NMMNH 4436, Bruton Canyon, NM: Missourian, New Mexico

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Euomphalina - Euomphalidae
Euomphalus sp. Sowerby 1814
Strophomenata - Productida
Productida indet. Sarycheva and Sokolskaya 1959
Strophomenata - Productida - Productellidae
Antiquatonia sp. Miloradovich 1945
Strophomenata - Productida - Echinoconchidae
Echinaria semipunctata
Parajuresania nebraskensis
Strophomenata - Productida - Linoproductidae
Linoproductus cf. platyumbonus
Rhynchonellata - Spiriferida - Trigonotretidae
Neospirifer alatus (Dunbar and Condra 1932)
original and current combination Neospirifer triplicatus alatus
Rhynchonellata - Athyridida - Athyrididae
Composita subtilita (Hall 1852)
Crinoidea
Crinoidea indet. Miller 1821
see common names

Geography
Country:United States State/province:New Mexico County:Socorro County
Coordinates: 33.9° North, 106.3° West (view map)
Paleocoordinates:2.0° South, 38.4° West
Basis of coordinate:estimated from map
Time
Period:Carboniferous Epoch:Pennsylvanian
Stage:Kasimovian 10 m.y. bin:Carboniferous 5
Key time interval:Missourian
Age range of interval:305.90000 - 303.70000 m.y. ago
Stratigraphy
Geological group:Hansbourg Formation:Story
Stratigraphy comments: This is the general location of Thompson's (1942) type section of his Keller Group, and includes underlying strata down to his Council Springs Limestone.... In the following discussion of the Late Pennsylvanian paleontology of Bruton Canyon, fossil occurrences are related to the stratigraphic units reported by Thompson (1942; Fig. 3).
Lithology and environment
Primary lithology:coarse,gray,white "limestone"
Includes fossils?Y
Lithology description: The thick, cliff-forming unit (bed 16A) in the middle of the Story Member is a light gray to white, coarsely crystalline, micritic, bioclastic limestone containing a high density of fossils, predominantly brachiopods, many with recrystallized and/or exfoliated shells. Local concentrations of crinoid skeletal debris are also present, as are occasional specimens of fusulinids. Thompson (1942, p. 66) cited late (but not latest) Missourian Triticites from bed 16A.
Environment:carbonate indet.
Geology comments: The Upper Pennsylvanian strata in Bruton Canyon were deposited on a shallow marine shelf west of the Pedernal uplift, a long, north-south trending land mass that extended from the latitude of Albuquerque south to the Texas border (Kues and Giles, 2004).
Taphonomy
Modes of preservation:body,cast
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Collection methods:field collection
Reason for describing collection:taxonomic analysis
Collection method comments: Fossil collections were made from six intervals in Thompson's Missourian-Virgilian section here. Localities and figured specimens in this paper bear New Mexico Museum of Natural History and Science (NMMNH) numbers.
The largest and most species-rich assemblage in the Bruton Canyon section occurs in Thompson's bed 18B, a 2.5 m-thick ledge-forming limestone near the middle of the Del Cuerto Member. A collection of loose specimens was made from this limestone where it had eroded to a rubbly slope.
Metadata
Database number:215692
Authorizer:B. Seuss Enterer:B. Seuss
Modifier:B. Seuss Research group:marine invertebrate
Created:2020-11-19 07:03:11 Last modified:2022-02-18 01:28:18
Access level:the public Released:2020-11-19 07:03:11
Creative Commons license:CC BY
Reference information

Primary reference:
74335. B.S. Kues. 2009. Late Pennsylvanian invertebrate paleontology of Bruton Canyon, northern Sierra Oscura, Socorro County, New Mexico. In V. Lueth, S.G. Lucas, R.M. Chamberlain (eds.), Geology of the Chupadera Mesa 249-266 [B. Seuss/B. Seuss]