Published June 4, 2015
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Figure 14 in Late Viséan (late Mississippian) ammonoids from the Barnett Shale, Sierra Diablo Escarpment, Culberson County, Texas, USA
- 1. D. Korn & Grand Staircase-Escalante National Monument, 669 S. Highway 89A, Kanab, UT 84741, USA
- 2. J. E. Harrell & Museum für Naturkunde, Leibniz Institute for Evolution and Biodiversity Science, Invalidenstrasse 43,
- 3. L. L. Lambert & Noble Energy Inc., Houston, TX 77070, USA
- 4. Department of Geological Sciences, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA
Description
Figure 14. Choctawites choctawensis (Shumard, 1863). (a) Cross section of topotype USNM 119504 from Brushy Creek, Oklahoma; × 2.5 (from Gordon, 1965). (b) Cross section of specimen 71 from Ada, Oklahoma; × 2.5. (c) Cross section of specimen 26-1 from San Saba; × 2.5. (d–f), Ontogenetic development of the conch width index (ww / dm), umbilical width index (uw / dm), and whorl expansion rate (WER) of all available specimens (the cross sections of specimens (b) and (c) from Ada and San Saba were produced by R. Kant; the original specimens is stored in the collections of the USNM, acetate peels are stored in the collections of the GPI Tübingen).
Notes
Published as part of Titus, A. L., Korn, D., Harrell, J. E. & Lambert, L. L., 2015, Late Viséan (late Mississippian) ammonoids from the Barnett Shale, Sierra Diablo Escarpment, Culberson County, Texas, USA, pp. 81-104 in Fossil Record 18 (2) on page 99, DOI: 10.5194/fr-18-81-2015, http://zenodo.org/record/11585625
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