USNM 18130. Gregg Ranch (Ordovician of the United States)

Where: Siskyou County, California (41.4° N, 122.7° W: paleocoordinates 1.1° S, 76.8° W)

• local area-level geographic resolution

When: Kangaroo Creek Formation, Caradoc (458.4 - 449.5 Ma)

• Clasts of Caradocian age given other indicators

• bed-level stratigraphic resolution

Environment/lithology: lithified conglomerate and limestone

• Carbonate with limestone clasts

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, hydrochloric

Primary reference: D. M. Rohr. 1980. Ordovician - Devonian Gastropoda from the Klamath Mountains, California. Palaeontographica Abteilung A 171:141-199 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 69228: authorized by Pete Wagner, entered by Pete Wagner on 21.02.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Strophomenida - Bimuriidae
Bimuria "sp. 2"1
Bimuria "sp. 2"1 Ulrich and Cooper 1942
Gastropoda
 Bellerophontida - Bucaniidae
? Megalomphala sp., ? Megalomphala contorta
? Megalomphala sp. Ulrich and Scofield 1897 snail
? Megalomphala contorta d'Eichwald 1856 snail
 Euomphalina - Macluritidae
Maclurites sp.
Maclurites sp. Le Sueur 1818 snail
 Euomphalina - Platyceratidae
Cyclonema (Cyclonema) sp.
 Euomphalina - Helicotomidae
Ophiletina aff. sublaxa, Helicotoma griffinorum
Ophiletina aff. sublaxa Ulrich and Scofield 1897 snail
Helicotoma griffinorum Rohr 1980 snail
 Euomphalina - Holopeidae
? Pachystrophia cf. devexa
? Pachystrophia cf. devexa d'Eichwald 1859 snail
 Euomphalina - Euomphalidae
"Ellisella greggi n. gen. n. sp." = Linsleyella greggi, Linsleyella johnsoni
"Ellisella greggi n. gen. n. sp." = Linsleyella greggi Rohr 1980 snail
Linsleyella johnsoni Rohr 1980 snail
 Murchisoniina - Eotomariidae
Paraliospira gradata, Paraliospira angulata, Paraliospira planata n. sp., "Liospira helena" = Paraliospira helena, Paraliospira mundula, Liospira modesta
Paraliospira gradata Rohr 1980 snail
Paraliospira angulata Ulrich and Scofield 1897 snail
Paraliospira planata n. sp. Rohr 1980 snail
"Liospira helena" = Paraliospira helena Billings 1860 snail
Paraliospira mundula Ulrich and Scofield 1897 snail
Liospira modesta Ulrich and Scofield 1897 snail
 Murchisoniina - Lophospiridae
"Murchisonia (Murchisonia) callahanensis n. sp." = Ectomaria callahanensis, Ectomaria prisca, Donaldiella cf. derwiduii2, "Loxoplocus (Lophospira) cf. procera" = Lophospira milleri, "Loxoplocus (Lophospira) perangulata" = Lophospira perangulata
"Murchisonia (Murchisonia) callahanensis n. sp." = Ectomaria callahanensis Rohr 1980 snail
Ectomaria prisca Billings 1859 snail
Donaldiella cf. derwiduii2 Grabau 1922 snail
"Loxoplocus (Lophospira) cf. procera" = Lophospira milleri Miller 1877 snail
"Loxoplocus (Lophospira) perangulata" = Lophospira perangulata Hall 1847 snail
1Potter 1990; 2Wagner 2023