Results 51 to 60 of about 7,955,044 (242)

Heterodonty in the teeth of the turiasaurian sauropod from Angeac-Charente (Early Cretaceous, southwestern France): Comparison of anatomical and geometric morphometric approaches. [PDF]

J Anat
Turiasaurian teeth from Angeac‐Charente exhibit five dental morphotypes and reveal clear heterodonty and anteroposterior size gradient. Qualitative comparative anatomy quickly and efficiently identifies morphotypes, while 3D geometric morphometrics combined with machine learning refine ambiguous cases, demonstrating that qualitative and quantitative ...
Gouellec CL, Allain R, Goedert J, Pintore R, Carter J, Royo-Torres R, Augier D, Cornette R.   +7 more
europepmc   +2 more sources

Origin, evolution and biogeographic dynamics of the European rabbit (Oryctolagus cuniculus) in Southwestern Europe

The Anatomical Record, EarlyView.
Abstract The Pleistocene is a key period for understanding the evolutionary history and palaeobiogeography of the European rabbit (Oryctolagus cuniculus). The species was first documented in southeastern Iberia at the beginning of the Middle Pleistocene and appears to have rapidly spread throughout Southwestern Europe, where it was found in numerous ...
Maxime Pelletier
wiley   +1 more source

New specimens of the multituberculate mammal Sphenopsalis from China: Implications for phylogeny and biology of taeniolabidoids [PDF]

Acta Palaeontologica Polonica, 2016
Multituberculates are the most diverse and best known group of Mesozoic mammals; they also persisted into the Paleogene and became extinct in the Eocene, possibly outcompeted by rodents that have similar morphological and presumably ecological ...
Fang-Yuan Mao, Yuan-Qing Wang, Jin Meng
doaj   +1 more source

New techniques for old bones: Morphometric and diffeomorphometric analysis of the bony labyrinth of the Reilingen and Ehringsdorf Neandertals

The Anatomical Record, EarlyView.
Abstract Neandertals are known to possess very distinctive traits in their bony labyrinth morphology, such as an inferiorly positioned posterior canal and a very low number of turns in the cochlea. Hence, the inner ear has been often used to assess the Neandertal status of fragmentary fossils.
Alessandro Urciuoli, Julia Diez‐Valero, Ignacio Martínez, Rolf Quam, Brian A. Keeling, Nicole M. Webb, Mercedes Conde‐Valverde   +6 more
wiley   +1 more source

Tarsal morphology of ischyromyid rodents from the middle Eocene of China gives an insight into the group’s diversity in Central Asia

Scientific Reports, 2021
Ischyromyids are a group of large rodents with the earliest fossil record known from the late Paleocene (Clarkforkian) of North America; they are considered the earliest fossil representatives of Rodentia of modern aspect.
Łucja Fostowicz-Frelik, Sergi López-Torres, Qian Li   +2 more
doaj   +1 more source

Previously undocumented regional variability in crab‐eating macaque skull sexual dimorphism and its implications for biological and morphometric studies

The Anatomical Record, EarlyView.
Abstract In a large sample of adult crab‐eating macaques, we quantified sexual dimorphism in size, shape, and covariance across the whole skull and among anatomical regions of the cranium and mandible. All regions showed significant mean sex differences, but the magnitude of size and shape dimorphism varied substantially.
Andrea Cardini, Paul O'Higgins
wiley   +1 more source

The petrotympanic canal (Huguier canal): Evolutionary, anatomical, and medical perspectives

The Anatomical Record, EarlyView.
Abstract The petrotympanic canal, traditionally referred to as Civinini's or Huguier's canal, represents an anatomical passage connecting the middle ear and temporomandibular joint (TMJ). Despite its early description, its structural complexity and functional significance have often been underestimated. In this study, we combined historical, anatomical,
Andrea Papini, Nicola Montemurro, Ferdinando Paternostro, Immacolata Belviso, Massimo Galli, Petra Martini, Licia Uccelli, Jacopo Moggi‐Cecchi, Gregorio Oxilia   +8 more
wiley   +1 more source

East Asian Gene flow bridged by northern coastal populations over past 6000 years

Nature Communications
Coastal areas of northern East Asia in the ShanDong region, which show complex cultural transitions in the last 10,000 years, have helped to facilitate population interactions between more inland regions of mainland East Asia and islands such as those in
Juncen Liu, Yichen Liu, Yongsheng Zhao, Chao Zhu, Tianyi Wang, Wen Zeng, Bo Sun, Fen Wang, Hui Han, Zhenguang Li, Xiaotian Feng, Peng Cao, Fengshi Luan, Feng Liu, Qingyan Dai, Junfeng Guo, Zimeng Wang, Chengmin Wei, Qiaowei Wei, Ruowei Yang, Weihong Hou, Wanjing Ping, Fan Bai, Bo Miao, Wenjun Wang, Melinda A. Yang, Qiaomei Fu   +26 more
doaj   +1 more source

Hippotherium Datum implies Miocene palaeoecological pattern

Scientific Reports, 2022
Here, we report well–preserved skulls and postcranial specimens of genus Hippotherium from the Linxia Basin, Gansu, China. Based on morphological comparison, the species of Hippotherium in China, Hippotherium weihoense and Hippotherium chiai, should be ...
Boyang Sun, Yan Liu, Shanqin Chen, Tao Deng   +3 more
doaj   +1 more source

Late Paleocene to early Oligocene fire ecology of the south Mongolian highland

Frontiers in Earth Science, 2023
Changes in fire ecology during warm and cold periods in the geological past are important because of their effects on terrestrial ecosystems and the global carbon cycle.
Xinying Zhou, Xinying Zhou, Jian Wang, Jian Wang, Qian Li, Bin Bai, Fangyuan Mao, Xiaoqiang Li, Xiaoqiang Li, Yuan-Qing Wang, Yuan-Qing Wang   +10 more
doaj   +1 more source