Also known as Reef 2272
Where: Washington County, Arkansas (35.9° N, 94.0° W: paleocoordinates 12.1° S, 35.6° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Pitkin Formation, Chesterian (335.5 - 323.2 Ma)
• within the lower 20 m of the formation
• group of beds-level stratigraphic resolution
Environment/lithology: reef, buildup or bioherm; lithified grainstone and lithified mudstone
Size class: macrofossils
Collection methods: peel or thin section,
Primary reference: G. E. Webb. 1987. Late Mississippian thrombolite bioherms from the Pitkin Formation of northern Arkansas. Geological Society America Bulletin 99:686-698 [W. Kiessling/U. Merkel]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 76852: authorized by Wolfgang Kiessling, entered by Uta Merkel on 04.12.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
| unclassified | |
| Crinoidea | |
|
Crinoidea indet. Miller 1821 Sea lily | |
| unclassified | |
|
Annelida indet. Lamarck 1809 | |
| Brachiopoda | |
|
Brachiopoda indet. Cuvier 1805 | |
| Stenolaemata | |
|
Hexagonellidae indet. Crockford 1947 | |
| Bivalvia | |
|
Bivalvia indet. Linnaeus 1758 clam | |
| Gastropoda | |
|
Gastropoda indet. Cuvier 1795 snail | |
| Anthozoa | |
|
Sutherlandia sp. Cocke and Bowsher 1968 tabulate coral | |
|
Michelinia tenuicula tabulate coral
Michelinia meekana Girty 1910 tabulate coral | |
|
Caninostrotion variabilis horn coral | |
|
Barytichisma ozarkana horn coral | |
|
Leonardophyllum arkansanum horn coral | |
| unclassified | |
|
Porifera indet. Grant 1836 | |
| Hormogoneae | |
|
Girvanella sp. Nicholson and Etheridge 1878 | |
| Porostromata | |
| Cyanophyceae | |
|
? Garwoodia sp. Wood 1941 | |
|
? Aphralysia sp. Garwood 1914 | |
| Florideophyceae | |
|
? Archaeolithophyllum sp. Johnson 1956 | |
| Asphaltina | |
|
Asphaltina sp. Mamet 1972 | |