Buildex Inc. Quarry (Cretaceous of the United States)

Where: McPherson County, Kansas (38.6° N, 97.8° W: paleocoordinates 35.8° N, 58.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Kiowa Formation, Late/Upper Albian (105.3 - 99.6 Ma)

• said to be in the Inoceramus comancheanus zone and "approximately middle Late Albian"

•from "the upper one-third of the strata exposed at the quarry" and the unit is "between 30 and 40 m thick in central Kansas"

• member-level stratigraphic resolution

Environment/lithology: coastal; gray shale and poorly lithified, concretionary, glauconitic, hematitic, pyritic, sideritic, gray sandstone

• "near-shore marine"
• "mining shale... thin layers of poorly cemented gray sandstone... interbedded with gray shale... [sandstone includes] abundant iron pyrite [and in one layer is] glauconitic... intermingled with large siderite nodules... [another layer is] pyritized, sandy conglomerate resting on top of a layer of poorly cemented sandstone"

Size class: mesofossils

Collection methods: surface (float), surface (in situ),

• at least some material in situ and other material "from the surface"

•material reposited in the Fort Hays State University Sternberg Museum of Natural History

Primary reference: M. J. Everhart. 2004. First record of the hybodont shark genus, "Polyacrodus" sp., (Chondrichthyes; Polyacrodontidae) from the Kiowa Formation (Lower Cretaceous) of McPherson County, Kansas. Transactions of the Kansas Academy of Science 107(1/2):83-87 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38111: authorized by John Alroy, entered by John Alroy on 12.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• unspecified "sharks, bony fish and reptiles" are present: complete list given by J. C. Beamon 1999 (unpublished M.S. thesis)
 Hybodontiformes - Polyacrodontidae
"Polyacrodus" sp. Jaekel 1889 elasmobranch