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  1. Palaeobiodiversity and Palaeoenvironments
  2. Palaeobiodiversity and Palaeoenvironments : Volume 82
  3. Palaeobiodiversity and Palaeoenvironments : Volume 82, Issue 1, June 2002
  4. Feeding specializations in rodents
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Palaeobiodiversity and Palaeoenvironments : Volume 97
Palaeobiodiversity and Palaeoenvironments : Volume 96
Palaeobiodiversity and Palaeoenvironments : Volume 95
Palaeobiodiversity and Palaeoenvironments : Volume 94
Palaeobiodiversity and Palaeoenvironments : Volume 93
Palaeobiodiversity and Palaeoenvironments : Volume 92
Palaeobiodiversity and Palaeoenvironments : Volume 91
Palaeobiodiversity and Palaeoenvironments : Volume 90
Palaeobiodiversity and Palaeoenvironments : Volume 89
Palaeobiodiversity and Palaeoenvironments : Volume 88
Palaeobiodiversity and Palaeoenvironments : Volume 87
Palaeobiodiversity and Palaeoenvironments : Volume 86
Palaeobiodiversity and Palaeoenvironments : Volume 85
Palaeobiodiversity and Palaeoenvironments : Volume 84
Palaeobiodiversity and Palaeoenvironments : Volume 83
Palaeobiodiversity and Palaeoenvironments : Volume 82
Palaeobiodiversity and Palaeoenvironments : Volume 82, Issue 2, December 2002
Palaeobiodiversity and Palaeoenvironments : Volume 82, Issue 1, June 2002
Foreword
Concepts of Functional, Engineering and Constructional Morphology: Introductory Remarks
Potentials and limits of Morphometry in the understanding of Squamate Osteological Structures
DinoMorph: Parametric modeling of skeletal structures
The Tyrannosaurid metatarsus: Bone strain and inferred ligament function
Morphometric analyses of humeral shapes in Hadrosaurids (Ornithopoda, Dinosauria)
Forelimb biomechanics of nonavian theropod dinosaurs in predation
Convergent evolution of the maxilla-dental-complex among carnivorous archosaurs
Morphological evidence for bipedalism in the Late Triassic prolacertiform reptileLangobardisaurus
Burrowing performance and the role of limb reduction inLerista (Scincidae, Lacertilia)
Characteristics of vertical climbing in African apes
Functional morphology of coral shape and passive hydrodynamic self-righting in recentManicina areolata
The hydrodynamic significance of the graptoloid nema in scandent graptoloids
Feeding specializations in rodents
Food-specialization and structural parameters of dental patterns of Arvicolinae (Rodentia, Mammalia)
Functional significance of ontogenetic gradients in the enamel ridge pattern of the upper cheek dentition of the miocene hipparionin horseCormohipparion occidentale (Equidae, Perissodactyla)
The biological potential of encrusting bryozoans
Finite element analysis in vertebrate palaeontology
Biomechanical investigations on the skulls of reptiles and mammals
Primates and engineering principles: Applications to craniodental mechanisms in ancient terrestrial predators
The functional morphology of the pectoral fin girdle of the Spiny Dogfish (Squalus acanthias): Implications for the evolutionary history of the pectoral girdle of vertebrates
Aspects of crustacean evolution — The relevance of morphology for evolutionary reconstruction
The early evolution of the planet earth and the origin of life
The origin of metazoa and the main evolutionary lineages of the animal Kingdom: The gallertoid hypothesis in the light of modern research
The evolution of the placozoa: A new morphological model
The origin and early evolution of chordates: The ‘Hydroskelett-Theorie’ and new insights towards a metameric ancestor
Anagenesis of early birds reconsidered
Evolution of organ systems: Phylogeny, function and reciprocal illumination
The biosphere as a morphoprocess and a new look at the concepts of organism and individuality
Palaeobiodiversity and Palaeoenvironments : Volume 81
Palaeobiodiversity and Palaeoenvironments : Volume 80
Palaeobiodiversity and Palaeoenvironments : Volume 79
Palaeobiodiversity and Palaeoenvironments : Volume 78
Palaeobiodiversity and Palaeoenvironments : Volume 77

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Feeding specializations in rodents

Content Provider Springer Nature Link
Author Schmidt Kittler, Norbert
Copyright Year 2002
Abstract The particular pathway of evolution of the mammalian order of the rodents as compared to the other herbivorous mammals is described. In their dentition the most important change consisted in the replacement of the primitive molar plan of the pantotherian ancestors by completely new dental structures. The new evolutionary options aquired by this, are one of the reasons for the particular evolutionary success and the great diversity of niches formed by this group. The newly developed family-specific dental patterns soon became genetically fixed, to the effect that functional optimizations — that means adaptive evolution — could only be realized through allometric change of shape and proportions. This was possible in connection with increasing hypsodonty. New descriptive parameters allowing to characterize the divergent adaptations are defined. Among them the relative amount of enamel within the occlusal surface is the most reliable indicator of feeding specialization. A comparison reveals that the small rodents in their hypsodont evolution mostly diminished the crowding in their dental patterns, whereas in the evolution of several very large mammalian herbivores quite the contrary occured. The functional reasons for this are discussed. Arguments are brought foreward that the morphological optimization of the molar dentitions of rodents can attain degrees not realizable in large hypsodont herbivores.
Starting Page 141
Ending Page 152
Page Count 12
File Format PDF
ISSN 00372110
Journal Palaeobiodiversity and Palaeoenvironments
Volume Number 82
Issue Number 1
Language English
Publisher Springer-Verlag
Publisher Date 2002-01-01
Publisher Place Berlin, Heidelberg
Access Restriction Subscribed
Subject Keyword Feeding specialization Rodents evolution Paleontology Biodiversity Animal Systematics/Taxonomy/Biogeography Plant Systematics/Taxonomy/Biogeography Freshwater & Marine Ecology
Content Type Text
Resource Type Article
Subject Paleontology
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