Where: St. Lucie County, Florida (27.5° N, 80.5° W: paleocoordinates 27.5° N, 80.5° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Okeechobee Formation, Middle Pleistocene (0.8 - 0.1 Ma)
• The vertebrate fossil layer at DCP lies just below the Anastasia Formation and was the lowest stratum regularly exposed above water. While its lower boundary was not measured, this layer was only a few meters thick (Herrera et al., 2006). Electron spin resonance optical dating has confirmed these suspicions; a sample of siliciclastic sediments from just above the vertebrate fossil layer, at a depth of 11.5 m, was dated at 730-430 ka (0.73-0.43 Ma; Burdette et al., 2013). Strata below the vertebrate fossil layer occasionally were exposed at DCP. Petuch (2004) measured some sections and believed that these lower layers corresponded to the late Pliocene to early Pleistocene Nashua ‘formation.’ Burdette et al. (2013) dated a sample from those low layers (depth 14 m) at 1.37-0.61 Ma. If these age assessments are correct, then the fossil layer is certainly older than typical facies of the Anastasia Formation and should be included in Scott’s Okeechobee Formation.
Environment/lithology: mire or swamp; unlithified sandstone
Size class: macrofossils
Primary reference: J. A. Kilmer and D. W. Steadman. 2016. A middle Pleistocene bird community from Saint Lucie County, Florida. Bulletin of the Florida Museum of Natural History 55:1-38 [M. Clapham/M. Clapham]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 195048: authorized by Matthew Clapham, entered by Matthew Clapham on 14.07.2018, edited by Mark Uhen
Creative Commons license: CC BY (attribution)
Taxonomic list
Aves | |
Grus sp. Brisson 1760 crane | |
Fulica americana Gmelin 1789 American coot
Rallus elegans Audubon 1834 king rail | |
Bubo virginianus Gmelin 1788 great horned owl | |
Aythya collaris Donovan 1809 ring-necked duck
Bucephala clangula Linnaeus 1758 common goldeneye | |
Anhinga anhinga Linnaeus 1766 anhinga | |
Morus bassanus Linnaeus 1758 northern gannett | |
Phalacrocorax cf. auritus Lesson 1831 double-crested cormorant | |
Ciconia maltha Miller 1910 asphalt stork | |
Eudocimus albus Linnaeus 1758 White ibis | |
Ardea herodias Linnaeus 1758 great blue heron
Nyctanassa violacea Linnaeus 1758 yellow-crowned night heron | |
Phoebastria cf. albatrus Pallas 1769 short-tailed albatross | |
Meleagris cf. gallopavo Linnaeus 1758 wild turkey | |
Pinguinus impennis Linnaeus 1758 Great auk | |
Mammalia | |
Castoroides dilophidus Martin 1969 giant beaver |