Fernvale Limestone

Fernvale Limestone
Stratigraphic range: Ordovician
Type	Formation
Underlies	Cason Shale
Overlies	Kimmswick Limestone
Thickness	0 to 100+ feet in Arkansas [1]
Lithology
Primary	Limestone
Location
Region	Arkansas, Tennessee
Country	United States
Type section
Named by	Charles Willard Hayes and Edward Oscar Ulrich [2]

The Fernvale Limestone is a geologic formation in Alabama, Arkansas, Illinois, Missouri, Oklahoma, and Tennessee. ^[1] It preserves fossils dating back to the Ordovician period.

Paleontology

Brachiopods

• Lepidocyclus

L. cooperi ^[3]

L. oblongus ^[3]

Conodonts

Acodus A. unicostatus [4] Acontiodus A. alveolaris [4] Ambalodus A. triangularis [4] Amorphognatus A. ordovicica [4] Aphelognathus A. polita [4] Belodina B. compressa [4] B. inclinata [4] B. ornata [4] B. penna [4] B. profunda [4] Cordylodus C. delicatus [4] C. flexuosus [4]

Dichognathus D. brevis [4] D. scotti [4] D. typica [4] Distacodus D. falcatus [4] Drepanodus D. homocurvatus [4] D. suberectus [4] Eoligonodina E. delicata [4] Icriodella I. superba [4] Keislognathus K. gracilis [4] Oistodus O. abundans [4] O. inclinatus [4] O. parallelus [4] O. venustus [4]

Ozarkodina O. inclinata [4] O. tenuis [4] Paltodus P. trigonius [4] Panderodus P. compressus [4] P. ellisoni [4] P. fornicalis [4] P. gracilis [4] P. homosimilaris [4] P. panderi [4] P. simplex [4] P. sulcatus [4] Phragmodus P. undatus [4] Prioniodina P. furcata [4]

Rhynchognathodus R. divaricatus [4] R. typicus [4] Sagittodontus S. robustus [4] Scolopodus S. insculptus [4] Trichonodella T. exacta [4] T. diminuta [4] T. tenuis [4] Zygognathus Z. curvata [4] Z. mira [4]

See also

• Earth sciences portal
• United States portal
• Paleontology portal

• List of fossiliferous stratigraphic units in Arkansas
• List of fossiliferous stratigraphic units in Tennessee
• Paleontology in Arkansas
• Paleontology in Tennessee

References

1. McFarland, John David (2004) [1998]. "Stratigraphic summary of Arkansas" (PDF). Arkansas Geological Commission Information Circular. 36: 6–7. Archived from the original (PDF) on 2016-12-21. Retrieved 2018-01-11.
2. Hayes, C.W.; Ulrich, E.O. (1903). "Description of the Columbia quadrangle" (PDF). U.S. Geological Survey Geologic Atlas of the United States. 95: 2.
3. Amsden, Thomas W. (1983). "The Late Ordovician brachiopod genera Lepidocyclus and Hiscobeccus" (PDF). Oklahoma Geological Survey Bulletin. 132: 36–44, 52–59 (plates). Retrieved 4 February 2018.
4. Craig, William (1968). The stratigraphy and conodont paleontology of Ordovician and Silurian strata, Batesville district, Independence and Izard counties, Arkansas (PhD). The University of Texas.

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021.