Showing papers in "Zoological Journal of the Linnean Society in 2011"

TL;DR: A new phylogenetic analysis is presented that resolves many of the outstanding questions regarding the relationships within Diplodocoidea and examines palaeobiogeographical trends within the group.

TL;DR: A new genus and species of cricetid rodent from the Atlantic Forest of Brazil, one of the most endangered eco-regions of the world, is described, which displays some but not all synapomorphies of the tribe Oryzomyini.

TL;DR: A new species, Goniopholis kiplingi sp.

TL;DR: Although the authors cannot yet pinpoint the phylogenetic placement of Necrosuchus amongst caimans, it nevertheless establishes a caimanine presence in South America by the Early Palaeocene, suggesting multiple dispersal events between North and South America, even if the modern caiman assemblage is monophyletic.

TL;DR: An important implication of this study is that Equus asinus, the African wild ass was found to be the sister taxon of Asiatic asses and zebras, diverging from the common ancestor with caballine horses 2 Mya.

TL;DR: The most likely candidate for the initial geographical range of Order Cypriniformes to be the south-eastern area of Mesozoic Laurasia (present-day southern Asia, excluding the Indian subcontinent) is considered.

TL;DR: The combination of diverse data sources (morphology, 16S and 28S sequences) and inclusion of unconserved regions of the alignments improved the recovery of monophyletic families, and a consensus is beginning to emerge in the recognition of three main assemblages.

TL;DR: The holotype of Andesaurus delgadoi is re-describe, comprising dorsal, sacral, and caudal vertebrae, as well as limb and pelvic elements, and putative titanosaur synapomorphies are recognized.

TL;DR: This work investigates species delimitation of the slender-bodied fishes in the Leporinus cylindriformis group using SMATR and MorphoJ and demonstrates the utility of the allometric corrections that they provide, and offers easy and effective approaches to such allometrically informed taxonomy.

TL;DR: The phylogenetic relationships of this taxon are tested through an extensive cladistic analysis that recovers Tehuelchesaurus as a non-titanosauriform camarasauromorph, deeply nested within Neosauropoda.

TL;DR: The most comprehensive phylogenetic hypothesis to date of butterflies in the tribe Satyrini is inferred using maximum parsimony and model-b to obtain a hypothesis of relationships.

TL;DR: Details of the cranial anatomy are revealed and show that the skull is unexpectedly specialized in such an early representative of the Ornithischia, including the closely packed, hypsodont crowns and ‘warping’ of the occlusal surfaces seen in the cheek dentition and jaw musculature.

TL;DR: The appendicular morphology of S. maxhechti strengthens the interpretation that the Baurusuchidae were active land-dwelling predators in the Upper Cretaceous of south-eastern Brazil, occuping ecological niches typical of small to medium-sized theropod dinosaurs.

TL;DR: The phylogenetic analysis indicates that Doswellidae is the closest large monophyletic entity to Archosauria, which achieved a wide palaeolatitudinal distribution during the late Middle and Late Triassic time span.

TL;DR: Based on the cladistic hypothesis that results from the total evidence analysis, the evolution of six morphological character systems within Tetragnathidae is studied: spinneret spigots, respiratory structures, trichobothria, chelicerae, and male and female genitalia.

TL;DR: The results demonstrate that previously recognized species group relationships were misled by phenotypic convergence; Sphenomorphus is widely paraphyletic; and multiple lineages have independently invaded the Philippines.

TL;DR: It is finally noted that recent calibrations of molecular analyses, which indicate an origin of extant charadriiform lineages in the Cretaceous, are based on incorrectly identified fossils.

TL;DR: Pietraroiasuchus ormezzanoi resolves the phylogenetic position of the controversial P. trinquei, and is crucial in enabling an extensive understanding of the family Hylaeochampsidae.

TL;DR: A matrix based on data from all three hypotheses and analysed key taxa phylogenetically using both Bayesian inference and parsimony supported the temnospondyl hypothesis of lissamphibian origins.

TL;DR: A phylogenetic and biogeographically condign arrangement of camaenid land snails is provided as the basis for future elaborations, highlighting (1) the repeated radiation of shell forms, and (2) that the current higher taxonomy is unacceptable.

TL;DR: The findings reveal that convergent evolution of shell shape occurs in scallops, and suggest that selection for shell shape and behaviour may be important in the diversification of the group.

TL;DR: The scaling of crania and femora to total body length of metriorhynchids is noticeably different from that of extant crocodylians, indicating that extant croCodylian are not ideal proxies for size reconstruction of extinct taxa that deviate from their semi-aquatic morphotype.

TL;DR: A small new basal crocodyliform, Fruitachampsa callisoni gen. nov., sp, is represented by several partial skeletons from the Morrison Formation at the Fruita Paleontological Area near Grand Junction, Colorado, and is the first occurrence of a shartegosuchid in North America.

TL;DR: A comprehensively sampled, three-gene molecular phylogenetic analysis of the Valvatacea is presented, suggesting that Antarctic valvataceans may be derived from sister taxa in adjacent regions.

TL;DR: Bembe et al. as mentioned in this paper combined chemical, morphological, and genetic data for an integrated characterization of the two lineages, E. viridissima and E.dilemma.

TL;DR: A hypothesis of an older fauna present in the Antarctic during the Eocene, which was succeeded by a modern Antarctic fauna that is represented by the recently derived Antarctic Asteriidae and other forcipulatacean lineages is suggested.

TL;DR: The phylogenetic analysis used for testing the phylogenetic affinities of L. nodosus depicts Sebecidae as the sister group of Baurusuchidae, forming a monophyletic Sebecosuchie that is deeply nested within Notosuchia.

TL;DR: The efficiency of the jaw apparatus among cats is quite consistent; therefore, the different evolutionary trends of jaw mechanics seem to be caused by the casuistic fixation of phenotypical variations, rather than by specific adaptative selections.