Chewing through the Miocene: an examination of the feeding musculature in the ground sloth Hapalops from South America (Mammalia: Pilosa)
Identifieur interne : 000970 ( Main/Exploration ); précédent : 000969; suivant : 000971Chewing through the Miocene: an examination of the feeding musculature in the ground sloth Hapalops from South America (Mammalia: Pilosa)
Auteurs : Virginia L. Naples [États-Unis] ; Robert K. Mcafee [États-Unis]Source :
- F1000Research [ 2046-1402 ] ; 2014.
Abstract
Url:
DOI: 10.12688/f1000research.3282.1
PubMed: 25075299
PubMed Central: 4097365
Affiliations:
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Chewing through the Miocene: an examination of the feeding musculature in the ground sloth
<italic>Hapalops</italic> from South America (Mammalia: Pilosa)</title><author><name sortKey="Naples, Virginia L" sort="Naples, Virginia L" uniqKey="Naples V" first="Virginia L." last="Naples">Virginia L. Naples</name><affiliation wicri:level="1"><nlm:aff id="a1">Department of Biological Sciences, Northern Illinois University, Illinois, 60115, USA</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biological Sciences, Northern Illinois University, Illinois, 60115</wicri:regionArea><wicri:noRegion>60115</wicri:noRegion></affiliation></author><author><name sortKey="Mcafee, Robert K" sort="Mcafee, Robert K" uniqKey="Mcafee R" first="Robert K." last="Mcafee">Robert K. Mcafee</name><affiliation wicri:level="1"><nlm:aff id="a2">Department of Biological & Allied Health Sciences, Ohio Northern University, Ada, Ohio, 45810, USA</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biological & Allied Health Sciences, Ohio Northern University, Ada, Ohio, 45810</wicri:regionArea><wicri:noRegion>45810</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">25075299</idno><idno type="pmc">4097365</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4097365</idno><idno type="RBID">PMC:4097365</idno><idno type="doi">10.12688/f1000research.3282.1</idno><date when="2014">2014</date><idno type="wicri:Area/Pmc/Corpus">000545</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000545</idno><idno type="wicri:Area/Pmc/Curation">000545</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">000545</idno><idno type="wicri:Area/Pmc/Checkpoint">000435</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Checkpoint">000435</idno><idno type="wicri:Area/Ncbi/Merge">001010</idno><idno type="wicri:Area/Ncbi/Curation">001010</idno><idno type="wicri:Area/Ncbi/Checkpoint">001010</idno><idno type="wicri:Area/Main/Merge">000972</idno><idno type="wicri:Area/Main/Curation">000970</idno><idno type="wicri:Area/Main/Exploration">000970</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Chewing through the Miocene: an examination of the feeding musculature in the ground sloth
<italic>Hapalops</italic> from South America (Mammalia: Pilosa)</title><author><name sortKey="Naples, Virginia L" sort="Naples, Virginia L" uniqKey="Naples V" first="Virginia L." last="Naples">Virginia L. Naples</name><affiliation wicri:level="1"><nlm:aff id="a1">Department of Biological Sciences, Northern Illinois University, Illinois, 60115, USA</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biological Sciences, Northern Illinois University, Illinois, 60115</wicri:regionArea><wicri:noRegion>60115</wicri:noRegion></affiliation></author><author><name sortKey="Mcafee, Robert K" sort="Mcafee, Robert K" uniqKey="Mcafee R" first="Robert K." last="Mcafee">Robert K. Mcafee</name><affiliation wicri:level="1"><nlm:aff id="a2">Department of Biological & Allied Health Sciences, Ohio Northern University, Ada, Ohio, 45810, USA</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biological & Allied Health Sciences, Ohio Northern University, Ada, Ohio, 45810</wicri:regionArea><wicri:noRegion>45810</wicri:noRegion></affiliation></author></analytic><series><title level="j">F1000Research</title><idno type="eISSN">2046-1402</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p><italic>Hapalops</italic>, a smaller-sized and early sloth of the Megatheroidea, appeared in the middle Miocene Santa Cruz formation of Argentina. This genus is part of the group from which later, larger megatheroids arose, i.e.,
<italic>Nothrotheriops</italic> and
<italic>Megatherium</italic>. Many cranial characters support this idea; however
<italic>Hapalops</italic> is not merely a smaller antecedent of the later forms. Specifically,
<italic>Hapalops</italic> retains short anterior caniniform teeth, and a temporomandibular joint elevated above the cheek tooth row; a combination distinct among sloths. An elevated temporomandibular joint occurs in
<italic>Bradypus</italic>, a tree sloth with anterior chisel-shaped teeth instead of caniniforms, and the tree sloth
<italic>Choloepus, </italic>which is aligned with the megalonychids, has anterior caniniforms.
<italic>Hapalops</italic> has an elongated zygomatic ascending process that is reminiscent of that in
<italic>Bradypus; </italic>however, the
<italic>Bradypus</italic> skull is extremely foreshortened while that of
<italic>Hapalops</italic> is elongated, as in nothrotheres, but not deepened as in megatheres. Previous work identified many sloth cranial character complexes, and functional limitations on skull feature combinations. The unique
<italic>Hapalops</italic> character patterns indicate a selective feeder with a mediolaterally oriented grinding stroke during mastication.</p></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Anderson, Wd" uniqKey="Anderson W">WD Anderson</name></author><author><name sortKey="Anderson, Bg" uniqKey="Anderson B">BG Anderson</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Anderson, Rp" uniqKey="Anderson R">RP Anderson</name></author><author><name sortKey="Handley, Co" uniqKey="Handley C">CO Handley</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Anthony, He" uniqKey="Anthony H">HE Anthony</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Badoux, Dm" uniqKey="Badoux D">DM Badoux</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Bargo, Ms" uniqKey="Bargo M">MS Bargo</name></author><author><name 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Warwick</name></author><author><name sortKey="Dyson, M" uniqKey="Dyson M">M Dyson</name></author></analytic></biblStruct></listBibl></div1></back></TEI><affiliations><list><country><li>États-Unis</li></country></list><tree><country name="États-Unis"><noRegion><name sortKey="Naples, Virginia L" sort="Naples, Virginia L" uniqKey="Naples V" first="Virginia L." last="Naples">Virginia L. Naples</name></noRegion><name sortKey="Mcafee, Robert K" sort="Mcafee, Robert K" uniqKey="Mcafee R" first="Robert K." last="Mcafee">Robert K. Mcafee</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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