Mesozoic origin for West Indian insectivores

Roca, Alfred L.; Bar‐Gal, Gila Kahila; Eizirik, Eduardo; Helgen, Kristofer M.; María, Roberto; Springer, Mark S.; O’Brien, Stephen J.; Murphy, William J.

doi:10.1038/nature02597

Cited by 127 publications

(141 citation statements)

References 21 publications

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“…Other dated splits include 97 Mya (95% CI = 90 -106 Mya) for Boreoeutheria, 91 Mya (95% CI = 84 -99 Mya) for Euarchontoglires, and 87 Mya (95% CI = 82 -93 Mya) for Laurasiatheria. The remaining ordinal divergence times (Supplemental Table 2) are similar to those found in previous studies (Douady and Douzery 2003;Springer et al 2003;Roca et al 2004).…”

Section: A Revised Molecular Timescale For Placental Evolutionsupporting

confidence: 76%

“…Given the support for Atlantogenata, we re-estimated a molecular timescale for placental mammals using a large nuclear+mito-chondrial data set Roca et al 2004) and a Bayesian relaxed clock approach (Thorne et al 1998;, adding a constraint on the monophyly of Afrotheria+Xenartha (Atlantogenata). We also allowed the tree to support the recent Pegasoferae hypothesis (Nishihara et al 2006), which places bats in a monophyletic group with carnivores, pangolins, and perissodactyls.…”

Section: A Revised Molecular Timescale For Placental Evolutionmentioning

confidence: 99%

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Using genomic data to unravel the root of the placental mammal phylogeny

Murphy¹,

Pringle²,

Crider³

et al. 2007

Genome Res.

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405

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The phylogeny of placental mammals is a critical framework for choosing future genome sequencing targets and for resolving the ancestral mammalian genome at the nucleotide level. Despite considerable recent progress defining superordinal relationships, several branches remain poorly resolved, including the root of the placental tree. Here we analyzed the genome sequence assemblies of human, armadillo, elephant, and opossum to identify informative coding indels that would serve as rare genomic changes to infer early events in placental mammal phylogeny. We also expanded our species sampling by including sequence data from >30 ongoing genome projects, followed by PCR and sequencing validation of each indel in additional taxa. Our data provide support for a sister-group relationship between Afrotheria and Xenarthra (the Atlantogenata hypothesis), which is in turn the sister-taxon to Boreoeutheria. We failed to recover any indels in support of a basal position for Xenarthra (Epitheria), which is suggested by morphology and a recent retroposon analysis, or a hypothesis with Afrotheria basal (Exafricoplacentalia), which is favored by phylogenetic analysis of large nuclear gene data sets. In addition, we identified two retroposon insertions that also support Atlantogenata and none for the alternative hypotheses. A revised molecular timescale based on these phylogenetic inferences suggests Afrotheria and Xenarthra diverged from other placental mammals ∼103 (95-114) million years ago. We discuss the impacts of this topology on earlier phylogenetic reconstructions and repeat-based inferences of phylogeny.

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Section: A Revised Molecular Timescale For Placental Evolutionsupporting

confidence: 76%

Section: A Revised Molecular Timescale For Placental Evolutionmentioning

confidence: 99%

Using genomic data to unravel the root of the placental mammal phylogeny

Murphy¹,

Pringle²,

Crider³

et al. 2007

Genome Res.

Self Cite

405

342

View full text Add to dashboard Cite

show abstract

“…Last but not least, Solenodon is not part of the set of Douady et al (2002b) and other topologies. However, a recent analysis (Roca et al, 2004) found Solenodon to be basal to the Lipotyphla with the topology for the remainder of the order being similar to that used here. Therefore, in a separate analysis, we added Solenodon to the tree (see discussion, Laurasiatheria).…”

Section: Methodsmentioning

confidence: 85%

“…Solenodon is not part of the set. However, a recent analysis (Roca et al, 2004) found Solenodon to be basal to the Lipotyphla with the topology for the remainder of the order being similar to that used here. Therefore, in a separate analysis (data not shown), we added Solenodon to the tree and reanalyzed those characters for which data are available (Wislocki,'40).…”

Section: Laurasiatheria Ferungulata and Lipotyphlamentioning

confidence: 85%

Evolutionary transformations of fetal membrane characters in Eutheria with special reference to Afrotheria

2005

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Analysis of molecular data sets has provided new insights into higher-level relationships of living Eutheria, including the recognition of Afrotheria as a novel taxon. This offers an opportunity to take a fresh look at the evolution of organ systems, including some that are little used in traditional systematics. In the present study, we attempted a reconstruction of the evolution of characters associated with placentation, the fetal membranes and the female reproductive tract. The evolutionary history of 21 characters has been traced, based on a current hypothesis of eutherian relationships, by applying the computer program MacClade. Accordingly, the analysis provides a first comprehensive interpretation of the stem species pattern of Eutheria. Of particular note, this pattern includes an endotheliochorial chorioallantoic placenta. The reconstructed pattern of Eutheria does not change in the basal nodes of the group. Thus, no character transformations occur on the stem lineages of Laurasiatheria or Euarchontoglires, and even Afrotheria has mostly plesiomorphic character conditions. However, two character transformations occur on the common stem lineage of Afrotheria and its sister taxon Xenarthra, i.e., amniogenesis by cavitation instead of folding and the precocial state of the newborn. In addition, we recognized one character transformation on the stem lineage of Afrotheria, i.e., the occurrence of a four-lobed allantoic sac. Thus, contrary to previous assertions, it is possible to identify morphological characters that could be synapomorphic for this novel taxon.

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“…Phylogenetic analyses of morphological and molecular data combined with details of habitat and diet revealed that the differences between the two groups are predominantly owing to "phylogenetic conservatism" (i.e., descent from two distinct evolutionary lineages), although the dispersal of several species from one group to the other has reduced these differences. Roca et al (2004) used fossil data to explain the distribution of an island species. Phylogenetic analyses of genetic and fossil evidence suggest that around 76 million years ago the solenodons -small, burrowing insectivores from the West Indies -diverged from other insectivores rather than from the tenrecs or the rodents.…”

Section: Biogeographymentioning

confidence: 99%

Towards a unified science of cultural evolution

2006

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We suggest that human culture exhibits key Darwinian evolutionary properties, and argue that the structure of a science of cultural evolution should share fundamental features with the structure of the science of biological evolution. This latter claim is tested by outlining the methods and approaches employed by the principal subdisciplines of evolutionary biology and assessing whether there is an existing or potential corresponding approach to the study of cultural evolution. Existing approaches within anthropology and archaeology demonstrate a good match with the macroevolutionary methods of systematics, paleobiology, and biogeography, whereas mathematical models derived from population genetics have been successfully developed to study cultural microevolution. Much potential exists for experimental simulations and field studies of cultural microevolution, where there are opportunities to borrow further methods and hypotheses from biology. Potential also exists for the cultural equivalent of molecular genetics in "social cognitive neuroscience," although many fundamental issues have yet to be resolved. It is argued that studying culture within a unifying evolutionary framework has the potential to integrate a number of separate disciplines within the social sciences.

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Mesozoic origin for West Indian insectivores

Cited by 127 publications

References 21 publications

Using genomic data to unravel the root of the placental mammal phylogeny

Using genomic data to unravel the root of the placental mammal phylogeny

Evolutionary transformations of fetal membrane characters in Eutheria with special reference to Afrotheria

Towards a unified science of cultural evolution

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