The Baker Bluff Cave deposit, Tennessee, and the late Pleistocene faunal gradient

Guilday, John E.; Hamilton, Harold W.; Anderson, Edgar; Parmalee, Paul W.

doi:10.5962/p.228590

Cited by 56 publications

(10 citation statements)

References 21 publications

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“…700,000 years BP, slightly older than the late Kansan Cudahy fauna ( Van der Meulen, 1978). Ochotona is not present in any of the numerous Wisconsinan to early Holocene cave faunas from the Appalachians (Guilday et al, 1977(Guilday et al, , 1978…”

Section: Ecology Of Eastern Ochotonamentioning

confidence: 96%

Eastern North American Pleistocene Ochotona (Lagomorpha: Mammalia)

Guilday¹

1979

Annals of the Carnegie Museum

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Section: Ecology Of Eastern Ochotonamentioning

confidence: 96%

Eastern North American Pleistocene Ochotona (Lagomorpha: Mammalia)

Guilday¹

1979

Annals of the Carnegie Museum

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“…comm. ), Baker Bluff Cave, Tennessee (Guilday et al 1978), and Bell Cave, Alabama (Parmalee 1992). The fifth is from Cutler Hammock, Florida (Emslie 1998).…”

Section: Corvus Brachyrhynchosmentioning

confidence: 99%

Late Pleistocene Birds from Kingston Saltpeter Cave, Southern Appalachian Mountains, Georgia

Steadman

2005

FLMNH

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Kingston Saltpeter Cave, Bartow County, Georgia, has produced late Quaternary fossils of 38 taxa of birds. The presence of extinct species of mammals, and three radiocarbon dates on mammalian bone collagen ranging from approximately 15,000 to 12,000 Cal B.P., indicate a late Pleistocene age for this fauna, although a small portion of the fossils may be Holocene in age. The birds are dominated by forest or woodland species, especially the Ruffed Grouse (Bonasa umbellus) and Passenger Pigeon (Ectopistes migratorius). Species indicative of brushy or edge habitats, wetlands, and grasslands also are present. They include the Greater Prairie Chicken (Tympanuchus cupido, a grassland indicator) and Black-billed Magpie (Pica pica, characteristic of woody edges bordering grasslands). Both of these species reside today no closer than 1000+ km to the west (mainly northwest) of Georgia. An enigmatic owl, perhaps extinct and undescribed, is represented by two juvenile tarsometatarsi. The avifauna of Kingston Saltpeter Cave suggests that deciduous or mixed deciduous/coniferous forests and woodlands were the dominant habitats in the late Pleistocene of southernmost Appalachia, with wetlands and grasslands present as well.

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“…Some studies focused on certain morphological features such as size or the complexity of as an aid in identification of Microtus species. The size criterion was used in conjunction with cranial characters from partial skulls and dental variation to identify the remains of M. xanthognathus in the eastern United States (Guilday and Bender, 1960;Hallberg et aL, 1974;Guilday et aL, 1977Guilday et aL, , 1978, but these studies did not consider M. richardsoni, another large species from the northwestern United States. Similarly, the presence of with an additional posterior dentine field is often regarded as positive evidence of the presence of M. pennsylvanicus, yet this morphological feature is irregularly expressed in a number of different North American species, and is a regular feature in at least two others (Bell, 1997;Bell and Repenning, 1999).…”

Section: Systematic Accountsmentioning

confidence: 99%

The microtine rodents from the Pit locality in Porcupine Cave, Park County, Colorado

Bell¹,

Barnosky²

2000

Annals of the Carnegie Museum

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This report presents the results of an analysis of the microtine rodents from the Pit locality, one of four localities within Porcupine Cave that have a relatively long stratigraphic sequence. At 2900 m elevation. Porcupine Cave is the highest elevation site in North America to have produced a diverse microtine rodent assemblage. At least 11 species are distributed through 14 stratigraphic levels: Phenacomys gryci, Phenacomys sp., Mimomys (Cromeromys) cf. M. virginianus, Ondatra sp., Allophaiomys pUocaenicus, Terricola meadensis, Mictomys cf. M. meltoni, Microtus paroperarius, Microtus sp. (not M. paroperarius), Lemmiscus curtatus, and Lemmiscus sp. All but one of these {Phenacomys sp. not P. gryci) occur within a single stratigraphic level (level 4), making the assemblage of microtines unique in species composition and among the most diverse known from any fossil deposit. The diversity of the assemblage probably results from the location of the site within a topographically diverse ecotonal region that allowed sampling of a wide range of nearby microhabitats by the carnivores and raptors that initially collected the bones. The unique species assemblage is likely related to the high elevation of the site, which differentiates it physiographically from any other fossil deposit that has produced microtine rodents in abundant numbers, and perhaps because the Rocky Mountain backbone served as both a dispersal corridor and refugium as taxa adjusted biogeographic ranges in response to glacial-interglacial transitions and other climatic changes.The particular assemblage of species, when compared with previously dated occurrences of microtine species, suggests that levels 4-8 of the excavation date to between approximately 750,000 and 850,000 YBR This age assessment is consistent with paleomagnetic data which indicate that level 8 is older than the Bruhnes-Matuyama boundary (780,000 YBP). The microtine biochronology suggests that the upper levels of the Pit (levels 1-3), date somewhere between 250,000 and 780,000 YBP, but it is not yet possible to be more precise.The new data presented herein are important in revising previously reported interpretations of the age of the Pit locality (e.g., the level 4/3 transition is now thought to be between 750,000 and 850,000 YBP rather than the previous interpretation of near 400,000 YBP). In addition, these data document the occurrence of a unique microtine species assemblage which has implications for biochronological schemes that rely on microtines, and provide a framework for interpreting the timing and effects of climate change on the other 70+ species that occur in this very important middle Pleistocene site.

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The Baker Bluff Cave deposit, Tennessee, and the late Pleistocene faunal gradient

Abstract: Paris No.4, Pa. 40°05'N. lat.

Cited by 56 publications

References 21 publications

Eastern North American Pleistocene Ochotona (Lagomorpha: Mammalia)

Eastern North American Pleistocene Ochotona (Lagomorpha: Mammalia)

Late Pleistocene Birds from Kingston Saltpeter Cave, Southern Appalachian Mountains, Georgia

The microtine rodents from the Pit locality in Porcupine Cave, Park County, Colorado

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