Where: Florida (27.2° N, 81.9° W: paleocoordinates 27.6° N, 77.9° W)
• coordinate based on nearby landmark
• basin-level geographic resolution
When: Arcadia Formation (Hawthorn Group), Chattian to Chattian (28.1 - 11.6 Ma)
• The Arcadia Formation is a composite sequence containing four high-frequency sequences composed of multiple vertically stacked carbonate cycles. Most cycles do not show evidence of subaerial exposure and were deposited under more temperate conditions, relative to the Suwannee Limestone. The Arcadia Formation in southernmost Florida is bounded by regional unconformities representing third-order sequence boundaries.
• formation-level stratigraphic resolution
Environment/lithology: carbonate
Size class: macrofossils
Collection methods: Compilation of known taxa from Chipola Formation in Florida State. Comprises range on unspecified collecting techniques.
Primary reference: C. W. Oyen and R. W. Portell. 2001. Diversity patterns and biostratigraphy of Cenozoic echinodems from Florida. Palaeogeography, Palaeoclimatology, Palaeoecology 166:193-218 [A. Miller/A. Hendy/A. Hendy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 35020: authorized by Austin Hendy, entered by Austin Hendy on 25.10.2003
Creative Commons license: CC BY (attribution)
Taxonomic list
Thecostraca | |
Balanus humilis Conrad 1846 barnacle | |
Echinoidea | |
Echinoidea indet. Leske 1778 sea urchin | |
Agassizia sp. Valenciennes 1846 heart urchin | |
Rhyncholampas sp. Agassiz 1869 sea urchin | |
Abertella aberti Conrad 1842 sand dollar | |
Asteroidea | |
Astropectinidae indet. Gray 1840 sea star |