Sun Oil Co. well, Core 44 (3552-3568 feet): Lochkovian, Florida

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Tentaculita - Tentaculitidae
Gastropoda - Bellerophontida - Plectonotidae
Bivalvia - Trigoniida - Eoschizodidae
"Four crushed or distorted specimens of which one is articulated"
Bivalvia - Grammysiidae
"Five specimens, four right valves and one left valve"
unclassified
"Incomplete anterior ends of a right and a left valve"
Bivalvia - Modiomorphida - Modiomorphidae
Modiomorpha sp. Hall and Whitfield 1869
"One crushed right valve"
Bivalvia - Cardiida - Kalenteridae
"Five incomplete specimens of which three are right and two are left valves"
Bivalvia - Ostreida - Pterineidae
"One deformed left valve"
"One left and one right valve"
Bivalvia - Pectinida - Pterinopectinidae
"Many small shells"
Bivalvia - Nuculanida - Malletiidae
Arisaigia sp. McLearn 1918
"One posterior fragment"
"A deformed right valve"
Bivalvia - Nuculanida - Cucullellidae
"One left valve"
"Four right and four left valve"
Eurypterida - Pterygotidae
Plotnick 1999
Ostracoda
"Smooth"
Ostracoda - Palaeocopida - Bolliidae
Bolliidae indet. Boucek 1936
Plotnick 1999
"bollid ostracode"
see common names

Geography
Country:United States State/province:Florida County:Suwannee
Coordinates: 30.3° North, 82.8° West (view map)
Paleocoordinates:51.8° South, 35.0° West (Wright 2013)
Basis of coordinate:stated in text
Geographic resolution:small collection
Time
Period: Devonian Epoch: Early Devonian
Stage: Lochkovian 10 m.y. bin: Devonian 1
Key time interval: Lochkovian
Age range of interval: 419.62 - 413.02 m.y. ago
Stratigraphy
Formation:Unknown
Local section:Tillis No. 1 Core #44 Local bed:3552-3568 ft
Local order:bottom to top
Stratigraphic resolution:group of beds
Stratigraphy comments: Listed as Llanvirn\Llandeilo, but seems incorrect. Unnamed formation. Lochkovian? Pojeta et al. 1976 suggest earliest Devonian based on the bivalves.
Lithology and environment
Primary lithology:black poorly lithified "shale"
Lithology description: "black shale"
Environment:marine indet.
Geology comments: "Shallow water, marine. A BA1-2 assignment is reasonable." Author's analysis of life habits leads them to shallow water conclusion, but their logic is questionable. Probably a cool-water assemblage
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Spatial orientation:life position
Articulated whole bodies:some
Size sorting:poor
Fragmentation:none
Spatial resolution:autochthonous
Collection methods and comments
Reason for describing collection:biostratigraphic analysis
Collection method comments: Well core, sample covers 4.88 m (16 ft.) section; early Devonian, "about Lochkovian"
Metadata
Also known as:Sun Oil No. 1 J. H. Tillis Borehole core 44
Database number:75630
Authorizer:P. Novack-Gottshall Enterer:P. Hearn
Modifier:P. Novack-Gottshall Research group:marine invertebrate
Created:2007-10-23 09:50:36 Last modified:2025-02-22 15:12:02
Access level:the public Released:2007-10-23 09:50:36
Creative Commons license:CC0
Reference information

Primary reference:
25550. J. Pojeta, J. Kriz, and J. M. Berdan. 1976. Silurian-Devonian pelecypods and Paleozoic stratigraphy of subsurface rocks in Florida and Georgia and related Silurian pelecypods from Bolivia and Turkey. United States Geological Survey Professional Paper 879:1-32 [P. Novack-Gottshall/P. Hearn/P. Wagner]

Secondary references:

86690 E.N. Kjellesvig-Waering. 1950. A new Silurian eurypterid from Florida. Journal of Paleontology 24(2):229-231 [R. Plotnick/R. Plotnick]
4261 R. E. Plotnick. 1999. Habitat of Llandoverian-Lochkovian eurypterids. In A. J. Boucot, J. D. Lawson (eds.), Paleocommunities - a case study from the Silurian and Lower Devonian 106-136 [M. Foote/M. Foote/P. Wagner]