Cisco forams, general occurrences (Carboniferous of the United States)
Where: Texas (32.9° N, 99.4° W: paleocoordinates 5.4° S, 33.4° W)
When: Cisco Group, Virgilian (303.7 - 298.9 Ma)
Environment/lithology: offshore; shale
• specimens largely derive from shales, a few from marls or limestones
Size class: microfossils
• large portion of the foraminifera of the Cisco are of simple arenaceous type; exceptions are those imperforate calcareous specimens (Miliolidae, Ophthalmidiidae, one type of Glyphostomella); no Rotaliidae are present, whole fauna is decidedly primitive
Primary reference: J.A. Cushman and J.A. Waters. 1930. Foraminifera of the Cisco Group of Texas. The University of Texas, Bulletin 3019:22--81 [B. Seuss/B. Seuss/B. Seuss]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 217237: authorized by Barbara Seuss, entered by Barbara Seuss on 01.02.2021
Creative Commons license: CC BY (attribution)
Taxonomic list
Show authors, comments, and common names
| Rhodophyceae | |
|
| |
| Foraminifera | |
Placopsilina ciscoensis n. sp.
Placopsilina ciscoensis n. sp. holotype (Cushman Coll. No. 13150) from the Graham formation of the Cisco from 5 feet above the Gunsight limestone, Graham, Young County
| |
|
Reophax asper from shale 20 feet below the Bunger limestone, Young County, Texas; it is also known to occur below the Bunger limestone about 14.7 miles north of Ranger, Stephens County, Texas
| |
Ammodiscoides conica, Glomospira spinosa, Glomospira reversa n. sp., Glomospira diversa n. sp., Glomospira simplex, Tolypammina delicatula
Ammodiscoides conica from the Wayland shale member of the Graham formation of the Cisco, 5 feet above the Gunsight limestone on Salt Creek west of Graham, Young County
Glomospira spinosa Wayland shale member of the Graham formation of the Cisco, 5 feet above the Gunsight limestone on Salt Creek west of Graham, Young County
Glomospira reversa n. sp. holotype (Cushman Coll. No. 9144) from the Gaptank formation at Wolf Camp, Brewster County
Glomospira diversa n. sp. holotype (Cushman Coll. No. 9146) from the Harpersville formation of the Cisco, just below the Saddle Creek limestone, about 6 miles northwest of Breckenridge, Stephens County
Glomospira simplex species occurs in the Cisco particularly below the Bunger limestone, about 14.7 miles north of Ranger, on the Caddo road, Stephens County; it occurs on the Wayland shale 5 feet above the Gunsight limestone on Salt Creek west of Graham, Young County
Tolypammina delicatula types of this species are from the Wayland shale member of the Graham formation of the Cisco, 5 feet above the Gunsight limestone on Salt Creek west of Graham, Young County, where they are attached to shell fragments
| |
|
Hyperammina glabra figured specimens are from the South Bend shale of the Graham formation of the Cisco, 1 foot below the Gunsight limestone, 1 mile west of Graham, Young County, Texas
Hyperammina bulbosa figured specimen is from the Graham formation below the Gunsight limestone, south of Cross Plains, Texas, on the Brownwood road; this species is also found in the Graham formation 7 miles northeast of Trickham, in Coleman County, Texas
| |
|
Hyperamminoides elegans types of this species are from the Graham formation, below the Bunger limestone, 14.7 miles north of Ranger, on the Caddo road, Stephens County, Texas
Hyperamminoides glabra Cushman and Waters 1927 common at the type locality in the Graham formation of the Cisco group, from a calcareous shale 6 inches below the Gunsight limestone on Salt Creek west of Graham, Young County
| |
|
Trochammina grahamensis n. sp. holotype (Cushman Coll. No. 9163) from the South Bend shale member of the Graham formation of the Cisco, 2 feet 6 inches below the Gunsight limestone on Salt Creek west of Graham, Young County
Trochammina arenosa in the Cisco very similar forms occur in abundance at various places in the section; South Bend shale of the Graham formation of the Cisco, 2 feet 6 inches below the Gunsight limestone on Salt Creek west of Graham, Young County; shale below Bunger limestone, about 14.7 miles north of Ranger on the Caddo road, Stephens County; Harpersville formation of the Cisco, below the Saddle Creek limestone, 6 miles northwest of Breckenridge, Stephens County
