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Network dynamics of eukaryotic LTR retroelements beyond phylogenetic trees
The evolutionary history of LTR retroelements can be traced as a time-evolving network that depends on phylogenetic patterns, epigenetic host-factors and phenotypic plasticity. Expand
Jaws and teeth of the earliest bony fishes
Andreolepis and Lophosteus are not only the oldest but also the most phylogenetically basal securely identified osteichthyans known so far, indicating that they can be assigned to the stem group. Expand
Enameloid microstructure in the oldest known chondrichthyan teeth
Results show that a superficial cap of SCE is present in the oldest shark teeth known, which suggest its presence in the most basal chondrichthyans. Expand
Grist for Riedl's mill: a network model perspective on the integration and modularity of the human skull.
It is concluded that it is the morphological integration of each group of bones that defines the semi-hierarchical organization of the human skull, reflecting fundamental differences in the ontogenetic patterns of growth and the structural constraints that generate each module. Expand
Squamation and ecology of thelodonts
Classic morphometrics and discriminant analysis are used to characterize the squamation patterns of a significant number of extant shark species whose ecology is well known and suggest a remarkable ecological diversity in thelodonts. Expand
Structural Constraints in the Evolution of the Tetrapod Skull Complexity: Williston’s Law Revisited Using Network Models
This work analyzes patterns of skull organization captured in network models and suggests that the evolutionary trend of increasing morphological complexity can be caused as a result of a structural constraint, the systematic loss of less connected bones during development. Expand
Testing models of dental development in the earliest bony vertebrates, Andreolepis and Lophosteus
These fossil remains have no bearing on the nature of the dentition in osteichthyans and, indeed, the results raise questions concerning the homologies of these bones and the phylogenetic classification of Andreolepis and Lophosteus. Expand
Tooth replacement rates in early chondrichthyans: a qualitative approach
This study provides strong evidences of an extremely slow dental replacement in this primitive chondrichthyan based on three independents analyses: statistical analysis of the wear degree, demonstrating that teeth remain functional for a long period of time, and estimations of size increments between teeth for some recent sharks whose rates of replacement were known prove that Δs is inversely proportional to the rate of replacement. Expand
The evolution of gigantism in active marine predators
It is proposed that shifts towards higher metabolic levels can enable the same activity and feeding strategy to be maintained at bigger body sizes, offering a satisfactory explanation for the evolution of gigantism in active predators, including a vast quantity of fossil taxa. Expand
Lonchidion derenzii, sp. nov., a New Lonchidiid Shark (Chondrichthyes, Hybodontiforms) from the Upper Triassic of Spain, with Remarks on Lonchidiid Enameloid
http://zoobank.org/urn:lsid:zoobank.org:pub:0A620E00-7B8D-4D7C-8BEE-7063C7BA0204 Citation for this article: Manzanares, E., C. Pla, C. Martínez-Pérez, H. Ferrón, and Héctor Botella. 2016. LonchidionExpand