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Feeding in Turtles: Understanding Terrestrial and Aquatic Feeding in a Diverse but Monophyletic Group
Turtles are one of the oldest known sauropsid orders that appeared about 240 million years ago. Within the vertebrates, they have evolved the most...
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The Evolution of the Maxillary Canal in Probainognathia (Cynodontia, Synapsida): Reassessment of the Homology of the Infraorbital Foramen in Mammalian Ancestors
In mammals, the infraorbital canal provides a passage for the infraorbital ramus of the maxillary branch of the trigeminal nerve. The infraorbital...
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Changes in Ontogenetic Allometry and their Role in the Emergence of Cranial Morphology in Fossorial Spiny Rats (Echimyidae, Hystricomorpha, Rodentia)
All evolutionary modifications of morphology in adult animals presuppose occurrence of changes in developmental programming. While some developmental...
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Feeding in Snakes: Form, Function, and Evolution of the Feeding System
Snakes are a diverse group of squamate reptiles characterized by a unique feeding system and other traits associated with elongation and...
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Morpho-Functional Analysis Using Procrustes Superimposition by Static Reference
In conventional geometric morphometric analyses of limb long bones, differences in the evolutionary capacity of articular surfaces and non-articular...
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Swimmers, Diggers, Climbers and More, a Study of Integration Across the Mustelids’ Locomotor Apparatus (Carnivora: Mustelidae)
Phenotypic integration, defined as the coordinated co-variation of parts of an organism can be an important constraint on phenotypic diversification....
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P
a family of relatively small ornithischian dinosaurs, named for a very thick skull roof. Bipedal and generally herbivorous, they have a great deal of...
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Unraveling the cryptic life of the southern naked-tailed armadillo, Cabassous unicinctus squamicaudis (Lund, 1845), in a Neotropical wetland: Home range, activity pattern, burrow use and reproductive behaviour
The natural history of the southern naked-tailed armadillo Cabassous unicinctus squamicaudis is not well known. Here, we provide basic information...
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The Role of Rudimentation in Evolution
Processes of regression and rudimentation are deeply involved in the evolution of life and are as important as constructive evolution. They occur in...
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Phylogenetic and functional implications of the ear region anatomy of Glossotherium robustum (Xenarthra, Mylodontidae) from the Late Pleistocene of Argentina
Several detailed studies of the external morphology of the ear region in extinct sloths have been published in the past few decades, and this...
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Aboveground activity, reproduction, body temperature and weight of armadillos (Xenarthra, Chlamyphoridae) according to atmospheric conditions in the central Monte (Argentina)
Hairy armadillos are generalist species widely distributed in South America. Three of these species, Chaetophractus vellerosus, C. villosus and Zaedyus...
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Influence of Evolutionary Allometry on Rates of Morphological Evolution and Disparity in strictly Subterranean Moles (Talpinae, Talpidae, Lipotyphla, Mammalia)
The adaptation to a particular function could directly influence the morphological evolution of an anatomical structure as well as its rates. The...
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The Postcranial Musculoskeletal System of Xenarthrans: Insights from over Two Centuries of Research and Future Directions
Xenarthrans stand out among mammals for various reasons, one of them being their musculoskeletal postcranial specializations. Extant armadillos,...
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Getting a head in hard soils: Convergent skull evolution and divergent allometric patterns explain shape variation in a highly diverse genus of pocket gophers (Thomomys)
BackgroundHigh morphological diversity can occur in closely related animals when selection favors morphologies that are subject to intrinsic...
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Craniodental and forelimb specializations for digging in the South American subterranean rodent Ctenomys (Hystricomorpha, Ctenomyidae)
We explored the distribution of tooth- and scratch-digging specializations in species of the subterranean rodent Ctenomys (tuco-tucos) from diverse...
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A new species of small-eared shrew in the Cryptotis thomasi species group from Costa Rica (Mammalia: Eulipotyphla: Soricidae)
We describe a new species of small-eared shrew, genus Cryptotis Pomel, 1848 (Eulipotyphla: Soricidae), from near the community of Monteverde in the...
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Phylogenetic conservatism in skulls and evolutionary lability in limbs – morphological evolution across an ancient frog radiation is shaped by diet, locomotion and burrowing
BackgroundQuantifying morphological diversity across taxa can provide valuable insight into evolutionary processes, yet its complexities can make it...
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Why we age — a new evolutionary view
This article introduces a new evolutionary theory of aging, which suggests that aging is the result of imperfections in cell turnover in organisms....
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Scaling effect on the mid-diaphysis properties of long bones—the case of the Cervidae (deer)
How skeletal elements scale to size is a fundamental question in biology. While the external shape of long bones was intensively studied, an...
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Endless forms most beautiful: the evolution of ophidian oral glands, including the venom system, and the use of appropriate terminology for homologous structures
The differentiated serous-secreting dental glands of caenophidian snakes are diverse in form despite their developmental homology. This variation...
