Affinities of ‘hyopsodontids’ to elephant shrews and a Holarctic origin of Afrotheria

@article{Zack2005AffinitiesO,
  title={Affinities of ‘hyopsodontids’ to elephant shrews and a Holarctic origin of Afrotheria},
  author={Shawn P. Zack and Tonya A. Penkrot and Jonathan I. Bloch and Kenneth D. Rose},
  journal={Nature},
  year={2005},
  volume={434},
  pages={497-501}
}
Macroscelideans (elephant shrews or sengis) are small-bodied (25–540 g), cursorial (running) and saltatorial (jumping), insectivorous and omnivorous placental mammals represented by at least 15 extant African species classified in four genera. Macroscelidea is one of several morphologically diverse but predominantly African placental orders classified in the superorder Afrotheria by molecular phylogeneticists. The distribution of modern afrotheres, in combination with a basal position for… 

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Paleocene emergence of elephant relatives and the rapid radiation of African ungulates

  • E. Gheerbrant
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    Proceedings of the National Academy of Sciences
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Early Tertiary mammals from North Africa reinforce the molecular Afrotheria clade

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...

References

SHOWING 1-10 OF 33 REFERENCES

A new genus of Macroscelidea (Mammalia) from the Eocene of Algeria: a possible origin for elephant-shrews

The phylogenetic analysis suggests also that the Macroscelidea-Microhyus clade is closely related to the Proboscidea, and provides evidence for a macroscelid-tethytherian relationship.

Relationships of Endemic African Mammals and Their Fossil Relatives Based on Morphological and Molecular Evidence

Analyses of anatomical and DNA sequence data run on a parallel supercomputer that include fossil taxa support the inclusion of tenrecs and golden moles in the Afrotheria, an endemic African clade of placental mammals, and support the position of AfroTheria as well-nested, not basal, within Placentalia.

THE OSTEOLOGY OF RHOMBOMYLUS (MAMMALIA, GLIRES): IMPLICATIONS FOR PHYLOGENY AND EVOLUTION OF GLIRES

This study consists of a taxonomic revision of the genus, a detailed description of the osteological morphology, extensive analyses on morphological characters, analyses on phylogeny, discussions on divergence time of the Glires, and analyses on functional morphology of mastication and locomotion.

Early tertiary elephant-shrews from Egypt and the origin of the Macroscelidea.

The dental anatomy of the Fayum macroscelideans provides evidence for a derivation of the order from within the Condylarthra, and indicates that previous hypotheses of a close phylogenetic relationship between macroscelidans and either lagomorphs, erinaceotans, or tree-shrews are unlikely.

Molecular evidence for multiple origins of Insectivora and for a new order of endemic African insectivore mammals.

The traditional views regarding the mammalian order Insectivora are that the group descended from a single common ancestor and that it is comprised of the following families: Soricidae (shrews),

Extrinsic Snout Musculature in Afrotheria and Lipotyphla

The extrinsic snout musculature in an assortment of lipotyphlan and afrotherian mammals does not support Afrotheria as presently proposed, but is consistent with an AfroTheria that does not include chrysochlorids and tenrecids.

HIGHER‐LEVEL RELATIONSHIPS OF THE RECENT EUTHERIAN ORDERS: MORPHOLOGICAL EVIDENCE

Comparison morphology and paleontology offer some compelling hypotheses that comprise a framework for studies of macromolecular traits that support groupings of the Recent orders of eutherian mammals.

A Morphological Basis for Assessing the Phylogeny of the “Tenrecoidea” (Mammalia, Lipotyphla)

A phylogenetic analysis of 35 mammalian taxa focusing on the lipotyphlan family Tenrecidae, based on 193 morphological character states across 71 characters, is undertaken to test several hypotheses

Resolution of the Early Placental Mammal Radiation Using Bayesian Phylogenetics

Crown-group Eutheria may have their most recent common ancestry in the Southern Hemisphere (Gondwana), and placental phylogeny is investigated using Bayesian and maximum-likelihood methods and a 16.4-kilobase molecular data set.