Dental Anomaly in Hapalodectes dux (Hapalodectidae, Mesonychia) from the Late Paleocene of Mongolia.

Authors :: Lopatin AV
Source :: Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections [Dokl Biol Sci] 2023 Oct; Vol. 512 (1), pp. 289-294. Date of Electronic Publication: 2023 Dec 12.
Publication Year :: 2023
Abstract: The holotype of Hapalodectes dux Lopatin, 2001 from the Upper Paleocene of Mongolia (Tsagan-Khushu locality, Naran Bulak Formation, Zhigden Member) is a lower jaw with complete dentition, showing healed alveoli in place of the right P <subscript>3</subscript> . Examination of the holotype using X-ray microtomography revealed a rare dental anomaly previously unknown in fossil mammals, namely the presence of the inverted (positioned upside down and rotated lingual side labially) impacted premolar inside the dentary. The cause of this anomaly may be an aberration of a tooth bud location or an injury.<br /> (© 2023. Pleiades Publishing, Ltd.)

Subjects :: Animals
Humans
Mongolia
Mandible
Mammals
Jaw
Tooth, Impacted etiology

Language :: English
ISSN :: 1608-3105
Volume :: 512
Issue :: 1
Database :: MEDLINE
Journal :: Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections
Publication Type :: Academic Journal
Accession number :: 38087015
Full Text :: https://doi.org/10.1134/S0012496623700667

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