USNM 32023. Lone Mountain Area, McGrath C-4 Quadrangle (Ordovician of the United States)

Also known as Center of SW¼ NE¼ of sec. 9 T28N R30W, McGrath C-4 Quadrangle, west-central Alaksa

Where: Alaska (62.5° N, 154.8° W: paleocoordinates 62.5° N, 154.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Lone Mountain Limestone Member (Telsitna Formation), Richmond (449.5 - 445.6 Ma)

• Panderodus cf. P. gracilis & Drepanoistodus suberectus conodonts. Equated with upper Cincinnatian in the text. Note that Lone Mountain is an informal name

• group of beds-level stratigraphic resolution

Environment/lithology: limestone

Size classes: macrofossils, microfossils

Preservation: replaced with silica

Reposited in the USNM

Primary reference: D. M. Rohr and R. B. Blodgett. 1985. Upper Ordovician Gastropoda from west-central Alaska. Journal of Paleontology 59(3):667-673 [P. Wagner/P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 49341: authorized by Pete Wagner, entered by Pete Wagner on 13.04.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Tscherkidium sp.
brachiopod
Anthozoa
 Cystiphyllida - Tryplasmatidae
Tryplasma "aff. sp. Oliver in Oliver et al. 1975" Lonsdale 1845 horn coral
(USGS Prof.Paper 823-B)
 Auloporida - Tetraporellidae
Syringoporinus sp. Sokolov 1955 tabulate coral
 Heliolitida - Halysitidae
Catenipora sp. Lamarck 1816 tabulate coral
Tollina sp. Sokolov 1949 tabulate coral
 Favositida - Favositidae
Paleofavosites sp. Twenhofel 1914 tabulate coral
Mesofavosites sp. Sokolov 1951 tabulate coral
Gastropoda
 Murchisoniina - Trochonematidae
Trochonemella churkini n. sp. Rohr and Blodgett 1985 snail
Trochonema (Trochonema) aff. retrorsum Ulrich and Scofield 1897 snail
 Murchisoniina - Lophospiridae
Ectomaria cf. prisca, Gyronema sp., "Trochonema (Eunema) "sp. A"" = Eunema, "Trochonema (Eunema) "sp. B"" = Eunema, "Loxoplocus (Lophospira) cf. perangulata" = Lophospira perangulata
Ectomaria cf. prisca Billings 1859 snail
Gyronema sp. Ulrich and Scofield 1897 snail
"Trochonema (Eunema) "sp. A"" = Eunema Salter 1859 snail
"Trochonema (Eunema) "sp. B"" = Eunema Salter 1859 snail
"Loxoplocus (Lophospira) cf. perangulata" = Lophospira perangulata Hall 1847 snail
 Murchisoniina - Eotomariidae
? Pseudocryptaenia majewskwi n. sp. Rohr and Blodgett 1985 snail
Paraliospira aff. planata Rohr 1980 snail
 Bellerophontida - Temnodiscidae
"Alaskadiscus donensis n. gen. n. sp." = Alaskodiscus donensis1
"Alaskadiscus donensis n. gen. n. sp." = Alaskodiscus donensis1 Rohr et al. 2003 snail
 Euomphalina - Oriostomatidae
Oriostoma cf. angulatum Wahlenberg 1821 snail
 Euomphalina - Holopeidae
Pachystrophia cf. devexa d'Eichwald 1859 snail
 Euomphalina - Helicotomidae
Boucotspira carinifer2 Koken 1896 snail
 Euomphalina - Pseudophoridae
Pseudophorus cf. profundus Lindström 1884 snail
 Euomphalina - Macluritidae
Maclurites sp. Le Sueur 1818 snail
Conodonta
 Panderodontida - Panderodontidae
Belodina sp. Ethington 1959 conodont
 Ozarkodinida -
? Ozarkodina sp. Branson and Mehl 1933 conodont
 Protopanderodontida - Drepanoistodontidae
Drepanoistodus suberectus Branson and Mehl 1933 conodont