Results 131 to 140 of about 23,922 (306)

MicroCT reinvestigation of the only articulated fossil anostomid fish reveals synonymy of Arhinolemur Ameghino, 1898 and Megaleporinus Ramirez et al., 2017

open access: yesThe Anatomical Record, EarlyView.
Abstract Arhinolemur scalabrinii† Ameghino, 1898 was originally described as a strepsirrhine primate (Mammalia) but has been recognized as an anostomid fish since 2012. It remains the only extinct anostomid species known from complete cranial material.
Karen M. Panzeri   +8 more
wiley   +1 more source

Ectopic impacted third molar in the mandibular condyle associated with a dentigerous cyst: A case report

open access: yesKouqiang hemian waike zazhi
Ectopic teeth are commonly found in the maxillary sinus and nasal cavity, while impacted third molars in the mandible are relatively rare. Cases of ectopic impaction of the third molar occurring in the condyle accompanied by dentigerous cysts are even ...
HU Yaqi, CUI Zekun, GUO Yanjun
doaj   +1 more source

Oldest well‐preserved euprimate petrosal, from the early Eocene of India (Vastan Lignite Mine, Gujarat)

open access: yesThe Anatomical Record, EarlyView.
Abstract An exquisitely preserved, isolated partial petrosal with associated fragmentary stapes is described from the Vastan Lignite Mine (Gujarat, India), dated to the early Eocene (~54.5 Ma). Several anatomical traits (e.g., large petrosal plate; posterolateral entry of the internal carotid artery to the tympanic cavity; bony tubes surrounding the ...
Mary T. Silcox   +8 more
wiley   +1 more source

Combined surgical and orthodontic treatment of impacted second lower premolar: Case report [PDF]

open access: yesStomatološki glasnik Srbije, 2017
Impacted tooth is a tooth that has failed to reach occlusal plane, with 2/3 of completed root growth. There are various reasons for teeth impaction, however, lack of space for its emergence is considered to be the main reason.
Simić Ivana   +3 more
doaj  

Root resorption and impacted tooth position [PDF]

open access: yesAmerican Journal of Orthodontics and Dentofacial Orthopedics, 2020
Mukesh, Kumar   +3 more
openaire   +2 more sources

Dentigerous Cyst associated with Impacted Supernumerary Maxillary Anterior Tooth

open access: yes, 1970
Dentigerous cyst (DC) is a common oral lesion formed by fluid accumulation between the fully formed tooth crown and the reduced enamel epithelium.
Nair, Preeti, Khare, Pooja
core  

Impacted tooth associated with dentigerous cyst and compound odontoma – case report

open access: yes, 2016
The dentigerous cyst is a benign cyst associated with the development of odontogenic epithelium that covers the crown of impacted teeth. These are prevalent in the first three decades of life, reaching more often Caucasian males. Odontomas are hamartomas
Letícia de Souza Moraes   +5 more
core   +1 more source

Exploring the cranial morphology and possible convergences of Triassic non‐crocodylomorph pseudosuchians (Archosauria: Pseudosuchia) with other sauropsids through linear morphometrics

open access: yesThe Anatomical Record, EarlyView.
Abstract Triassic pseudosuchians had highly diversified cranial morphologies. These archosaurs occupied diverse ecological roles, ranging from terrestrial predators and herbivores to semiaquatic ambush predators and possible waders. Here, we apply linear cranial morphometrics to assess possible convergences with other sauropsids from the clades ...
Rafael Terras   +3 more
wiley   +1 more source

Dental anomalies in Pleistocene African hippopotamuses from Olduvai Bed II

open access: yesThe Anatomical Record, EarlyView.
Abstract Hippopotamuses are key palaeoenvironmental indicators in African Pleistocene ecosystems due to their ecological dependence on permanent water bodies and their frequent representation in the fossil record. This study examines dental anomalies in Hippopotamus cf. gorgops from several localities in Bed II of Olduvai Gorge (Tanzania), dated to ca.
Darío Fidalgo   +4 more
wiley   +1 more source

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

open access: yesThe Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson   +2 more
wiley   +1 more source

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