scholarly journals Evolutionary stasis, ecophenotypy and environmental controls on ammonite morphology in the Late Cretaceous (Maastrichtian) Western Interior Seaway, USA

Palaeontology ◽  
2020 ◽  
Vol 63 (5) ◽  
pp. 791-806
Author(s):  
James D. Witts ◽  
Neil H. Landman ◽  
Melanie J. Hopkins ◽  
Corinne E. Myers
Keyword(s):  
Late Cretaceous ◽  
Western Interior Seaway ◽  
Environmental Controls ◽  
Evolutionary Stasis

scholarly journals EVOLUTIONARY STASIS, ECOPHENOTYPY, AND ENVIRONMENTAL CONTROLS ON AMMONITE MORPHOLOGY IN THE LATE CRETACEOUS (MAASTRICHTIAN) WESTERN INTERIOR SEAWAY, USA

2019 ◽  
Author(s):  
James D. Witts ◽  
◽  
Neil H. Landman ◽  
Melanie J. Hopkins ◽  
Corinne Myers
Keyword(s):  
Late Cretaceous ◽  
Western Interior Seaway ◽  
Environmental Controls ◽  
Evolutionary Stasis

BIOTIC RESPONSE TO A LATE CRETACEOUS ASH FALL: COMPARATIVE FAUNAL ANALYSES FROM A METHANE SEEP AND NON-SEEP ECOSYSTEM WITHIN THE WESTERN INTERIOR SEAWAY

2018 ◽  
Author(s):  
Shannon K. Brophy ◽  
◽  
Matthew P. Garb ◽  
Neil H. Landman ◽  
James D. Witts ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Methane Seep ◽  
Western Interior Seaway ◽  
Ash Fall ◽  
Biotic Response

PRESENCE OF JUVENILE AMMONITES AT LATE CRETACEOUS METHANE SEEPS (WESTERN INTERIOR SEAWAY)

2018 ◽  
Author(s):  
Alison J. Rowe ◽  
◽  
Neil H. Landman ◽  
Matthew P. Garb ◽  
James D. Witts ◽  
...  
Keyword(s):  
Late Cretaceous ◽  
Western Interior Seaway ◽  
Methane Seeps

scholarly journals Endemicity analysis of global Cretaceous dinosaurian faunas

1992 ◽  
Vol 6 ◽  
pp. 132-132
Author(s):  
Thomas R. Holtz
Keyword(s):  
North America ◽  
South America ◽  
Late Cretaceous ◽  
Late Jurassic ◽  
Continental Drift ◽  
Gobi Desert ◽  
Western Interior Seaway ◽  
Faunal Assemblages ◽  
Terrestrial Vertebrate ◽  
Herbivore Communities

