A new species of Megalonychidae (Mammalia, Xenarthra) from the Quaternary of Poco Azul (Bahia, Brazil)
Identifieur interne : 006566 ( Main/Exploration ); précédent : 006565; suivant : 006567A new species of Megalonychidae (Mammalia, Xenarthra) from the Quaternary of Poco Azul (Bahia, Brazil)
Auteurs : Castor Cartelle [Brésil] ; Gerardo De Iuliis [Canada] ; Francois Pujos [Argentine, Pérou]Source :
- Comptes rendus. Palévol [ 1631-0683 ] ; 2008.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
The new genus and species Ahytherium aureum (Mammalia, Xenarthra, Megalonychidae) from the Quaternary of Poço Azul (Bahia, Brazil) is described. It is the first Brazilian megalonychid known from reasonably complete and well-preserved remains. Purported Brazilian megalonychids described in the past, such as Ocnopus gracilis and Xenocnus cearesis, are noted as belonging to other sloth clades, and the acceptance by past paleontologists of the existence of 'strange' megalonychids in Brazil is shown to be erroneous. Ahytherium aureum, in fact, exhibits typical megalonychid morphology. It differs from other known members of Megalonychidae in several characters, including a markedly shortened, but high rostral region, with dorsally inflated frontals, wide zygomatic processes of the frontal, narrow, blade-like and anterolaterally oriented lacrimals, curved, slender and oval caniniforms, gracile humerus with less developed deltopectoral shelf, and relatively distal position of the greater trochanter of the femur. A second specimen from Sao Paolo state is tentatively assigned to the new genus and species.
Affiliations:
Links toward previous steps (curation, corpus...)
- to stream PascalFrancis, to step Corpus: 000199
- to stream PascalFrancis, to step Curation: 000502
- to stream PascalFrancis, to step Checkpoint: 000383
- to stream Main, to step Merge: 006655
- to stream Main, to step Curation: 006566
Le document en format XML
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<s2>30535-610. Belo Horizonte, Minas Gerais</s2>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bahia Brazil</term>
<term>Mammalia</term>
<term>Quaternary</term>
<term>Xenarthra</term>
<term>biostratigraphy</term>
<term>morphology</term>
<term>new taxa</term>
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<term>Xenarthra</term>
<term>Quaternaire</term>
<term>Morphologie</term>
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<term>Biostratigraphie</term>
<term>Ahytherium aureum</term>
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<front><div type="abstract" xml:lang="en">The new genus and species Ahytherium aureum (Mammalia, Xenarthra, Megalonychidae) from the Quaternary of Poço Azul (Bahia, Brazil) is described. It is the first Brazilian megalonychid known from reasonably complete and well-preserved remains. Purported Brazilian megalonychids described in the past, such as Ocnopus gracilis and Xenocnus cearesis, are noted as belonging to other sloth clades, and the acceptance by past paleontologists of the existence of 'strange' megalonychids in Brazil is shown to be erroneous. Ahytherium aureum, in fact, exhibits typical megalonychid morphology. It differs from other known members of Megalonychidae in several characters, including a markedly shortened, but high rostral region, with dorsally inflated frontals, wide zygomatic processes of the frontal, narrow, blade-like and anterolaterally oriented lacrimals, curved, slender and oval caniniforms, gracile humerus with less developed deltopectoral shelf, and relatively distal position of the greater trochanter of the femur. A second specimen from Sao Paolo state is tentatively assigned to the new genus and species.</div>
</front>
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<li>Ontario</li>
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