PBDB Collection

Mill Creek Site (Sand Layer) (Pleistocene of the United States)

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

• "perennial aquatic habitat" and possibly "riverine"

• "gray silty fine to medium sand... with brownish organic streaks and scattered bits of charcoal"

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

Show authors, comments, and common names

unclassified
-	Bakerilymnea dalli, Cionella lubrica, Columella sp., Probythinella lacustris, Tubuliforae indet. Bakerilymnea dalli Cionella lubrica Columella sp. Probythinella lacustris Tubuliforae indet.
Pinopsida
Pinales - Pinaceae	Picea sp., Pinus sp., Abies sp. Picea sp. Dietrich 1824 spruce Pinus sp. Linnaeus 1753 pine Abies sp. Miller 1754 fir
Angiospermae
Malpighiales - Salicaceae	Salix sp. Salix sp. Linnaeus 1753 willow
Fagales - Betulaceae	Betula sp. Betula sp. Linnaeus 1753 birch
Malvales - Tiliaceae	Tilia sp. Tilia sp. Linnaeus 1753 linden
Polypodiopsida
Polypodiales - Polypodiidae	Dryopteris sp., Pteridium sp. Dryopteris sp. Adanson 1763 "Dryopteris type" Pteridium sp. Gleditsch and Scopoli 1760
Sphagnum
- Sphagnaceae	Sphagnum sp. Sphagnum sp. Linnaeus 1753 peat moss
Actinopteri
Cypriniformes - Catostomidae	Catostomidae indet. Catostomidae indet. carp-like fish
Cypriniformes - Cyprinidae	Cyprinidae indet. Cyprinidae indet. Rafinesque 1815 carp-like fish
Esociformes - Esocidae	Esox sp. Esox sp. Linnaeus 1758 pike
Acanthomorphata - Sciaenidae	Aplodinotus cf. grunniens Aplodinotus cf. grunniens Rafinesque 1819 freshwater drum
Perciformes - Gasterosteidae	Pungitius cf. pungitius Pungitius cf. pungitius Linnaeus 1758 ninespine stickleback
Mammalia
Carnivora - Mustelidae	Mustela erminea Mustela erminea Linnaeus 1758 stoat
Theriamorpha - Soricidae	"Sorex hoyi" = Microsorex hoyi "Sorex hoyi" = Microsorex hoyi Baird 1858 American pygmy shrew
Rodentia - Cricetidae	"Synaptomys borealis" = Synaptomys (Mictomys) borealis, Peromyscus sp., Microtus pennsylvanicus, Microtus xanthognathus, Dicrostonyx sp., "Clethrionomys sp." = Myodes, Lemmus cf. trimucronatus "Synaptomys borealis" = Synaptomys (Mictomys) borealis Richardson 1828 northern bog lemming Peromyscus sp. Gloger 1841 deer mouse Microtus pennsylvanicus Ord 1815 meadow vole Microtus xanthognathus Leach 1815 taiga vole Dicrostonyx sp. Gloger 1841 lemming "Clethrionomys sp." = Myodes Pallas 1811 vole Lemmus cf. trimucronatus Richardson 1825 brown lemming
Rodentia - Zapodidae	Zapus cf. hudsonius Zapus cf. hudsonius Zimmermann 1780 meadow jumping mouse
Lagomorpha - Leporidae	Leporidae indet. Leporidae indet. Fischer de Waldheim 1817 rabbit
Gastropoda
Architaenioglossa - Viviparidae	Lioplax cf. suculosa Lioplax cf. suculosa snail
Sorbeoconcha - Amnicolidae	Amnicola integra, Amnicola limosa Amnicola integra snail Amnicola limosa snail
Cycloneritida - Helicinidae	Hendersonia occulta Hendersonia occulta snail
Heterostropha - Lymnaeidae	Fossaria sp., Fossaria decampi, Stagnicola elodes Fossaria sp. Westerlund 1885 snail Fossaria decampi snail Stagnicola elodes snail
Heterostropha - Planorbidae	Armiger crista, Helisoma sp., Ferrissia fragilis, Gyraulus deflectus, Gyraulus parvus Armiger crista snail Helisoma sp. Swainson 1940 snail Ferrissia fragilis snail Gyraulus deflectus snail Gyraulus parvus snail
Stylommatophora - Valloniidae	Vallonia costata Vallonia costata slug
Stylommatophora - Vertiginidae	Vertigo alpestris, Vertigo elatior, Vertigo cf. gouldi, Vertigo hannai, Vertigo modesta, Vertigo morsei, Vertigo ovata, Vertigo paradoxa Vertigo alpestris slug subspecies oughtoni Vertigo elatior slug Vertigo cf. gouldi slug Vertigo hannai slug Vertigo modesta slug Vertigo morsei slug Vertigo ovata slug Vertigo paradoxa slug
Stylommatophora - Zonitidae	Zonitoides aboreas Zonitoides aboreas true glass snail
Heterostropha - Carychiidae	Carychium exiguum Carychium exiguum snail
Heterostropha - Valvatidae	Valvata sincera, Valvata tricarinata Valvata sincera snail Valvata tricarinata snail
Pulmonata - Discidae	Discus cronkhitei Discus cronkhitei disk snail
Bivalvia
Cardiida - Sphaeriidae	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
Podocopida - Candonidae	Candona paraohioensis Candona paraohioensis ostracod