| |
| Tubothalamea | |
|
Ammovertella inclusa type locality for this species is the Couth Bend shale of the Graham formation of the Cisco, 1 foot below the Gunsight limestone on Salt Creek west of Graham, Young County
| |
|
Agathammina protea species occurring the upper portion of the Cisco in the Dothan limestone of the Moran formation at a depth of 490 feet, Farmers Ranch, Archer County, Texas
| |
Cornuspira thompsoni, "Ammodiscus semiconstrictus" = Cornuspira semiconstrictus, Hemigordius harltoni, Orthovertella protea, Apterrinella grahamensis, Plummerinella complexa, Calcitornella elongata, Calcitornella heathi, Calcivertella adherens
Cornuspira thompsoni occurs in the Dothan limestone of the Moran formation of the Cisco in a core at 460 feet, Farmers Ranch, Archer County, Texas
"Ammodiscus semiconstrictus" = Cornuspira semiconstrictus Waters 1927 var. regularis; in the Wayland shale member of the Graham formation of the Cisco, 5 feet above the Gunsight limestone on Salt Creek west of Graham, Young County; 3.2 miles south of Jacksboro, Jack County (west of viaduct); 7 miles northeast of Trickham on the Brownwood road, Coleman County; in the Gaptank formation at Wolf Camp, Brewster County, Texas; in the top of the Wolf Camp formation 5 1/2 miles east of Hess ranch in Brewster County
Hemigordius harltoni originally described from the Graham formation of the Cisco, 3.2 miles south of Jacksboro, Jack County
Orthovertella protea types of this species came from the Dothan limestone of the Moran formation of the Cisco, from drill core at 460 feet, Farmers Ranch, Archer County, Texas; it occurs widely distributed in the Cisco
Apterrinella grahamensis types of this species came from the Graham formation of the Cisco "at cut in Rock Island R. R. at Perrin road crossway, 3 miles southeast of Jacksboro, Jack County; also abundantly found in the Dothan limestone of the upper Cisco at Farmers Ranch, Archer County, Texas where it often nearly covers shells of Myalina
Plummerinella complexa types of this species are from the Wayland shale member of the Graham formation of the Cisco, 5 feet above the Gunsight limestone on Salt Creel west of Graham, Young County
Calcitornella elongata types of this species are from the South Bend shale of the Graham formation of the Cisco, 6 inches below the Gunsight limestone, on Salt Creek west of Graham, Young County; also common in the dothan limestone of the Moran formation of the Cisco
Calcitornella heathi types of this species are from the Wayland shale of the Graham formation of the Cisco, 5 feet above the Gunsight limestone, on Salt Creek west of Graham, Young County
Calcivertella adherens type of this species is from the Bunger limestone member of the Graham formation of the Cisco, 3.2 miles northeast of South Bend, Young County
| |
| Foraminifera | |
|
Tetrataxis conica in some parts of the Graham formation of the Cisco this species is well developed, especially in the Bunger limestone, 3.2. miles northeast of South Bend, Young County
Tetrataxis corona types of this species are from the Wayland shale member of the Graham formation, 5 feet above the Gunsight limestone, on Salt Creek, 1 mile west of Graham, Young County; species occurs as high as Camp Colorado limestone of the Pueblo formation, 1 1/2 miles northeast of Camp Colorado, Coleman County
Tetrataxis scutella types of this species are from the South Bend shale member of the Graham formation, 1 foot below the Gunsight limestone, on Salt Creek 1 mile west of Graham, Young County
| |
|
Endothyra media in the lower Cisco particularly, some specimens are very close to the Canyon form, and it seems best, for the present at least, to place them under the same name
Endothyra pauciloculata n. sp. holotype (Cushman Coll. 9148) from the Wayland shale of the Graham formation, 20 feet above the Gunsight limestone, 1/2 mile south of Gunsight, Stephens County; species occurs in other parts of the Cisco
| |
