Exploration of the Red River of Louisiana, in the year 1852 / by Randolph B. Marcy ; assisted by George B. McClellan. Page: 192 of 368
This book is part of the collection entitled: Rare Book and Texana Collections and was provided to The Portal to Texas History by the UNT Libraries Special Collections.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
176
APPENDIX E.--PALAEONTOLOGY.
PRODUCTUS CORA, D'Orbig.
* Prod. cora, D'Orbig., 1842, Palmeont. Voy. dans l'Amer. Merid., p. 55,
pl. 5, fig. 8, 9, 10.
P. tenuistriatus, Verneuil, 1845, Geol. Russ. et. Ural., vol. 2, p. 260,
pl. 16, fig. 6.
P. cora, Koninck, 1847, Monog. du Genre Prod. et Chonetes, p. 50,
pl. iv. a, b, et pl. v, fig. 2, a-d.
The specimens from Arkansas are all imperfect, yet they are plainly
referable to this species. It is one of the most characteristic fossils of
the carboniferous beds of Kentucky, Indiana, Illinois, and Missouri. It
occurs in Washington and Crawford counties, in gray sub-crystalline
limestone.
PRODUCTUS COSTATUS, Sowerby.*
PALAONTOLOGY, P1. 1, fig. 2.
This Productus occurs with the preceding species, in 'Washington
county, Arkansas, and, like it, has a very extended geographical range
in this country and Europe.
TEREBRATULA SUBTILITA, Hall.
PALEONTOLOGY, P1. 4, fig. 8.
Terebratula subtilita, Hall, Stansbury's Expedition to Great Salt Lake,
409, pl. xi, fig. 1, a-b, 2, a-c.
This shell is very common in the superior members of the carboniferous
formation in Illinois, Indiana, and Kentucky, where it usually is
found with Archimedipora archimedes, Pentremites florealis, and Productus
punctatus. Its vertical range being rather limited, it constitutes
one of our most useful guides in studying the relative position of the
various members of the carboniferous strata. This shell is very variable
in its characters, so that we are liable to multiply species from its varieties,
unless a number of specimens are under examination. Some individuals
are very much inflated; the dorsal valve exhibits a profound
' For synonyms and references see Koninck's Monog. du Gen. Prod. et Cbonetes,
p. 92.
Upcoming Pages
Here’s what’s next.
Search Inside
This book can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Book.
Marcy, Randolph Barnes. Exploration of the Red River of Louisiana, in the year 1852 / by Randolph B. Marcy ; assisted by George B. McClellan., book, 1854; Washington, DC. (https://texashistory.unt.edu/ark:/67531/metapth6105/m1/192/: accessed April 25, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Special Collections.