Friendsville Mine - Incised channel fill / lenses (Carboniferous of the United States)

Where: Wabash County, Illinois (38.4° N, 87.9° W: paleocoordinates 6.3° S, 23.4° W)

• coordinate stated in text

When: Cohn Coal Member (Mattoon Formation), Kasimovian (307.0 - 303.7 Ma)

Environment/lithology: fluvial; gray conglomerate

• Several thin lenses, #0.1 m thick, of conglomerate identical to that lower in the channel fill are interbedded with the dark shale. These lenses contain highly abundant vertebrate skeletal fragments, including elements #0.14 m long.

•Channel is cutting down from a horizon within Unit 3, the claystone paleosol below the Cohn Coal, and shallowly eroding into the top of Unit 2. The channel body is 2.1–2.6 m thick at its deepest point and approximately 45 m wide—estimated perpendicular to the approximately N–S oriented channel margin

Size classes: macrofossils, mesofossils, microfossils

Collected in 2009

Collection methods: acetic,

• Approximately 15 kg of bulk samples

Primary reference: D. Carpenter, H.J. Falcon-Lang, M.J. Benton and W.J. Nelson. 2011. Fishes and tetrapods in the upper Pennsylvanian (Kasimovian) Cohn Coal Member of the Mattoon formation of Illinois, United States: systematics, paleoecology, and paleoenvironments. Palaios 26:639-657 [B. Seuss/B. Seuss]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 224241: authorized by Barbara Seuss, entered by Barbara Seuss on 02.02.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

• 7642 vertebrate specimens obtained, 1399 specimens identified
Show authors, comments, and common names
unclassified
  -
Vertebrata indet., Lycopsidae indet., Plantae indet., Holocephali indet., Osteichthyes indet., Amniota indet.
Lycopsidae indet.
megaspore
Plantae indet.
megaspores
Lycopsida
  -
Chaloneria sp.
Chaloneria sp. Pigg and Rothwell 1983
Valvisisporites
  -
Valvisisporites auritus
Osteichthyes
 Tetrapoda -
Tetrapoda "sp. A", Tetrapoda "sp. B"
Tetrapoda "sp. A" Jaekel 1911 tetrapod
Tetrapoda "sp. B" Jaekel 1911 tetrapod
 Synapsida - Sphenacodontidae
Sphenacodontidae indet.
Sphenacodontidae indet. Marsh 1878 synapsid
 Actinopterygii -
Actinopterygii "sp. A", Actinopterygii "sp. B"
Actinopterygii "sp. A" Cope 1887 ray-finned fish
Actinopterygii "sp. B" Cope 1887 ray-finned fish
Chondrichthyes
 Helodontiformes - Helodontidae
Helodus sp.
Helodus sp. Agassiz 1838 chimaera
 Elasmobranchii -
Elasmobranchii indet.
 Xenacanthida - Orthacanthidae
? Orthacanthus cf. compressus
? Orthacanthus cf. compressus Newberry 1856 elasmobranch
 Xenacanthimorpha -
Xenacanthiformes indet.
Xenacanthiformes indet. Berg 1955 elasmobranch
 Xenacanthiformes - Diplodoselachidae
Dicentrodus cf. alatus
 Xenacanthiformes - Xenacanthidae
Xenacanthus cf. ossiani, Triodus sp.
Triodus sp. Jordan 1849 elasmobranch
 Euselachii - Sphenacanthidae
Sphenacanthus sp.
Sphenacanthus sp. Agassiz 1837 elasmobranch
Polychaeta
 Sabellida - Serpulidae
Serpulidae indet.
Serpulidae indet. Rafinesque 1835
two types of spirorbids