ABSTRACT: Samples from the Jacobs Chapel Bed of the New Albany Shale in southern Indiana yielded a diverse and extremely abundant conodont fauna on which this study is based. Twenty genera are considered indigenous and are represented by 57 named species, none of which is new. Siphonodella is the most abundant genus and Polygnathus communis is the most abundant species. The average number of generically identifiable conodonts exclusive of Hindeodella is approximately 5,800 specimens per kilogram of sample. Precise correlation and zonation are not possible, but the Jacobs Chapel Bed is Kinderhookian in age and correlates approximately with the middle and upper parts of the Hannibal Shale of the Mississippi Valley. It probably lies within the Siphonodella duplicata s.s. and the S. quadruplicata Assemblage Zones established in the Mississippian Valley.
Rexroad, C. B. 1969, Conodonts from the Jacobs Chapel Bed (Mississippian) of the New Albany Shale in southern Indiana: Indiana Geological Survey Bulletin 41, 55 p., 2 fig., 9 pl.
You may also like:
Can't find what you're looking for? Feel free to contact us directly:
Indiana Geological and Water Survey
1001 E. 10th St.
Bloomington, IN 47405
IGS Return Policy
- Original sales receipt required.
- Returns accepted within 30 days of purchase date.
- Refund will be issued by the same method of payment as purchased.
- Products must be returned in the same new condition as purchased.
- Refunds on custom orders and digital products are NOT allowed.
- Customers are responsible for paying shipping costs to return products.