Where: Socorro County County, New Mexico (33.9° N, 106.3° W: paleocoordinates 2.0° S, 38.4° W)

• coordinate estimated from map

When: Story Formation (Hansbourg Group), Missourian (306.0 - 303.7 Ma)

• 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).

Environment/lithology: coarse-grained, gray, white limestone

Size classes: macrofossils, mesofossils

• The lithology of the upper part of Thompson’s bed 16A in the Story Member (locality 4436) is essentially the same as the lower part but only six species of brachiopods were collected (Table 1), and their relative abundance is quite different from that of locality 4437. In the upper fauna, larger productides are by far the most abundant brachiopods, especially Antiquatonia sp. and Linoproductus cf. platyumbonus, with a few large valves of Echinaria semipunctata also present. Composita subtilita, Neospirifer alatus, and Parajuresania nebrascensis are rare and no specimens of Hystriculina were collected. One specimen of the gastropod Euomphalus represents the only mollusc observed.

Preservation: cast

Collection methods: 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.

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 215692: authorized by Barbara Seuss, entered by Barbara Seuss on 19.11.2020

Creative Commons license: CC BY (attribution)