Where: Kansas (38.9° N, 95.2° W: paleocoordinates 3.2° S, 28.2° W)
• coordinate based on nearby landmark
• local area-level geographic resolution
When: Haskell Limestone Member (Lawrence Formation), Kasimovian (307.0 - 303.7 Ma)
• Basal Virgilian. The nodules occur immediately above the Haskell limestones, which are of marine origin, and at the base of the Robbins shale originated in brackish waters.
• group of beds-level stratigraphic resolution
Environment/lithology: coastal; lithified, nodular limestone
Size class: macrofossils
Reposited in the MNHN
• The nodules were collected in a concretion-rich area that was first reported and studied by Twenhofel and Dunbar (1914). An extensive paleoecological, stratigraphical and geochemical study about these nodules was later undertaken by Miller and Swineford (1957). Some specimens in Museum of Natural History, University of Kansas.
Primary reference: C. Poplin. 1984. Lawrenciella schaefferi n. g. n. sp. (Pisces: Actinopterygii) and the use of endocranial characters in the classification of the Palaeonisciformes. Journal of Vertebrate Paleontology 4(3):413-421 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 117102: authorized by Matthew Clapham, entered by Matthew Clapham on 15.09.2011
Creative Commons license: CC BY (attribution)