Ctenoconularia delphiensis is a new species of the Conulata obtained from the base of the New Albany Shale (upper Devonian) at Delphi, Ind. This new species differs from other members of the genus in possessing several pustules opposite the transverse ridges in the interfacial grooves. The new taxon is based on 150 specimens from a phosphatic-nodular bed containing other fossils rich in calcium phosphate. The conulariid-bearing rock is a coarse-grained mature quartz sandstone interpreted as deposited under shallow marine conditions with penecontemporaneous formation of phosphatic nodules.

Maroney, D. G., and Orr, R. W., 1974, Ctenoconularia delphiensis, a new species of Conulata from the New Albany Shale (Upper Devonian) at Delphi, Indiana: Indiana Geological Survey Occasional Paper 7, 6 p., 1 fig.

You may also like:

Keywords: fossil, paleontology, New Albany Shale, Devonian

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
812-855-7636 (phone)
812-855-2862 (fax)

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.

Updated 8/19/2020