Mill Creek Site (Sand Layer): Rancholabrean, Michigan

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Bakerilymnea dalli
Catinella sp. Stache 1877
Cionella lubrica
Columella sp.
Probythinella lacustris
Tubuliforae indet. microspore
Ostracoda - Podocopida - Candonidae
Candona paraohioensis
Gastropoda - Heterostropha - Lymnaeidae
Stagnicola elodes
Fossaria sp. Westerlund 1885
Fossaria decampi
Gastropoda - Heterostropha - Planorbidae
Helisoma sp. Swainson 1940
Ferrissia fragilis
Armiger crista
Gyraulus deflectus
Gyraulus parvus
Gastropoda - Heterostropha - Valloniidae
Vallonia costata
Gastropoda - Heterostropha - Vertiginidae
Vertigo alpestris
subspecies oughtoni
Vertigo elatior
Vertigo cf. gouldi
Vertigo hannai
Vertigo modesta
Vertigo morsei
Vertigo ovata
Vertigo paradoxa
Gastropoda - Heterostropha - Zonitidae
Zonitoides aboreas
Gastropoda - Heterostropha - Carychiidae
Carychium exiguum
Gastropoda - Heterostropha - Valvatidae
Valvata sincera
Valvata tricarinata
Gastropoda - Viviparidae
Lioplax cf. suculosa
Gastropoda - Amnicolidae
Amnicola integra
Amnicola limosa
Gastropoda - Discidae
Discus cronkhitei
Gastropoda - Cycloneritida - Helicinidae
Hendersonia occulta
Bivalvia - Cardiida - Sphaeriidae
Pisidium compressum
Pisidium dubium
Pisidium idahoense
Pisidium milium
Pisidium variabile
Pisidium ventricosum
Pisidium nitidum Jenyns 1832
Sphaerium sp. Scopoli 1777
Sphaerium striatinum
Mammalia - Carnivora - Mustelidae
Mustela erminea Linnaeus 1758
1 specimen
Mammalia - Soricidae
Sorex hoyi Baird 1858
1 specimen
recombined as Microsorex hoyi
Mammalia - Lagomorpha - Leporidae
Leporidae indet. Fischer de Waldheim 1817
1 specimen
Mammalia - Rodentia - Zapodidae
Zapus sp. Coues 1876
1 specimen
    = Zapus cf. hudsonius Zimmermann 1780
Seymour 2004
Mammalia - Rodentia - Cricetidae
Peromyscus sp. Gloger 1841
1 specimen
Mictomys borealis (Richardson 1828)
1 specimen
    = Synaptomys borealis Richardson 1828
Seymour 2004
recombined as Synaptomys (Mictomys) borealis
Dicrostonyx sp. Gloger 1841
16 specimens
Clethrionomys sp. Tilesius 1850
1 specimen
synonym of Myodes
Lemmus sp. Link 1795
1 specimen
    = Lemmus cf. trimucronatus Richardson 1825
Seymour 2004
Microtus xanthognathus (Leach 1815)
12 specimens
Microtus pennsylvanicus (Ord 1815)
7 specimens
Actinopteri - Cypriniformes - Catostomidae
Catostomidae indet.
4 elements
Actinopteri - Cypriniformes - Cyprinidae
Cyprinidae indet. Rafinesque 1815
9 elements
Actinopteri - Sciaenidae
Aplodinotus sp. Rafinesque 1818
1 element
    = Aplodinotus cf. grunniens Rafinesque 1819
Seymour 2004
Actinopteri - Perciformes - Gasterosteidae
Pungitius sp. Annone 1760
7 elements
    = Pungitius cf. pungitius Linnaeus 1758
Seymour 2004
Actinopteri - Esociformes - Esocidae
Esox sp. Linnaeus 1758
2 elements
Angiospermae - Malvales - Tiliaceae
Tilia sp. microspore Linnaeus 1753
Angiospermae - Fagales - Betulaceae
Betula sp. microspore Linnaeus 1753
Angiospermae - Malpighiales - Salicaceae
Salix sp. microspore Linnaeus 1753
Pinopsida - Pinales - Pinaceae
Picea sp. microspore Dietrich 1824
Pinus sp. microspore Linnaeus 1753
Abies sp. microspore Miller 1754
Sphagnaceae
Sphagnum sp. microspore Linnaeus 1753
Polypodiopsida - Polypodiales - Dennstaedtiaceae
Pteridium sp. microspore Gleditsch and Scopoli 1760
Polypodiopsida - Polypodiales - Dryopteridaceae
Dryopteris sp. microspore Adanson 1763
"Dryopteris type"
see common names

Geography
Country:United States State/province:Michigan County:St. Clair
Coordinates: 43.1° North, 82.6° West (view map)
Paleocoordinates:43.0° North, 82.6° West
Basis of coordinate:stated in text
Altitude:213 meters
Geographic resolution:outcrop
Time
Period:Quaternary Epoch:Pleistocene
10 m.y. bin:Cenozoic 6
Key time interval:Rancholabrean
Age range of interval:0.21000 - 0.01400 m.y. ago
Stratigraphy
Local section:Mill Creek Site Local bed:3
Stratigraphic resolution:bed
Stratigraphy comments: "Middle Wisconsinan or greater" based on fauna, plus radiocarbon, thermoluminescene, and amino acid racemization dates
from a single "5-8 cm thick" fossiliferous layer
Lithology and environment
Primary lithology:fine,medium,gray silty,carbonaceous sandstone
Lithology description: "gray silty fine to medium sand... with brownish organic streaks and scattered bits of charcoal"
Environment:fluvial indet.
Geology comments: "perennial aquatic habitat" and possibly "riverine"
Taphonomy
Modes of preservation:body
Size of fossils:mesofossils,microfossils
Collection methods and comments
Collection methods:bulk,sieve,field collection
Rock censused:250 kg
Reason for describing collection:paleoecologic analysis
Metadata
Database number:70130
Authorizer:J. Alroy Enterer:J. Alroy
Modifier:J. Alroy Research group:vertebrate
Created:2007-03-18 16:19:48 Last modified:2007-03-18 20:47:26
Access level:the public Released:2007-03-18 16:19:48
Creative Commons license:CC BY
Reference information

Primary reference:
23549. 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]

Secondary references:

23548 K. L. Seymour. 2004. Pleistocene vertebrates from the pre-late Wisconsinan Mill Creek site, St. Clair County, Michigan. Michigan Academician 36:181-211 [J. Alroy/J. Alroy]