Where: Arizona (35.2° N, 111.7° W: paleocoordinates 9.2° N, 36.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Harrisburg Member (Kaibab Formation), Roadian (272.3 - 268.8 Ma)

• Lower Harrisburg Member

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lithified limestone

Size class: microfossils

Collection methods: chemical, mechanical, sieve

• The materials for this study were mostly collected from the loosely consolidated sandy limestones, processed in a weak acetic acid solution and screen-washed through graded screens. Sediment residues were then picked under a binocular microscope. Larger specimens from large limestone blocks were prepared mechanically. Repository: Museum of Northern Arizona (MNA).

Primary reference: J. P. M. Hodnett, D. K. Elliott, T. J. Olson and J. H. Wittke. 2012. Ctenacanthiform sharks from the Permian Kaibab Formation, northern Arizona. Historical Biology 24:381-395 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 132093: authorized by Matthew Clapham, entered by Matthew Clapham on 07.08.2012

Creative Commons license: CC BY (attribution)