Lower Triassic ammonoids of North America
Read Online

Lower Triassic ammonoids of North America

  • 592 Want to read
  • ·
  • 67 Currently reading

Published by U.S. Gov"t. Print. Off. in Washington .
Written in English



  • North America.


  • Ammonoidea.,
  • Paleontology -- North America.,
  • Paleontology -- Triassic.

Book details:

Edition Notes

Statementby James Perrin Smith.
SeriesGeological Survey (U.S.). Geological Survey professional paper ;, no. 167, Geological Survey professional paper ;, no. 167.
LC ClassificationsQE75 .P9 no. 167
The Physical Object
Paginationv, 199 p. :
Number of Pages199
ID Numbers
Open LibraryOL253188M
LC Control Numbergs 32000180

Download Lower Triassic ammonoids of North America


Lower Triassic ammonoids of North America. [James Perrin Smith; Geological Survey (U.S.),] Home. WorldCat Home About WorldCat Help. Search. Search for Library Items Search for Lists Search for Electronic books Electronic government information: Additional Physical Format: Print version: Smith, James Perrin, texts All Books All Texts latest This Just In Smithsonian Libraries FEDLINK (US) Genealogy Lincoln Collection. National Emergency Library. Top American Libraries Canadian Libraries Universal Library Community Texts Project Gutenberg Biodiversity Heritage Library Children's Library. Open Library. Full text of "Ammonoids of the Late Scythian.   Smith, J. P., , Lower Triassic Ammonoids of North America, U.S.G.S. Professional Paper , p., 81 pls. Posted by Kevin Bylund at AM 5 comments: Email This BlogThis! Share to Twitter Share to Facebook Share to Pinterest.   Compared with Nevada (low palaeolatitude), the diversity of ammonoids of BC (mid‐palaeolatitude) appears to be much lower, and accurate correlations with Nevada are few, suggesting little exchange along the Palaeopacific margin of North America during the Middle Triassic (Bucher , a, b; Monnet & Bucher a).

By BERNHARD KUMMEL, Museum of Comparative Geology, Harvard University, Cambridge, Massachusetts. (Received for publication, 12 March ) Summary. Four species of Lower Triassic (Scythian) ammonoids are recorded from. Malakoff Hill, Wairaki Downs, Southland. The assemblage (O'Wenites d. O. koeneni, Flemingites cf. lidacensis, Subvishnuites 'welt,qri, and W3,omingites d. Lower Triassic Ammonoids of North America. US Geological Survey Professional Paper Ophiceras in Fossilworks/Paleodb; This Ceratitida-related article is a stub. You can help Wikipedia by expanding it This page was last edited on 12 September , at Beyrichites is an extinct genus in the ammonoids cephalopod, order Ceratitida from the Lower and Middle Triassic of southern Europe, Asia, and western North America. Beyrichites has an involute, discoidal shell with a narrowly arched venter and sigmoidal ribbing that tends to disappear on the outer whorl. The suture is subammonitic, meaning the saddles are serrate as .   Jourdan, F. et al. 40Ar/39Ar ages of CAMP in North America: implications for the Triassic–Jurassic boundary and the 40 K decay constant bias. Lithos , .

  Monnet C, Bucher H (b) Anisian (Middle Triassic) ammonoids from North America: quantitative biochronology and biodiversity. Stratigraphy – (–) Google Scholar Monnet C, Bucher H () Ammonite-based correlations in the Cenomanian-lower Turonian of north-west Europe, central Tunisia and the Western Interior (North America).   Smith JP () Lower Triassic ammonoids of North America. US Geol Surv Prof Pap – Google Scholar Spath LF () Catalogue of the fossil Cephalopoda in the British Museum (Natural History). Monnet C, Bucher H (b) Anisian ammonoids from North America: quantitative biochronology and biodiversity. NGF Abstracts and Proceedings, 3, – Google Scholar Monnet C, Brack P, Bucher H, Rieber H () Ammonite-based correlation of the middle/late Anisian boundary (Middle Triassic) between Nevada and the Southern Alps. The Thaynes Group is a marine unit that thins from northwest to southeast across Utah, where it interfingers with the terrestrial Moenkopi Group. The limestones and shales of the Thaynes Group reflect deposition within the Sonoma Foreland Basin, and.