Midco Locality 16 (ESU Collection) (Permian of the United States)

Where: Noble County, Oklahoma (36.3° N, 97.3° W: paleocoordinates 1.7° N, 27.0° W)

• coordinate stated in text

• small collection-level geographic resolution

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

• "Lower Permian... Leonardian... Artinskian"

• bed-level stratigraphic resolution

Environment/lithology: lacustrine; lithified, massive, dolomitic, gray, argillaceous limestone

• Salty playa lake. The lower layer shows sedimentational and organic features which suggest that it was laid down close to the shore and that most of its biota was washed into the lake. The matrix and biota of the middle layer, which is highly irregular and characterized by pink partings, were probably transported to the water by violent dust storms. The upper layer is highly argillaceous, and was deposited under strongly saline conditions; insects are rare but they are very well preserved.
• "Argillaceous, dolomitic limestone, in solid, massive, heavy layer, dark gray, homogeneous, non-laminated, very fine-grained, locally with one or two laminae of coarser, more porous material, the horizontal surfaces of which are mottled hematite red and light brownish gray" (repeated from Raasch 1946)

Size class: mesofossils

Preservation: adpression

Collected by R. J. Beckemeyer, J. Hall in 2003

Collection methods: quarrying,

• Johnston Geology Museum, Emporia State University collection

Primary reference: R. J. Beckemeyer. 2004. A new species of the extinct family †Lophioneuridae from the Lower Permian Wellington Formation of Noble County, Oklahoma. Journal of the Kansas Entomological Society 77(2):132-136 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 104818: authorized by John Alroy, entered by John Alroy on 10.02.2011, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
unclassified
  -
Plantae indet.
Plantae indet. Haeckel 1866
"fragments"
Insecta
 Diaphanopterodea - Martynoviidae
Martynovia halli n. sp.
Martynovia halli n. sp. Beckemeyer 2004 winged insect
 Lophioneurida - Lophioneuridae
Cyphoneurodes patriciae n. sp.
Cyphoneurodes patriciae n. sp. Beckemeyer 2004 winged insect
Branchiopoda
 Diplostraca -
Conchostraca indet.
Conchostraca indet. Sars 1867 clam shrimp
"broken fragments of shells"