Results 91 to 100 of about 785,671 (327)

Who was the real sabertooth predator: Thylacosmilus or Thylacoleo?

open access: yesThe Anatomical Record, EarlyView.
Abstract Sabertoothed mammalian predators, all now extinct, were almost exclusively feloid carnivorans (Eutheria, Placentalia): here a couple of extinct metatherian predators are considered in comparison with the placental sabertooths. Thylacosmilus (the “marsupial sabertooth”) and Thylacoleo (the “marsupial lion”) were both relatively large (puma ...
Christine M. Janis
wiley   +1 more source

Carnivora from the Sespe of the Las Posas Hills, California [PDF]

open access: yes, 1933
The generic assemblage of carnivores known at present from the Kew Quarry of the Las Posas Hills, Ventura County, California, is perhaps most noteworthy because of its resemblance to that recorded from the John Day.
Stock, Chester
core  

The Loss of First Permanent Molar in Young Patients

open access: yesČeská Stomatologie a Praktické Zubní Lékařství, 2013
Introduction: The loss of first permanent molar significantly reduces the biological quality of the dentition. In addition to prosthetic rehabilitation in indicated cases, we can also take advantage of orthodontic space closure with mesial shift of the ...
M. Koťová, J. Hovorka
doaj   +1 more source

Early synapsids neurosensory diversity revealed by CT and synchrotron scanning

open access: yesThe Anatomical Record, EarlyView.
Abstract Non‐mammaliaform synapsids (NMS) represent the closest relatives of today's mammals among the early amniotes. Exploring their brain and nervous system is key to understanding how mammals evolved. Here, using CT and Synchrotron scanning, we document for the first time three extreme cases of neurosensory and behavioral adaptations that probe ...
J. Benoit   +6 more
wiley   +1 more source

Orthodontic treatment need and prevalence of malocclusions in the Orthodontic Unit of "Sapienza - University of Rome" : a six - year clinical experience [PDF]

open access: yes, 2019
AIM The objective of this epidemiological survey was to investigate the dental-skeletal features of subjects attending the Public Dental Service in U.O.C. (Orthodontic Department of “La Sapienza University of Rome) and compare them with the existing body
Giordano, Alessandra
core  

Evaluation of the esthetic properties of developmental defects of enamel: a spectrophotometric clinical study [PDF]

open access: yes, 2015
Objectives. Detailed clinical quantification of optical properties of developmental defect of enamel is possible with spectropho- tometric evaluation. Developmental defects of enamel (DDE) are daily encountered in clinical practice. DDE are an alteration
Corridore, Denise   +5 more
core   +4 more sources

A CASE OF LOWER ANTERIOR PRIMARY TEETH FUSION

open access: yesJournal of Dentistry Indonesia, 2006
Dental fusion is the most common problem seen in the primary dentition. The incidence of dental fusion was approximately 0.5% for deciduous dentition and 0.1% for permanent dentition. Fusion may be complete or incomplete.
Noni Nurseni   +2 more
doaj   +1 more source

Bending performance changes during prolonged canine eruption in saber‐toothed carnivores: A case study of Smilodon fatalis

open access: yesThe Anatomical Record, EarlyView.
Abstract The canine of saber‐toothed predators represents one of the most specialized dental structures known. Hypotheses about the function of hypertrophied canines range from display and conspecific interaction, soft food processing, to active prey acquisition.
Z. Jack Tseng
wiley   +1 more source

Management of inflammatory dentigerous cysts in children : report of two cases [PDF]

open access: yes, 2010
Inflammatory dentigerous cysts are usually associated with a carious or non-vital primary tooth. Consequently they are found in children with a mixed dentition.
Azzopardi, Alexander, Scerri, Erica
core  

Evidence of strong stabilizing effects on the evolution of boreoeutherian (Mammalia) dental proportions. [PDF]

open access: yes, 2019
The dentition is an extremely important organ in mammals with variation in timing and sequence of eruption, crown morphology, and tooth size enabling a range of behavioral, dietary, and functional adaptations across the class.
Archibald J. D.   +26 more
core   +5 more sources

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