It has often been assumed that the intensively studied dinosaur faunal assemblages of western North America and the Gobi Desert of Mongolia and China represent “typical” Late Cretaceous terrestrial vertebrate communities. This assumption has led to a paleoecological scenario in which a global ecological shift occurs from the dominance of high-browsing saurischian (i.e., sauropod) to low-browsing ornithischian (i.e., iguanodontian, marginocephalian, ankylosaurian) herbivore communities. Furthermore, the assumption that the Asiamerican dinosaur faunas are communities “typical” of the Late Cretaceous has forced the conclusion that the sauropod-dominated Argentine population must have been an isolated relict ecosystem of primitive taxa (i.e., titanosaurid sauropods, abelisaurid ceratosaurs). Recent discoveries and reinterpretations of other Late Cretaceous assemblages, however, seriously challenge these assumptions.Paleogeography and paleobiogeography have demonstrated that terrestrial landmasses became progressively fractionated from the Late Jurassic (Kimmeridgian-Tithonian) to the Late Cretaceous (Campanian), owing to continental drift and the development of large epicontinental seas (the Western Interior Seaway, the Turgai Sea, etc.). The Maastrichtian regressions resulted in the reestablishment of land connection between long isolated regions (for example, western and eastern North America). These geographic changes are reflected in changes in the dinosaurian faunas. These assemblages were rather cosmopolitan in the Late Jurassic (Morrison, Tendaguru, and Upper Shaximiao Formations) but became more provincialized throughout the Cretaceous.Cluster analysis of presence/absence data for the theropod, sauropod, and ornithischian clades indicates that previous assumptions for Late Cretaceous dinosaurian paleoecology are largely in error. These analyses instead suggest that sauropod lineages remained a major faunal component in both Laurasia (Europe, Asia) and Gondwana (South America, Africa, India, and Australia). Only the pre-Maastrichtian Senonian deposits of North America were lacking sauropodomorphs. Furthermore, the abelisaurid/titanosaurid fauna of Argentina is, in fact, probably more typical of Late Cretaceous dinosaurian communities. Rather, it is the coelurosaurian/ornithischian communities of Asiamerica (and particularly North America) that are composed primarily of dinosaurs of small geographic distribution. Thus, the Judithian, Edmontonian, and Lancian faunas, rather than being typical of the Late Cretaceous, most likely represent an isolated island-continent terrestrial vertebrate population, perhaps analogous to the extremely isolated vertebrate communities of Tertiary South America. Furthermore, the shift from high-browsing to low-browsing herbivore “dynasties” more likely represents a local event in Senonian North America and does not represent a global paleoecological transformation of Late Cretaceous dinosaur community structure.

The climate of the Late Cretaceous: New insights from the application of the carbonate clumped isotope thermometer to Western Interior Seaway macrofossil

2013 ◽  
Vol 362 ◽  
pp. 51-65 ◽  
Author(s):  
K.J. Dennis ◽  
J.K. Cochran ◽  
N.H. Landman ◽  
D.P. Schrag
Keyword(s):  
Late Cretaceous ◽  
Western Interior Seaway ◽  
Clumped Isotope

scholarly journals Iron limitation in the Western Interior Seaway during the Late Cretaceous OAE 3 and its role in phosphorus recycling and enhanced organic matter preservation

2016 ◽  
Vol 449 ◽  
pp. 135-144 ◽  
Author(s):  
Allyson Tessin ◽  
Nathan D. Sheldon ◽  
Ingrid Hendy ◽  
Anthony Chappaz
Keyword(s):  
Organic Matter ◽  
Late Cretaceous ◽  
Iron Limitation ◽  
Western Interior Seaway ◽  
Phosphorus Recycling

Remains of Clidastes Cope, 1868, an unexpected mosasaur in the upper Campanian of NW Germany

2005 ◽  
Vol 84 (3) ◽  
pp. 213-220 ◽  
Author(s):  
M.W. Caldwell ◽  
C.G. Diedrich
Keyword(s):  
North America ◽  
Late Cretaceous ◽  
Vertebral Column ◽  
Gulf Coast ◽  
Anterior Part ◽  
Western Interior Seaway ◽  
Southern Sweden ◽  
Nw Germany ◽  
The Village ◽  
Upper Campanian

AbstractThe mosasaurine Clidastes sp. is recognised from cranial and post-cranial remains collected at four localities in NW Germany. Cranial material was found in pelagic turbiditic marls which crop out near the village of Beckum, while post-cranial skeletal elements were collected from sandy limestones exposed near the villages of Schöppingen, Coesfeld and Billerbeck. In stratigraphic order, the units producing these specimens of Clidastes are the Coesfeld, Baumberge and Beckum formations of late Campanian (Late Cretaceous) age. The cranial material comprises the anterior part of a skull and a single isolated tooth, while post-cranial bones comprise a few isolated vertebrae and a partial skeleton including forelimb bones and an articulated vertebral column. Clidastes is known to date from the western North Sea Basin (England), southern Sweden, as well as from North America (Western Interior Seaway and Gulf Coast).

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