Leavenworth Buchanan MO Outcrop, Locality 23 (Carboniferous of the United States)

Where: Buchanan County, Missouri (39.8° N, 94.9° W: paleocoordinates 1.6° S, 26.7° 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: 1.9 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

•LL consists of two beds of massive limestone separated by a thin fossiliferous gray-green marine shale; total thickness a bit under 2f, shale unit is only sporadically developed along the line of the outcrop

Size classes: mesofossils, microfossils

• in addition to the algae: (?) coated grains composed of algal crust (Archaeolithophyllum cf. lamellosum), "Osagid"-type coated grains, coarse borings (algal?), 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 217123: authorized by Barbara Seuss, entered by Barbara Seuss on 25.01.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Tubothalamea
 Miliolida - Cornuspiridae
Foraminifera
 Lagenina - Syzraniidae
 Ammodiscoidea - Saccamminidae
 Textulariina - Hyperamminidae
 Endothyroidea - Endothyridae
 Endothyroidea - Bradyinidae
Bradyina magna2 Roth and Skinner 1930
 Fusulinoidea - Schwagerinidae
 Fusulinoidea - Eostaffellidae
 Fusulinoidea -
 Fusulinina - Palaeospiroplectamminidae
 Fusulinina - Tuberitinidae
 Tetrataxoidea - Tetrataxidae
 Palaeotextularoidea - Biseriamminidae
 Palaeotextularoidea - Palaeotextulariidae
 Lituolida - Lituolidae
"Textularia" exima3
"Textularia exima Eichwald, 1860" sensu Ireland, 1956
Florideophyceae
 Cryptonemiales - Archaeolithophyllaceae
Chlorophyceae
 Dasycladales - Seletonellaceae
Conodonta
 Ozarkodinida -
Ozarkodina "n. sp. A"4 Branson and Mehl 1933 conodont
P element, present in locality 23B which is not descibed
 Ozarkodinida - Cavusgnathidae
Adetognathus lautus4 conodont
P element, present in locality 23B which is not descibed
 Ozarkodinida - Anchignathodontidae
"Ozarkodina minuta" = Hindeodus minutus4
"Ozarkodina minuta" = Hindeodus minutus4 Ellison 1941 conodont
P element, present in locality 23B which is not descibed
 Ozarkodinida - Idiognathodontidae
Idiognathodus elegantulus4 conodont
P element
Idiognathodus ? simulator4 conodont
P element
Holothuroidea
 Dendrochirotida - Calclamnidae
Eocaudina cf. gutschicki4 Frizzell and Exline 1955 sea cucumber
 Elasipodida - Palaeocaudinidae
"Protocaudina cf. kansasensis" = Palaeocaudina kansasensis4
"Protocaudina cf. kansasensis" = Palaeocaudina kansasensis4 Hanna 1930 sea cucumber
Polychaeta
  -
Polychaeta indet.4 Grube 1850
scolecodonts
unclassified
  -
Porifera indet.4 Grant 1836
klostose monaxon spicule (oxeakloster); polyactine spicules (probably oxyasters); spicules; meandrostid-like calcareous sponge fragments
Cuneiphycus
  -
Shamovella
  -
"Tubiphytes cf. obscurus" = Shamovella obscura1
"Tubiphytes cf. obscurus" = Shamovella obscura1 Maslov 1956