Where: Dorchester County, South Carolina (33.0° N, 80.2° W: paleocoordinates 32.9° N, 73.6° W)
• coordinate estimated from map
When: Ashley Formation (Cooper Group), Rupelian (33.9 - 28.1 Ma)
• early Chattian, NP 24, 30 cm below contact with the overlying Chandler Bridge Formation; Ashley Formation is identified as Rupelian rather than its conventional assignment as Chattian by Weems et al. 2004
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•The Ashley Formation falls within calcareous nannoplankton zone NP24 [103], ranging from 29.6–26.8 Ma [12, 20]. The presence of the dinoflagellate Chiropteridium lobospinosum indicates a minimum age of 28.1 Ma [103, 104]. Together, these constraints imply a late Rupelian age (29.6–28.1 Ma) for the Ashley Formation, which is further supported by a strontium date of 29.1 Ma [105]. (Marx & Fordyce, 2015)
• member-level stratigraphic resolution
Environment/lithology: lagoonal or restricted shallow subtidal; lithology not reported
Size class: macrofossils
Preservation: original phosphate
Collection methods: quarrying, surface (in situ)
Primary reference: A. E. Sanders and L. G. Barnes. 2002. Paleontology of the Late Oligocene Ashley and Chandler Bridge Formations of South Carolina, 2: Micromysticetus rothauseni, a primitive cetotheriid mysticete (Mammalia: Cetacea). Smithsonian Contributions to Paleobiology 93:271-293 [M. Uhen/M. Uhen/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 45777: authorized by Mark Uhen, entered by Mark Uhen on 01.12.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Angiospermae | |
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Anthozoa | |
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Gnathostomata | |
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Mammalia | |
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Squalodontoidea indet. Simpson 1945 toothed whale | |
Micromysticetus rothauseni n. gen. n. sp.
Micromysticetus rothauseni n. gen. n. sp. Sanders and Barnes 2002 whale | |
Dugongidae indet. Gray 1821 dugong | |
Reptilia | |
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Aves | |
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"Pseudodontornithidae indet." = Pelagornithidae
"Pseudodontornithidae indet." = Pelagornithidae Fürbringer 1888 bird |