|
Deckerella laheei types of this species are from the Graham formation of the Cisco from 10 miles northeast of Breckenridge, Stephens County. It occurs also in the Wayland shale member of the Graham formation 5 feet above the Gunsight limestone, on Salt Creek west of Graham, Young County
Climacammina cylindrica types of this species are from the Graham formation of the Cisco, on Salt Creek 1 mile west of Graham, Young County; specimens also occurred in the Graham formation 10 miles northeast of Breckenridge, on the South Bend road, Stephens County
"Textularia grahamensis" = Palaeotextularia grahamensis Cushman and Waters 1927 types of this species are from the Gunsight limestone member of the Graham formation of the Cisco on Salt Creek west of Graham, Young County, Texas
| |
Globivalvulina biserialis, Globivalvulina ovata, Globivalvulina gaptankensis, Globivalvulina bulloides
Globivalvulina biserialis types of this species are from the Bunger limestone member of the Graham formation of the Cisco, 3.2 miles northeast of South Bend, Young County, Texas
Globivalvulina ovata types of this species are from the South Bend shale member of the Graham formation of the Cisco, 1 foot below the Gunsight limestone on Salt Creek, 1 mile west of Graham, Young County
Globivalvulina gaptankensis figured specimen is from the Gaptank formation at Wolf Camp, Brewster County
Globivalvulina bulloides Brady 1876 figured specimen is from the Camp Colorado limestone of the Pueblo formation of the Cisco , about 1 1/2 miles northeast of Camp Colorado, Coleman County
| |
|
Nodosinella glennensis Harlton 1927 from the Wayland shales, 20 feet above the Gunsight limestone on Salt Creek west of Grahem, Young County
| |
|
Geinitzina ciscoensis types of this species are from the Pueblo formation of the upper Cisco, taken from the Camp Colorado limestone, about 1 1/2 miles northeast of the Camp Colorado, Coleman County
| |
|
| |
|
Polytaxis multiloculata type locality for this species is from the Breckenridge limestone of the Thrifty formation, 1 mile south of Breckenridge, Stephens County
Glyphostomella triloculina type locality for this species is the South Bend shale member of the Graham formation, from 1 foot below the Gunsight limestone, on Salt Creek 1 mile west of Graham, Young County; common and well developed there
| |
Ammobaculites stenomeca, Ammobaculites spirans, Ammobaculites recta, Ammobaculites powersi, Textularia eximia, Bigenerina ciscoensis
Ammobaculites stenomeca from the South Bend shale of the Graham formation of the Cisco, 1 foot below the Gunsight limestone on Salt Creel west of Graham, Young County
Ammobaculites spirans species occurs in typical form in the lower Cisco, 7 miles northeast of Trickham, Coleman County
Ammobaculites recta in the Cisco at several stations in company with A. powersi, and it is suspected that the two are the same species, A. recta being the megalosphere form and A. powersi the microspheric form
Ammobaculites powersi occurs abundantly in some parts of the Cisco and is well developed above and below the Gunsight limestone on Salt Creek west of Graham, Young County, and in the Graham formation, 10 miles northeast of Breckenridge, Stephens County
Textularia eximia from Harpersville formation, found in sandy shale of the New Castle coal, Hardy Coal Mine, New Castle, Texas, and from the South Bend shale member of the Graham formation, 2 feet 6 inches below the Gunsight limestone on Salt Creek west of Graham, Young County
Bigenerina ciscoensis Cushman and Waters 1928 species is from a sandy lignitic shale of the South Bend member of the Graham formation 2 1/2 feet below the Gunsight limestone, on Salt Creek west of Graham, Young County
| |
|
Spiroplectammina clavata described from the South Bend shale member of the Graham formation of the Cisco, 6 inches below the Gunsight limestone on Salt Creek 1 mile west of Graham, Young County
Spiroplectammina castensis types of this species are from the Camp Colorado limestone member of the Pueblo formation of the Cisco about 1 1/2 miles northeast of Camp Colorado, Coleman County
| |