Boreosphenida
Boreosphenida (from boreas, "northern wind" and sphen, "wedge") were early mammals that originated in the Northern Hemisphere and had tribosphenic molars (three-cusped cheek teeth). In boreosphenidans, the mandibular angle is placed posteriorly and the primitive postdentary trough (hole in the mandible) is absent (in contrast to Kuehneotheriidae, Eupantotheria, and Australosphenida.) They share the tribosphenic molars with the Australosphenida but differ from them by having cingulid cuspules but lacking a continuous mesial cingulid. Boreosphenidans also lack the triangulated trigonid on the last premolar found in Early Cretaceous mammals. They differ from Shuotherium (a monotreme-relative) in having the talonid placed posterior to the trigonid (like in modern tribosphenic mammals) in the l
primaryTopic
Boreosphenida
Boreosphenida (from boreas, "northern wind" and sphen, "wedge") were early mammals that originated in the Northern Hemisphere and had tribosphenic molars (three-cusped cheek teeth). In boreosphenidans, the mandibular angle is placed posteriorly and the primitive postdentary trough (hole in the mandible) is absent (in contrast to Kuehneotheriidae, Eupantotheria, and Australosphenida.) They share the tribosphenic molars with the Australosphenida but differ from them by having cingulid cuspules but lacking a continuous mesial cingulid. Boreosphenidans also lack the triangulated trigonid on the last premolar found in Early Cretaceous mammals. They differ from Shuotherium (a monotreme-relative) in having the talonid placed posterior to the trigonid (like in modern tribosphenic mammals) in the l
has abstract
Boreosphenida (from boreas, "n ...... ing the end of the Cretaceous.
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BoreosphenidaFichier:Koala02.j ...... phénides au sein des thériens.
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Trybosfenidy (Tribosphenida) – ...... młodszy synonim Tribosphenida.
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الثدييات الشمالية (الاسم العلم ...... الحيوانات تتبع طائفة الثدييات.
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class
kingdom
phylum
Wikipage page ID
38,604,267
Wikipage revision ID
686,292,057
infraclassis
subject
hypernym
comment
Boreosphenida (from boreas, "n ...... tribosphenic mammals) in the l
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BoreosphenidaFichier:Koala02.j ...... phénides au sein des thériens.
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Trybosfenidy (Tribosphenida) – ...... podobnie na półkuli północnej.
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الثدييات الشمالية (الاسم العلم ...... الحيوانات تتبع طائفة الثدييات.
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label
Boreosphenida
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Boreosphenida
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Trybosfenidy
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ثدييات شمالية
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