Harding Formation (Ordovician of the United States)
Where: Colorado (38.0° N, 105.0° W: paleocoordinates 14.9° S, 74.0° W)
• local area-level geographic resolution
When: Harding Formation, Caradoc (458.4 - 449.5 Ma)
• formation-level stratigraphic resolution
Environment/lithology: marine; sandstone and shale
• Sandstone: medium- and fine-grained, platy weathering, pinkish-white and greenish-white, slightly silty and argillaceous.
Shale: finely laminated, green, brown, maroon, silty, sandy, abundant fossils, waxy.
Shale: finely laminated, green, brown, maroon, silty, sandy, abundant fossils, waxy.
Primary reference: W. C. Sweet. 1954. Harding and Fremont Formations, Colorado. Bulletin of the American Association of Petroleum Geologists 38(2):284-305 [S. Holland/T. Hanson]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 10380: authorized by Steven Holland, entered by Tori Hanson on 11.04.2001, edited by Steven Holland and Austin Hendy
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Conodonta | |
Chirognathus admiranda, Chirognathus aequidentata, Chirognathus alternata, Chirognathus deformis, Chirognathus delicatula, Chirognathus dubia, Chirognathus duodactyla, Chirognathus eucharis, Chirognathus gradata, Chirognathus idonea, Chirognathus maniformis, Chirognathus monodactyla, Chirognathus multidens, Chirognathus parallela, Chirognathus plana, Chirognathus tenuidentata, Chirognathus unguliformis, Chirognathus vulgaris, Chirognathus sp.
Chirognathus admiranda conodont
Chirognathus aequidentata conodont
Chirognathus alternata conodont
Chirognathus deformis conodont
Chirognathus delicatula conodont
Chirognathus dubia conodont
Chirognathus duodactyla conodont
Chirognathus eucharis conodont
Chirognathus gradata conodont
Chirognathus idonea conodont
Chirognathus maniformis conodont
Chirognathus monodactyla conodont
Chirognathus multidens conodont
Chirognathus parallela conodont
Chirognathus plana conodont
Chirognathus tenuidentata conodont
Chirognathus unguliformis conodont
Chirognathus vulgaris conodont
Chirognathus sp. conodont | |
|
Amorphognathus ramosa conodont | |
| unclassified | |
|
Vertebrata indet. Lamarck 1801 | |
| Pteraspidomorpha | |
|
Eriptychius americanus Walcott 1892 | |
"Astraspis desiderata" = Astraspis desiderata, "Astraspis splendens" = Astraspis desiderata
"Astraspis desiderata" = Astraspis desiderata Walcott 1892
"Astraspis splendens" = Astraspis desiderata Walcott 1892 | |
| Lingulata | |
"Lingula huronensis" = Lingulella huronensis, "Lingula hurlbuti" = Lingula (Palaeoglossa) hurlbuti
"Lingula huronensis" = Lingulella huronensis Billings 1859
"Lingula hurlbuti" = Lingula (Palaeoglossa) hurlbuti Winchell 1880 | |
| Cephalopoda | |
|
Kionoceras sp. Hyatt 1884 | |
|
? Ormoceras sp. Stokes 1840 | |
| Gastropoda | |
|
Liospira sp. Ulrich and Scofield 1897 snail | |
"Ecculiomphalus contiguus" = Pachystrophia contiguus
"Ecculiomphalus contiguus" = Pachystrophia contiguus Ulrich and Scofield 1897 snail | |
| Bivalvia | |
|
Ctenodonta spp. Salter 1852 clam | |
|
Vanuxemia rotundata clam
Cyrtodonta sp. Billings 1858 clam | |
|
Modiolopsis spp. Hall 1847 clam
Orthodesma sp. Hall and Whitfield 1875 clam | |
| Trilobita | |
|
Toernquistia sp. Reed 1896 trilobite | |
|
Isalaux canyonensis Frederickson and Pollack 1952 trilobite | |
| Dictyorhabdus priscus | |
|
Dictyorhabdus priscus Walcott 1891 | |