Where: Madison County, Iowa (41.3° N, 94.2° W: paleocoordinates 0.5° S, 25.5° W)

• coordinate estimated from map

When: Leavenworth Limestone Member (Oread Limestone Formation), Virgilian (303.7 - 298.9 Ma)

• Leavenworth Limestone Member of the Oread Limestone is the "middle-limestone" of the Oread Megacyclothem (Pennsylvanian, Virgilian); stratigraphic and faunal evidence suggests that the Salem School Member of northcentral Texas is time correlative with the Leavenworth Limestone

•stone

•Thickness: 1.2 feet

Environment/lithology: platform or shelf-margin reef; limestone

Size classes: mesofossils, microfossils

• in addition to the algae: coated grains composed of algal crust (Archaeolithophyllum cf. lamellosum), "Osagid"-type coated grains, fine borings (fungal?)

•silicified sponge spicules are found at localities 16, 21, 23, 27, 28, 29; sponge spicules were observed across the outcrop belt though

•fecal pellets are found but not present at localities 1,2,4,16,17,19,22, 24A, 25, 26, 28, 29

Primary reference: D.F. Toomey. 1969. The Biota of the Pennsylvanian (Virgilian) Leavenworth Limestone, Midcontinent Region Part I: Stratigraphy, Paleogeography, and Sediment Facies Relationships. Journal of Paleontology 43(4):1001-1018 [B. Seuss/B. Seuss/B. Seuss]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 217130: authorized by Barbara Seuss, entered by Barbara Seuss on 25.01.2021

Creative Commons license: CC BY (attribution)