Results 81 to 90 of about 27,457 (303)

Marine Mammals (Cetacea and Sirenia) from the Eocene of Gebel Mokattam and Fayum, Egypt: Stratigraphy, Age and Paleoenvironments [PDF]

, 1992
1-84http://deepblue.lib.umich.edu/bitstream/2027.42/48630/2/ID494 ...
Gingerich, Philip D.
core  

The internal crest anatomy of Lambeosaurini (Hadrosauridae: Lambeosaurinae)

The Anatomical Record, EarlyView.
Abstract The supracranial crests of lambeosaurine hadrosaurids have long been a focus of study due primarily to their extreme morphology. The external anatomy of lambeosaurine crests is understood to be highly variable between species, but variation in their internal anatomy is less well understood.
Thomas W. Dudgeon, Courtney Brown, David C. Evans   +2 more
wiley   +1 more source

Paleontology and Geology of the Upper Jurassic Morrison Formation

, 2006
paleontology; geology; Morrison Formation; Upper ...
John R. Foster and Spencer G. Lucas, eds.
core  

A Whole New World [PDF]

, 1972
1-55http://deepblue.lib.umich.edu/bitstream/2027.42/48602/2/ID464 ...
Wright, Jean D. (Jean Davies)
core  

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

Structural Color in Amber-Entombed Wasp: A Detailed Study Using NS-FDTD Simulations

IEEE Access
The multilayer reflectors of insect epidermis can produce unique structural color through interactions with light. Many fossilized insects, like amber-entombed wasps, present structural colors. However, how this multilayer structure and structural colors
Zhuo Hou, Dongsheng Cai, Ran Dong
doaj   +1 more source

Environmental conditions of interstadial (MIS 3) and features of the last glacial maximum on the King George island (West Antarctica)

Лëд и снег, 2015
The interstadial marine deposits stratum was described in the Fildes Peninsula (King George Island) due to field and laboratory investigations during 2008–2011. The stratum fragments occur in the west and north-west parts of peninsula in following forms:
S. R. Verkulich, M. V. Dorozhkina, Z. V. Pushina, A. Tatur, D. I. Sukhomlinov, A. V. Krylov   +5 more
doaj   +1 more source

Permian stratigraphy and paleontology of the Robledo Mountains, New Mexico

, 1998
Permian; stratigraphy; paleontology; Robledo Mountains; New ...
edited by Spencer G. Lucas, John W. Estep and Jerry M. Hoffer
core  

Osteohistology of two phorusrhacids reveals uninterrupted growth strategy

The Anatomical Record, EarlyView.
Abstract Phorusrhacidae were apex predators that primarily dominated South America ecosystems for at least 40 million years with their imposing size and predatory lifestyle—yet some aspects of their biology remain poorly understood. Osteohistology is a tool for understanding growth dynamics and biomechanical adaptations.
Lotta Dreyer, Christian Cooper, Jingmai O'Connor   +2 more
wiley   +1 more source

New Earliest Wasatchian Mammalian Fauna from the Eocene of Northwestern Wyoming: Composition and Diversity in a Rarely Sampled High-Floodplain Assemblage [PDF]

, 1989
1-97http://deepblue.lib.umich.edu/bitstream/2027.42/48628/2/ID492 ...
Gingerich, Philip D.
core