USNM9258, Sierra Los Cuchumatanes (FS-67-G-7) (Permian of Guatemala)

Where: Huehuetenango, Guatemala (15.6° N, 91.6° W: paleocoordinates 15.6° N, 91.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Upper Shaly Member (Chochal Formation), Kungurian (279.3 - 272.3 Ma)

• Ammonoid, fusulinid, and brachiopod correlations suggest similarity to "Leonard" of West Texas, specifically Skinner Ranch, Cathedral Mountain, and Road Canyon (Artinskian-Roadian). Collected from a limestone bed in the lower part of the shaly beds, about 50 m above the main limestone body of the Chochal Formation.

• bed-level stratigraphic resolution

Environment/lithology: marine; shelly/skeletal, black, gray, silty limestone

• Lithology description reminiscent of slope lithologies of Road Canyon Formation.
• Consists primarily of thin-bedded, dark gray to black calcilutite but occasional thicker beds contain significant amounts of bioclastic debris and quartz silt though they are still very dark in color. Strongly deformed and often tightly folded.

Size class: macrofossils

Preservation: replaced with silica

Collection methods: bulk, chemical,

• Several hundred pounds of limestone collected from both localities. Also includes verbeekinid fusulinids, trilobites, durhaminid and lophophyllid corals, ammonites, Mizzia, fish teeth, and fragments of vascular plants. It is not specified which of the two localities (USNM9257 or 9258) these occur at.

Primary reference: F.G. Stehli and R. E. Grant. 1970. Permian brachiopods from Huehuetenango, Guatemala. Journal of Paleontology 44(1):23-36 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 41537: authorized by David Bottjer, entered by Matthew Clapham on 16.07.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Trilobita
 Proetida - Phillipsiidae
Anisopyge hyperbola n. sp.1 Chamberlain 1972 trilobite
Strophomenata
 Productida - Aulostegidae
Chonosteges sp. Muir-Wood and Cooper 1960
Edriosteges sp. Muir-Wood and Cooper 1960
 Productida - Productellidae
Rugatia andersoni n. sp. Stehli and Grant 1970
Echinauris huehuetenanguensis n. sp. Stehli and Grant 1970
 Productida - Productidae
"Peniculauris subcostata" = Peniculauris subcostata2, "Peniculauris mckeei" = Peniculauris subcostata
"Peniculauris subcostata" = Peniculauris subcostata2 King 1931
"Peniculauris mckeei" = Peniculauris subcostata King 1931
 Productida - Rugosochonetidae
Neochonetes sp. Muir-Wood 1962
 Productida - Lyttoniidae
Lyttoniidae indet. Waagen 1883
 Productida - Hercosiidae
? Hercosia sp. Cooper and Grant 1969
Hercosestria notialis n. sp. Stehli and Grant 1970
 Orthotetida - Derbyiidae
Derbyia sp. Waagen 1884
 Orthotetida - Meekellidae
Rhynchonellata
 Spiriferida - Trigonotretidae
Neospirifer sp. Fredericks 1919
 Orthida - Enteletidae
 Orthida - Rhipidomellidae
Rhipidomella cf. cora d'Orbigny 1842