Results 141 to 150 of about 1,839,493 (296)
Dental crown morphological variation and heterodonty in carcharhiniform sharks
Abstract Elasmobranch teeth are highly mineralized structures that constitute the majority of the fossil record for this group. Despite their taxonomic and evolutionary significance, detailed descriptions of dental morphology remain scarce. The order Carcharhiniformes, the most diverse among sharks, comprises 304 valid species that display remarkable ...
Flávia Zanini, Karla D. A. Soares
wiley +1 more source
Abstract Belonostomus longirostrisis was named for an isolated jaw fragment from freshwater Upper Cretaceous (Campanian) sediments of the Dinosaur Park Formation of Alberta, Canada. Following the description of the Albertan species, numerous isolated cranial and postcranial elements have been collected from the Dinosaur Park Formation and assigned to B.
Mondo Miyazato +4 more
wiley +1 more source
A Glance of the Free Trade Agreement between Mexico and the European Union [PDF]
Mexico has had a notable trade performance in the last years as result of a process of economic liberalisation and internal structural reforms that started in the mid-1980s and consolidated in the 1990s by establishing a network of free trade agreements.
Moises Marcos
core
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 +4 more
wiley +1 more source
Changes in New Mexico Agriculture 1993 [PDF]
Industrial Organization,
Harper, Wilmer M.
core +1 more source
Over the edge: Empirical evidence for the cliff‐edge model of obstetric selection
Abstract The cliff‐edge model of obstetric selection maintains that larger neonates and smaller birth canals confer a positive selective advantage until labor becomes obstructed and vaginal delivery is no longer possible, eliciting an abrupt reduction in fitness.
Laura M. Watson +6 more
wiley +1 more source
Withdrawal notice to Eruption of plaques, hemorrhagic bullae and vesicles
Sabah Osmani +3 more
doaj +1 more source
The largest silesaurid known from South America is described here, demonstrating that silesaurids reached large body sizes in southwestern Gondwana. This discovery further underscores the widespread geographic distribution and temporal persistence of large silesaurids across Pangea, despite faunal turnovers and environmental events such as the Carnian ...
Rodrigo Temp Müller
wiley +1 more source
Mexico's oportunidades program fails to make the grade in NYC [PDF]
A program that pays poor, rural Mexican families to keep their children in school didn't translate well to New York City. The latter's version will end this summer.Education ; Mexico ; New York (N.Y.)
Brett W. Fawley, Luciana Juvenal
core

