NMMNH L-3437; Carrizo Arroyo (Permian of the United States)

Where: New Mexico (34.8° N, 106.9° W: paleocoordinates 1.1° N, 36.5° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Red Tanks Member (Bursum Formation), Asselian (298.9 - 295.5 Ma)

• "In Carrizo Arroyo, a 100-m thick section through the Red Tanks Member of the Bursum Formation (late Virgilian)." "Bursumian." Placement Carboniferous-Permian boundary has varied, but Lucas et al. (2013, 2016) correlated the two non-marine Lagerstatten with the early Asselian based on conodonts equivalent to the Streptognathodus nevaensis zone.

• group of beds-level stratigraphic resolution

Environment/lithology: pond; lithified, gray, green mudstone

• "Each DS consists mostly of red and purple, nonmarine mudstones and siltstones of a coastal plain environment and of greenish-gray, locally fossiliferous mudstones of a brackish to freshwater environment." Schneider et al., 2004
• "Both localities are in greenish-gray mudstone. This mudstone lithofacies appears massive, but locally a poorly developed fissility can be recognized. The mineralogic composition is similar to that of the purple and red mudstones/siltstones; these strata contain chlorite, illite, kaolinite, montmorillonite, rare other clay minerals, quartz, calcite and albite in varying amounts." Schneider et al., 2004

Size classes: macrofossils, mesofossils

Preservation: mold/impression, adpression

Reposited in the NMMNH

Primary reference: A. P. Rasnitsyn, D. S. Aristov, A. V. Gorochov, J. M. Rowland, and N. D. Sinitshenkova. 2004. Important new insect fossils from Carrizo Arroyo and the Permo-Carboniferous faunal boundary. In S. G. Lucas, K. E. Zeigler (eds.), Carboniferous-Permian transition, New Mexico Museum of Natural History and Science Bulletin 25:215-246 [M. Clapham/J. Karr]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 124385: authorized by Matthew Clapham, entered by Jered Karr on 14.02.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Insecta
 Archaeognatha - Dasyleptidae
Dasyleptus rowlandi n. sp.
Dasyleptus rowlandi n. sp. Rasnitsyn 2004 jumping bristletails
 Miomoptera - Palaeomanteidae
Neodelopterum anomalum n. gen. n. sp., ? Delopterum sp., Delopterum commune
Neodelopterum anomalum n. gen. n. sp. Rasnitsyn 2004 winged insect
NMMNH P-36625
? Delopterum sp. Sellards 1909 winged insect
NMMNH P-36608
Delopterum commune Rasnitsyn 2004 winged insect
NMMNH P-36609
 Caloneurodea - Caloneuridae
Vilviopsis picta
Vilviopsis picta Rasnitsyn 2004 winged insect
NMMNH P-26912
 Grylloblattodea - Liomopteridae
Liomopteridae indet.
Liomopteridae indet. Sellards 1909 ice crawler
NMMNH P-36555
 Dicondylia - Phyloblattidae
Phyloblatta flabellata, Anthracoblattina "sp. 2", Xenoblatta sp.
Phyloblatta flabellata Germar 1842 winged insect
NMMNH P-36970
Anthracoblattina "sp. 2" Scudder 1879 winged insect
NMMNH P-36975
Xenoblatta sp. Handlirsch 1906 winged insect
NMMNH P-36973
 Lepismatona -
Microcarrizo paradoxicum n. gen. n. sp.
Microcarrizo paradoxicum n. gen. n. sp. Rasnitsyn 2004 insect
NMMNH P-37011