saul 1988 snail