Where: St. Clair County, Michigan (43.1° N, 82.6° W: paleocoordinates 43.0° N, 82.6° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Rancholabrean (0.3 - 0.0 Ma)
• "Middle Wisconsinan or greater" based on fauna, plus radiocarbon, thermoluminescene, and amino acid racemization dates
•from a single "5-8 cm thick" fossiliferous layer
• bed-level stratigraphic resolution
Environment/lithology: fluvial; fine-grained, medium, gray, silty, carbonaceous sandstone
Size classes: mesofossils, microfossils
Collection methods: bulk, sieve,
Primary reference: P. F. Karrow, K. L. Seymour, B. B. Miller and J.E. Mirecki. 1997. Pre-Late Wisconsinan Pleistocene biota from southeastern Michigan, U.S.A. Palaeogeography, Palaeoclimatology, Palaeoecology 133(1-2):81-101 [J. Alroy/J. Alroy]more details
Purpose of describing collection: paleoecologic analysis
PaleoDB collection 70130: authorized by John Alroy, entered by John Alroy on 18.03.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Angiospermae | |
Tilia sp. Linnaeus 1753 linden | |
Salix sp. Linnaeus 1753 willow | |
Betula sp. Linnaeus 1753 birch | |
Pinopsida | |
Polypodiopsida | |
Pteridium sp. Gleditsch and Scopoli 1760 | |
Sphagnum | |
Sphagnum sp. Linnaeus 1753 peat moss | |
Gastropoda | |
Discus cronkhitei disk snail | |
Vertigo alpestris, Vertigo elatior, Vertigo cf. gouldi, Vertigo hannai, Vertigo modesta, Vertigo morsei, Vertigo ovata, Vertigo paradoxa
Vertigo elatior slug
Vertigo cf. gouldi slug
Vertigo hannai slug
Vertigo modesta slug
Vertigo morsei slug
Vertigo ovata slug
Vertigo paradoxa slug | |
Vallonia costata slug | |
Zonitoides aboreas true glass snail | |
Carychium exiguum snail | |
Armiger crista snail
Helisoma sp. Swainson 1940 snail
Ferrissia fragilis snail
Gyraulus deflectus snail
Gyraulus parvus snail | |
Valvata sincera snail
Valvata tricarinata snail | |
Hendersonia occulta snail | |
Lioplax cf. suculosa snail | |
Amnicola integra snail
Amnicola limosa snail | |
Bivalvia | |
Pisidium compressum, Pisidium dubium, Pisidium idahoense, Pisidium milium, Pisidium variabile, Pisidium ventricosum, Pisidium nitidum, Sphaerium sp., Sphaerium striatinum
Pisidium compressum pea clam
Pisidium dubium pea clam
Pisidium idahoense pea clam
Pisidium milium pea clam
Pisidium variabile pea clam
Pisidium ventricosum pea clam
Pisidium nitidum Jenyns 1832 pea clam
Sphaerium sp. Scopoli 1777 fingernail clam
Sphaerium striatinum fingernail clam | |
Ostracoda | |
Candona paraohioensis ostracod | |
Actinopteri | |
Catostomidae indet. carp-like fish | |
Cyprinidae indet. Rafinesque 1815 carp-like fish | |
Esox sp. Linnaeus 1758 pike | |
Aplodinotus cf. grunniens Rafinesque 1819 freshwater drum | |
Pungitius cf. pungitius Linnaeus 1758 ninespine stickleback | |
Mammalia | |
Leporidae indet. Fischer de Waldheim 1817 rabbit | |
"Clethrionomys sp." = Myodes, Dicrostonyx sp., Microtus xanthognathus, Microtus pennsylvanicus, Lemmus cf. trimucronatus, "Synaptomys borealis" = Synaptomys (Mictomys) borealis, Peromyscus sp.
"Clethrionomys sp." = Myodes Pallas 1811 vole
Dicrostonyx sp. Gloger 1841 lemming
Microtus xanthognathus Leach 1815 taiga vole
Microtus pennsylvanicus Ord 1815 meadow vole
Lemmus cf. trimucronatus Richardson 1825 brown lemming
"Synaptomys borealis" = Synaptomys (Mictomys) borealis Richardson 1828 northern bog lemming
Peromyscus sp. Gloger 1841 deer mouse | |
Zapus cf. hudsonius Zimmermann 1780 meadow jumping mouse | |
Mustela erminea Linnaeus 1758 stoat | |
"Sorex hoyi" = Microsorex hoyi
"Sorex hoyi" = Microsorex hoyi Baird 1858 American pygmy shrew |