Morphology and relationships of Apternodus and other extinct, zalambdodont, placental mammals. Bulletin of the AMNH ; no. 273

Simple item page
dc.contributor.authorAsher, Robert J.en_US
dc.contributor.authorMcKenna, Malcolm C.en_US
dc.contributor.authorEmry, Robert J.
dc.contributor.authorTabrum, Alan R.
dc.contributor.authorKron, Donald G.
dc.date.accessioned2005-10-05T22:06:24Z
dc.date.available2005-10-05T22:06:24Z
dc.date.issued2002en_US
dc.description117 p. : ill., map ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 110-117).en_US
dc.description.abstractWe describe and illustrate new, middle Cenozoic fossils of dentally zalambdodont, North American placentals, including six relatively complete crania of Apternodus and two of Oligoryctes, as well as many partial skulls, mandibles, and teeth of these and other taxa. Several of the new Apternodus specimens are also associated with postcrania. We recognize seven species of Apternodus, three of which are new, formally propose the combination Oligoryctes altitalonidus, and recognize two other genera of small, North American, anatomically zalambdodont placentals, Parapternodus and Koniaryctes. We regard two other taxa previously associated with North American fossil zalambdodonts, one Bridgerian and the other Tiffanian, as valid but do not name them in this paper. In addition, we argue that dental zalambdodonty entails a primary occlusal relationship between the paracone and the ectoflexid, and the reduction or absence of the metacone and talonid basin. A phylogenetic analysis of cranial, dental, and postcranial characters of 30 fossil and Recent taxa leads us to conclude that (1) the Apternodontidae as defined in previous literature is not monophyletic and should be restricted to seven species of Apternodus, (2) the genus Oligoryctes contains at least two species and has a considerably longer geologic record than Apternodus, (3) neither Micropternodus nor currently known Paleocene taxa are closely related to Apternodus or Oligoryctes, and (4) a case can be made for a close relationship among modern soricids, Parapternodus, Koniaryctes, Oligoryctes and Apternodus to the exclusion of other insectivoran-grade taxa. With the use of ordered, multistate character transformations, Solenodon comprises the sister taxon to a soricid-fossil zalambdodont clade.en_US
dc.format.extent6704985 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/440
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, NY : American Museum of Natural Historyen_US
dc.relation.ispartofseriesBulletin of the American Museum of Natural History ; no. 273en_US
dc.subject.lccQH1 .A4 no.273 2002en_US
dc.subject.lcshApternodus.en_US
dc.subject.lcshOligoryctes.en_US
dc.subject.lcshApternodontidae.en_US
dc.subject.lcshOligoryctidae.en_US
dc.subject.lcshMammals, Fossil -- West (U.S.)en_US
dc.subject.lcshMammals, Fossil -- North America.en_US
dc.subject.lcshPaleontology -- Paleogene -- West (U.S.)en_US
dc.subject.lcshPaleontology -- Paleogene -- North America.en_US
dc.subject.lcshPaleontology -- West (U.S.)en_US
dc.subject.lcshPaleontology -- North America.en_US
dc.titleMorphology and relationships of Apternodus and other extinct, zalambdodont, placental mammals. Bulletin of the AMNH ; no. 273en_US
dc.title.alternativeRelationships of Apternodusen_US
dc.typetexten_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
/v2/dspace/ingest/pdfSource/bul/B273.pdf
Size:
6.39 MB
Format:
Adobe Portable Document Format
Description:
Download

Collections

Bulletin of the American Museum of Natural History