Zobrazeno 1 - 10
of 111
pro vyhledávání: '"William A. Cobban"'
Autor:
William A. Cobban, Dee Ann Cooper, Margaret S. Stevens, James B. Stevens, Ireneusz Walaszczyk, Roger W. Cooper
Publikováno v:
Acta Geologica Polonica. 67:547-565
The upper lower Cenomanian through middle Santonian (Upper Cretaceous) of the Boquillas Formation in the Big Bend Region of Trans-Pecos Texas consists of a marine carbonate succession deposited at the southern end of the Western Interior Seaway. The
Autor:
William A. Cobban, Stephen C. Hook
Publikováno v:
Acta Geologica Polonica. 67:1-30
Echinoids are rare in the Upper Cretaceous of the Western Interior, where fewer than 60 unique occurrences are known to date, most of these represented by only a few tests or isolated spines. A notable exception is the Carthage coal field (Socorro Co
Autor:
Stephen C. Hook, William A. Cobban
Publikováno v:
Acta Geologica Polonica. 66:609-626
Lopha staufferi (Bergquist, 1944) is a medium-sized, ribbed, Late Cretaceous oyster with a slightly curved axis and a zigzag commissure; it appears suddenly and conspicuously in upper Cenomanian rocks in the Western Interior Basin of the United State
Autor:
William A. Cobban
Publikováno v:
Acta Geologica Polonica. 66:587-608
This contribution documents the record of the late Cretaceous ammonite Placenticeras Meek, 1876, from the late Cenomanian of Texas and the southern part of the U. S. Western Interior up to the late Middle Campanian zone of Baculites scotti, reconstru
Autor:
William A. Cobban, Ireneusz Walaszczyk
Publikováno v:
Cretaceous Research. 59:30-68
Inoceramid bivalves of the upper Albian and lower Cenomanian of the United States Western Interior are revised, Eleven species-level taxa and three genera are described. Two new species, Gnesioceramus mowriensis , characterizing the Mowry Shale of th
Publikováno v:
Sedimentology. 63:781-808
Sequence stratigraphic analysis of four widely spaced outcrops of middle Cenomanian to middle Turonian strata deposited in the Western Interior foreland basin in southern New Mexico, USA, defines ten sequence boundaries in a marine shale-rich interva
Publikováno v:
American Museum Novitates. 3781:1-39
We describe Hoploscaphites gilberti, n. sp. (Ammonoidea: Ancyloceratina), from the Upper Cretaceous (middle-upper Campanian) Pierre Shale spanning the zones of Baculites scotti and Didymoceras nebrascense in Colorado, Wyoming, Montana, and South Dako
Publikováno v:
Acta Geologica Polonica. 62:581-594
Walaszczyk, I., Lees, J.A., Peryt, D., Cobban, W.A. and Wood, C.J. 2012. Testing the congruence of the microfossil versus microfossil record in the Turonian-Coniacian boundary succession of the Wagon Mound-Springer composite section (NE New Mexico, U
If the base of the Maastrichtian Stage is placed at the first appearance ofthe belemniteBelemnella lanceolatain Western Europe, the boundary between the Campanian and Maastrichtian stages in the U.S. Western Interiormay lie between the zones ofBaculi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa6e8e7c2ab7ac33bd2d6316db56c833
https://ora.ox.ac.uk/objects/uuid:c6b866bd-22bf-4380-ae1d-508caf48b7d6
https://ora.ox.ac.uk/objects/uuid:c6b866bd-22bf-4380-ae1d-508caf48b7d6
New collections from the Marshalltown Formation and basal Mount Laurel Sand along the Chesapeake and Delaware Canal in Delaware clarify the ammonite dating of the interval. The Marshalltown Formation yields Pachydiscus (Pachydiscus) sp., Menuites por
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::befaed5c47c083eb8d0f48467cf1ffb3
https://ora.ox.ac.uk/objects/uuid:dfe7687a-702b-4fd4-8d53-a55d9c98349c
https://ora.ox.ac.uk/objects/uuid:dfe7687a-702b-4fd4-8d53-a55d9c98349c