Persistence of the Western Interior Seaway: Historical background and significance of ichnogenus Rhizocorallium in Paleocene strata, south-central Wyoming
DW Boyd, JA Lillegraven - Rocky Mountain Geology, 2011 - pubs.geoscienceworld.org
We report and describe abundant, well-preserved, parallel-sided, U-shaped spreite burrows
(Rhizocorallium) in the upper part of the latest Cretaceous into early Paleocene Ferris …
(Rhizocorallium) in the upper part of the latest Cretaceous into early Paleocene Ferris …
A new stratigraphic framework and constraints for the position of the Paleocene–Eocene boundary in the rapidly subsiding Hanna Basin, Wyoming
Abstract The Paleocene–Eocene strata of the rapidly subsiding Hanna Basin give insights in
sedimentation patterns and regional paleogeography during the Laramide orogeny and …
sedimentation patterns and regional paleogeography during the Laramide orogeny and …
Tectonic and paleogeographic implications of late Laramide geologic history in the northeastern corner of Wyoming's Hanna Basin
JA Lillegraven, AW Snoke… - Rocky Mountain …, 2004 - pubs.geoscienceworld.org
Abstract The Hanna Basin of south-central Wyoming has been considered anomalous
among other Laramide depocenters of the Rocky Mountain region because of its …
among other Laramide depocenters of the Rocky Mountain region because of its …
Revised stratigraphic relationships within the lower Fort Union Formation (Tullock member, Garfield County, Montana, USA) provide a new framework for examining …
ABSTRACT The Hell Creek region of northeastern Montana is an excellent study system to
explore the rise to dominance of mammalian faunas after the Cretaceous–Paleogene (K …
explore the rise to dominance of mammalian faunas after the Cretaceous–Paleogene (K …
Late Laramide tectonic fragmentation of the eastern greater Green River Basin, Wyoming
JA Lillegraven - Rocky Mountain Geology, 2015 - pubs.geoscienceworld.org
Abstract Today's greater Green River Basin is limited to the southwestern quarter of
Wyoming. From late in the Cretaceous into late Paleocene time, however, sedimentary …
Wyoming. From late in the Cretaceous into late Paleocene time, however, sedimentary …
Paleocene (65–63 and 58.5 ma) marine flooding and 62–60 ma sediment bypass in southern Wyoming, USA: Implications for Laramide sediment flux to the Gulf of …
Sedimentary structures unique to tidally influenced environments and unambiguously
salinity-stressed marine ichnofossil assemblages in the lower Paleocene Ferris and upper …
salinity-stressed marine ichnofossil assemblages in the lower Paleocene Ferris and upper …
Problems with Paleocene palynozones in the Rockies: Hell's Half Acre revisited
MC McKenna, JA Lillegraven - Journal of Mammalian Evolution, 2005 - Springer
The scheme of palynostratigraphic zonation most widely applied to interbasinal correlation
of Paleocene rocks in the Rocky Mountain region of North America is fundamentally flawed …
of Paleocene rocks in the Rocky Mountain region of North America is fundamentally flawed …
On the palynomorph-based biozones in Paleogene strata of Rocky Mountain basins
DJ Nichols - 2009 - archives.datapages.com
Lillegraven and McKenna (2008) published (in this journal) a sixth paper in a series of
papers that attempt to cast doubt on the validity of the palynomorph-based biozones (the “P …
papers that attempt to cast doubt on the validity of the palynomorph-based biozones (the “P …
[LIBRO][B] Molar morphometrics and diet in North American condylarths
TA Penkrot - 2010 - search.proquest.com
The order “Condylarthra” was one of the most abundant and diverse mammalian groups
during the Paleocene and Eocene of North America. Despite the ubiquity of condylarths at …
during the Paleocene and Eocene of North America. Despite the ubiquity of condylarths at …
Re-evaluating palynomorph-based biozones in Paleogene strata of Rocky Mountain basins
JA Lillegraven, MC McKenna - 2008 - archives.datapages.com
We evaluate the definitions of palynomorph-based biozones (the 'P-zone'system) as used to
chronicle lower Tertiary (especially Paleocene) strata in Rocky Mountain basins. We also …
chronicle lower Tertiary (especially Paleocene) strata in Rocky Mountain basins. We also …