Mountain Lake Mbr. of the Bromide Fm. at Buckhorn Ranch S. of Sulphur, OK (Ordovician of the United States)

Where: Murray County, Oklahoma (34.4° N, 97.0° W: paleocoordinates 22.0° S, 75.3° W)

• coordinate based on political unit

• local area-level geographic resolution

When: Mountain Lake Member (Bromide Formation), Costonian (460.9 - 457.5 Ma)

• deepening upward succession

• member-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; limestone and shale

Preservation: original calcite

Collection methods: quarrying,

Primary reference: D. M. Rohr and R. A. Johns. 1990. First occurence of Oriostoma (Gastropoda) from the Middle Ordovician. Journal of Paleontology 64(5):732-735 [A. Miller/R. Krause/R. Krause]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13815: authorized by Arnold Miller, entered by Rich Krause on 29.04.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Murchisoniina - Lophospiridae
Gyronema sp. Ulrich and Scofield 1897 snail
Lophospira sp. Whitfield 1886 snail
 Murchisoniina - Eotomariidae
Liospira sp. Ulrich and Scofield 1897 snail
Eotomaria sp. Ulrich and Scofield 1897 snail
 Bellerophontida -
"Bellerophontacea "indet. spp."" = Bellerophontoidea
"Bellerophontacea "indet. spp."" = Bellerophontoidea M'Coy 1851 snail
 Euomphalina - Holopeidae
? Holopea sp. Hall 1847 snail
 Euomphalina - Raphistomatidae
Raphistoma sp. Hall 1847 snail
 Euomphalina - Ophiletidae
? Ecculiomphalus sp. Portlock 1843 snail
 Euomphalina - Platyceratidae
Cyclonema sp. Hall 1852 snail
 Euomphalina - Macluritidae
Maclurites sp. Le Sueur 1818 snail
 Rhombifera - Glyptocystitidae
Strabocystis fayi n. gen. n. sp.
Strabocystis fayi n. gen. n. sp. Sprinkle 1982
Upper part of member