PBDB Collection

Leavenworth Cass NE Outcrop, Locality 25 (Carboniferous of the United States)

Where: Cass County, Nebraska (41.0° N, 96.0° W: paleocoordinates 0.1° S, 26.8° 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: 1.7 feet

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

• Leavenworth limestone was deposited in a relatively shallow water on a broad, slowly subsiding, carbonate platform

• "skeletal-mud-facies"

•Leavenworth limestone is dark bluish-gray, fine-grained, dense, very hard, vertically jointed, moderately fossiliferous; in most localities is occurs as one prominent bed ranging in thickness from slightly under 1 foot to a max. of 3 feet; skeletal mud occurs at 27 (of 32) localities and is the dominent LL facies

•Condra (1927): 1f 4", blue, brittle, massive, one or two beds, forms rectangular blocks

Size classes: mesofossils, microfossils

• in addition to the algae: "Osagid"-type coated grains, coarse borings (algal?)

•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 217126: authorized by Barbara Seuss, entered by Barbara Seuss on 25.01.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names

unclassified
-	Minammodytes polyvertus², Fish indet.³ Minammodytes polyvertus² Fish indet.³ teeth and denticles
Tubothalamea
Miliolida - Cornuspiridae	Hemigordius harltoni¹, Apterrinella ? sp.¹ Hemigordius harltoni¹ Apterrinella ? sp.¹
Foraminifera
Textulariina - Hyperamminidae	Hyperammina glabra² Hyperammina glabra²
Palaeotextularoidea - Biseriamminidae	Globivalvulina bulloides¹ Globivalvulina bulloides¹ Brady 1876
Palaeotextularoidea - Palaeotextulariidae	Climacammina moelleri¹ Climacammina moelleri¹
Endothyroidea - Endothyridae	Endothyra sp.¹ Endothyra sp.¹
Endothyroidea - Bradyinidae	Bradyina magna¹ Bradyina magna¹ Roth and Skinner 1930
Fusulinoidea - Eostaffellidae	Millerella sp.¹ Millerella sp.¹
Fusulinoidea - Staffellidae	Nankinella ? sp.¹ Nankinella ? sp.¹ Lee 1933
Fusulinoidea - Schwagerinidae	Triticites sp.¹ Triticites sp.¹ Girty
Fusulinoidea -	Kansanella sp.¹ Kansanella sp.¹
Fusulinina - Tuberitinidae	Tuberitina bulbacea¹ Tuberitina bulbacea¹
Tetrataxoidea - Tetrataxidae	Tetrataxis conica¹ Tetrataxis conica¹
Lagenina - Syzraniidae	Syzrania bella¹ Syzrania bella¹
Lituolida - Lituolidae	Ammobaculites stenomecus², "Textularia" exima² Ammobaculites stenomecus² "Textularia" exima² "Textularia exima Eichwald, 1860" sensu Ireland, 1956
Conodonta
Ozarkodinida - Cavusgnathidae	Adetognathus "sp. 1"³ Adetognathus "sp. 1"³ conodont P element, A1 element

¹Toomey 1972; ²Toomey 1974; ³Toomey et al. 1974