Elmo, Ward's Natural Science 1933 collection (Permian of the United States)

Where: Kansas (38.6° N, 97.2° W: paleocoordinates 3.6° N, 25.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Wellington Formation, Artinskian (290.1 - 279.3 Ma)

• The Elmo limestone itself is a chalky, soft, almost white deposit, about five feet thick; only the very bottom, more massive layer of this stratum contains insects.

• group of beds-level stratigraphic resolution

Environment/lithology: pond; lithified limestone

• Presence of Myalinella may suggest brackish-marine conditions, but stratigraphic position and presence of conchostracans and freshwater ostracods suggest a lacustrine/pond setting.

Size class: macrofossils

Preservation: mold/impression

Collected by A. B. Klots, V. S. L. Pate, W. D. Sargent in 1933; reposited in the AMNH

Collection methods: quarrying

Primary reference: E. B. Klots. 1944. Notes on the Protodonata and Protozygoptera of the Lower Permian of Kansas. American Museum Novitates 1260:1-7 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 111365: authorized by Matthew Clapham, entered by Matthew Clapham on 23.06.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

Insecta
 Meganisoptera - Meganeuridae
"Tupus readi" = Shenzhousia readi Carpenter 1933 griffinfly
Oligotypus tillyardi Carpenter 1931 griffinfly
Tupus sp. Sellards 1906 griffinfly
 Dicondylia - Kennedyidae
Kennedya mirabilis Tillyard 1925 winged insect
 Dicondylia - Progoneuridae
"Kennedya (Progoneura) minuta" = Progoneura minuta
"Kennedya (Progoneura) minuta" = Progoneura minuta Carpenter 1931 winged insect