Hannahatchee Creek ‘‘longwalk’’ outcrop (Cretaceous to of the United States)
Also known as locality 1
Where: Stewart County, Georgia (32.2° N, 85.0° W: paleocoordinates 34.1° N, 56.7° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Blufftown Formation, Late/Upper Santonian to Late/Upper Santonian (85.8 - 70.6 Ma)
• many layers are fossiliferous, but only one contains vertebrates
• bed-level stratigraphic resolution
Environment/lithology: transition zone or lower shoreface; argillaceous, silty claystone and fine-grained, concretionary, micaceous, shelly/skeletal, gray, silty, calcareous sandstone
• silty, fine sandy clay, medium sandy clay, silty clay, (several units with varying amounts of silt, sand and clay in each). Unit bearing vertebrates is "Clayey fine sand and silty clay, micaceous, lignitic, very fossiliferous, olive-gray (5 Y 3/2). Calcareous, sandy concretions abundant throughout unit. Zones of molluscan hash locally present. Prominent erosional horizon in lower meter, traceable throughout exposure, features abundant vetebrate bones and teeth, and very-large-oyster bioherm. "
Size classes: macrofossils, microfossils
Preservation: trace, replaced with phosphate
Primary reference: D. R. Schwimmer. 1986. Late Cretaceous fossils from the Blufftown Formation (Campanian) in western Georgia. The Mosasaur 3:109-123 [J. Alroy/E. Leckey/E. Leckey]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 35289: authorized by John Alroy, entered by Erin Leckey on 24.11.2003, edited by Kaitlin Maguire, Mark Uhen and Matthew Carrano
Creative Commons license: CC BY (attribution)
Taxonomic list
• IHay (1908) reviewed the systematics of the Peritresius ornatus, and included a description that had been reported by Cope (1878). This turtle almost certainly came from this locality. Cope collected other material from the Blufftown for which exact locality information is not available.
Show authors, comments, and common names
| Reptilia | |
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Hadrosaurinae indet.5 Lambe 1918 hadrosaurine caudal, CCK-88-16-1; caudal, CCK-90-17-1; L MC III, CCK-85-2-1; dentary, CCK-79-3-1; tooth crown, CCK-90-4-1
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Appalachiosaurus montgomeriensis1 Carr et al. 2005 coelurosaur L MT IV, CCK-87-5-1; metapodial shaft fragments, CCK83-81-7, 85-1-2; R radius and ulna, CCK-84-4-7, 8
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"Crocodilia indet." = Crocodylia
"Crocodilia indet." = Crocodylia Owen 1842 crocodilian | |
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Thoracosaurus neocesariensis De Kay 1842 crocodilian | |
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Mosasauridae indet. Gervais 1852 mosasaur
Prognathodon sp. Dollo 1889 mosasaur
Halisaurus sp. Marsh 1869 mosasaur
Platecarpus sp. Cope 1869 mosasaur | |
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"Bothremys barberi" = Chedighaii barberi Schmidt 1940 sideneck turtle CSU-SSK-81-7-1, neural bone; CSU-BRK-83-1-2, costals 1 and 2; CSU-K-85-7-4, right otic chamber and basisphenoid, identification confirmed in Gaffney et al. (2006)
"Chedighaii barberi" = Chedighaii barberi3 Schmidt 1940 sideneck turtle CSUK-09-02-03, CSUK-09-02-04, CSUK-96-03-1
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Cheloniidae indet. Bonaparte 1832 sea turtle | |
| Coelacanthimorpha | |
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| Actinopteri | |
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Paralbula casei Estes 1969 | |
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Albula sp. Gronow 1763 bonefish | |
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Enchodus cf. petrosus Cope 1874 | |
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Stephanodus sp. Zittel 1883 | |
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Xiphactinus audax Leidy 1870 | |
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Amiidae indet. Huxley 1861 bowfin | |
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Lepisosteus sp. Agassiz 1843 gar | |
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Anomoeodus phaseolus Hay 1899 | |
| Chondrichthyes | |
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Rhombodus levis Cappetta and Case 1975 stingray | |
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Brachyrhizodus wichitaensis Romer 1942 eagle ray | |
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Ptychotrygon vermiculata Cappetta 1975 ray | |
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Pseudohypolophus sp. Cappetta and Case 1975 guitarfish | |
"Ginglymostoma globidens" = Plicatoscyllium globidens
"Ginglymostoma globidens" = Plicatoscyllium globidens Cappetta and Case 1975 nurse shark | |
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Pseudocorax affinis Agassiz 1843 mackerel shark | |
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Scapanorhynchus texanus Roemer 1852 goblin shark | |
"Cretolamna appendiculata" = Cretalamna appendiculata
"Cretolamna appendiculata" = Cretalamna appendiculata Agassiz 1835 mackerel shark C. appendiculata lata
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Squalicorax kaupi Agassiz 1843 crow shark | |
"Plicatolamna borodini" = Protolamna borodini
"Plicatolamna borodini" = Protolamna borodini Cappetta and Case 1975 mackerel shark | |
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Squatina hassei Leriche 1929 angel shark | |
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Heterodontus sp. de Blainville 1816 bullhead shark | |
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Lonchidion babulskii Cappetta and Case 1975 elasmobranch | |
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Hybodus sp. Agassiz 1834 elasmobranch | |
| Cephalopoda | |
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Placenticeras sp. Meek 1876 ammonite | |
| Bivalvia | |
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Bivalvia indet. Linnaeus 1758 clam | |
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Crassostrea cusseta oyster | |
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| Coccolithophyceae | |
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Calculites obscurus5 Deflandre 1959 | |
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Reinhardtites anthophorus5 Deflandre 1959 | |