Results 61 to 70 of about 1,074,895 (298)

The morphology of the oval window in Paranthropus robustus compared to humans and other modern primates

The Anatomical Record, EarlyView.
Abstract The oval window (OW) is an opening connecting the inner and middle ear. Its area has been shown to consistently scale with body mass (BM) in primates, and has been used alongside semi‐circular canal (SCC) size to differentiate Homo sapiens and fossil hominins, including Paranthropus robustus.
Ruy Fernandez, José Braga
wiley   +1 more source

What the skull and scapular morphology of the dugong (Dugong dugon) can tell us: sex, habitat and body length?

Scientific Reports, 2017
The dugong (Dugong dugon, Müller) is an endangered marine mammal species. We examined the relationship between sex, habitat and body length based on the skull and scapular morphology and morphometrics of 81 dugong samples in Thailand.
Korakot Nganvongpanit, Kittisak Buddhachat, Patcharaporn Kaewmong, Phaothep Cherdsukjai, Kongkiat Kittiwatanawong   +4 more
doaj   +1 more source

Ontogenetic skull variation in an Amazonian population of lowland tapir, Tapirus terrestris (Mammalia: Perissodactyla) in the department of Loreto, Peru

Acta Amazonica, 2021
The skulls of 54 specimens of the South American tapir, Tapirus terrestris collected in the department of Loreto, Peru were measured, analyzed and compared to investigate skull development of this species. Univariate, multivariate and allometric analyses
Rommel R. ROJAS, Walter Vasquez MORA, Ethersi Pezo LOZANO, Emérita R. Tirado HERRERA, Eckhard W. HEYMANN, Richard BODMER   +5 more
doaj   +1 more source

The relationship between form and function of the carnivore mandible

The Anatomical Record, EarlyView.
Abstract Dietary morphology diversified extensively in Carnivoraformes (living Carnivora and their stem relatives) during the Cenozoic (the last 66 million years) as they evolved to capture, handle, and process new animal and plant diets. We used 3D geometric morphometrics, mechanical advantage, and finite element analysis to test the evolutionary ...
Charles J. Salcido, P. David Polly
wiley   +1 more source

Chrysomya megacephala (Fabricius, 1794) (Diptera: Calliphoridae) development by landmark-based geometric morphometrics of cephalopharyngeal skeleton: a preliminary assessment for forensic entomology application

Egyptian Journal of Forensic Sciences, 2019
Background Considering the practicality of geometric morphometrics which could discriminate insect species, this application was extended to the analysis of blow fly larval growth based on cephalopharyngeal skeleton.
Li-Xuan Sim, Raja M. Zuha
doaj   +1 more source

Integrating species distribution models, genetics and morphology to infer species dynamics of New Zealand Phaulacridium grasshoppers : a thesis presented in partial fulfilment of the requirements for the degree of Masters of Science in Zoology at Massey University, Palmerston North, New Zealand [PDF]

, 2016
Species comparison studies have used a number of different methods that can contribute to our understanding of processes that influence the differences and similarities observed between species.
Sivyer, Louisa Maree
core  

Unexpectedly rapid evolution of mandibular shape in hominins [PDF]

, 2018
Members of the hominins – namely the so-called ‘australopiths’ and the species of the genus Homo – are known to possess short and deep mandibles and relatively small incisors and canines.
AT Chamberlain, B Wood, C Meloro, CA Lockwood, CP Klingenberg, DC Adams, DC Adams, DS Strait, DW Bapst, FJ Rohlf, G Marroig, G Suwa, H Morlon, HH Stedman, HM McHenry, J Clavel, JA Lee-Thorp, JD Pampush, JD Pampush, KD Zink, KD Zink, L Attwell, LJ Revell, LK Delezene, LO Greenfield, M Sponheimer, MM Skinner, R Wrangham, RA Foley, RL Susman, RS Corruccini, S Stelzer, SP McPherron, TD White, TE Cerling, WL Hylander, Y Haile-Selassie, Y Rak   +37 more
core   +2 more sources

Ontogenetic changes and sexual dimorphism in the cranium and mandible of the Atlantic walrus (Odobenus rosmarus rosmarus L.)

The Anatomical Record, EarlyView.
Abstract Walruses have been an important subsistence and cultural resource for humans and have been exploited for millennia across their distribution. This exploitation has contributed to severe declines in several populations and local extirpations.
Katrien Dierickx, Oliver Kersten, Youri van den Hurk, Brenna A. Frasier, Richard Sabin, Bastiaan Star, James H. Barrett   +6 more
wiley   +1 more source

A new species of Microglanis(Siluriformes: Pseudopimelodidae) from the upper rio Tocantins basin, Goiás State, Central Brazil

Neotropical Ichthyology
A new species of Microglanis is described from the upper rio Tocantins basin, Barro Alto, Goiás State, Brazil. This species is distinguished from the others by presenting a unique color pattern, consisting of round spots in the flank between the larger ...
Oscar Akio Shibatta
doaj   +1 more source

Quantifying the Geometric Shell Shape between Populations of True Limpets Lottia Mesoleuca (Mollusca: Lottidae) in Colombia

Animals, 2020
The increasing activity in morphological studies has provided new tools to analyses the shape quantitatively, these quantitative measurements allow the researcher to examine the variation in shape and perform analysis to examine the quantitative ...
Ana María Echeverry, Edgardo Londoño-Cruz, Hugo A. Benítez   +2 more
doaj   +1 more source