Results 41 to 50 of about 7,687 (133)

Diet of bird‐like troodontid dinosaurs: synthesis of a contentious clade

Biological Reviews, EarlyView.
ABSTRACT Troodontidae is a clade of small‐to medium‐sized maniraptoran theropods that mainly lived in Laurasia (modern Asia, North America and Europe) during the Jurassic and Cretaceous periods and are believed to have had a variety of diets. The uniqueness of troodontid teeth suggests that they diverged from the typical flesh‐based diet of non‐avian ...
Yui Chi Fan, Case Vincent Miller, Michael Pittman   +2 more
wiley   +1 more source

Geographic distributions shape the functional traits in a large mammalian family

Ecology and Evolution, 2021
Traits of organisms are shaped by their living environments and also determined in part by their phylogenetic relationships. For example, phylogenetic relationships often affect the geographic distributions of animals and cause variation in their living ...
Yingjie Ma, Meng Wang, Fuwen Wei, Yonggang Nie   +3 more
doaj   +1 more source

Nuevo registro del oso andino (Tremarctos ornatus, Carnivora: Ursidae) para el departamento de Caldas, Colombia

Mammalogy Notes, 2023
En Colombia la fragmentación de ecosistemas naturales, las actividades agrícolas y ganaderas han generado perdida en el hábitat natural del oso andino (Tremarctos ornatus), por lo cual, sus registros no son frecuentes.  Aquí reportamos un nuevo registro
Daniela Aristizabal, Jorge A. Zúñiga-Baos   +1 more
doaj   +1 more source

Cenozoic Tectonics Ignite Mitochondrial Codon Innovations Propelling Canid Body Size Evolution and Transcontinental Radiations

Integrative Zoology, EarlyView.
We decode mitochondrial genomes across all extant canids, revealing lineage‐specific codon optimization driven by altitude, predation, and body size. A tripartite framework integrates geological events, metabolic constraints, and adaptive radiation to explain carnivore evolution.
Xiaoyang Wu, Xibao Wang, Yongquan Shang, Yao Chen, Haotian Cai, Tian Xia, Qinguo Wei, Weilai Sha, Honghai Zhang   +8 more
wiley   +1 more source

Histological analysis of incremental markings and crown growth characteristics in mandibular first molars of the red fox, Vulpes vulpes (Canidae, Mammalia)

Journal of Anatomy, EarlyView.
This paper histologically analyzed incremental markings in dental enamel of red fox and grey wolf. Our results demonstrate that previous studies have misidentified these markings, which led to miscalculation of dental growth parameters. Abstract The present study analyzed incremental markings in the enamel of eight mandibular first molars (M1) of red ...
Horst Kierdorf, Uwe Kierdorf
wiley   +1 more source

Comparative Analysis of Olfactory Receptor Repertoires Sheds Light on the Diet Adaptation of the Bamboo-Eating Giant Panda Based on the Chromosome-Level Genome

Animals, 2023
The giant panda (Ailuropoda melanoleuca) is the epitome of a flagship species for wildlife conservation and also an ideal model of adaptive evolution. As an obligate bamboo feeder, the giant panda relies on the olfaction for food recognition.
Chuang Zhou, Yi Liu, Guangqing Zhao, Zhengwei Liu, Qian Chen, Bisong Yue, Chao Du, Xiuyue Zhang   +7 more
doaj   +1 more source

Through the eyes of the Andean bear: Camera collar insights into the life of a threatened South American Ursid. [PDF]

Ecol Evol
Due to Andean bears' propensity for inhabiting challenging environments and terrain, their wild ecology remains poorly understood, especially when compared to other members of the Ursidae family.
Pillco Huarcaya R, Whitworth A, Mamani N, Thomas M, Condori E.   +4 more
europepmc   +2 more sources

Ecological and Social Dimensions of Human–Bear Coexistence in Nepal's Gaurishankar Conservation Area

Ecology and Evolution, Volume 16, Issue 6, June 2026.
We modelled habitat suitability for Asiatic black bears in Nepal's Gaurishankar Conservation Area and combined it with community surveys to understand human–bear coexistence. Our results show that bear habitat is concentrated between 1000 and 3000 m and that conflict is rising in forest‐edge communities.
Shreyashi Bista, Nani Raut, Suman Shree Neupane, Morten Odden, Madhu Chetri   +4 more
wiley   +1 more source

Expanding the Faunal Interpretation of the Cova Eirós (NW Iberia) Middle Paleolithic–Early Upper Paleolithic Record With ZooMS

International Journal of Osteoarchaeology, Volume 36, Issue 3, Page 576-588, May/June 2026.
ABSTRACT The Cova Eirós archaeopaleontological site preserves the most comprehensive archaeostratigraphic sequence in the northwestern Iberian Peninsula, with an exceptionally rich record spanning from the Mousterian to the Upper Paleolithic. The extensive fragmentation of the faunal record and the rich taxonomic diversity at this site have limited the
Hugo Bal‐García, Samantha Brown, Iván Rey‐Rodríguez, Mikel Díaz‐Rodríguez, Carlos Fernández‐Rodríguez, Álvaro Ibáñez‐Encinas, Arturo de Lombera‐Hermida, Tania Mosquera‐Castro, Xosé Pedro Rodríguez‐Álvarez, Ramón Fábregas‐Valcarce   +9 more
wiley   +1 more source

Body size evolution through shifting climatic conditions in Mesozoic dinosaurs

Palaeontology, Volume 69, Issue 3, 2026.
Abstract Body size evolution is commonly associated with climate change. For example, birds and mammals have been found to decrease in size with anthropogenic global warming. Recent studies have inferred distinct shifts in climatic niche preferences among the three major dinosaur clades.
Lauren N. Wilson, Jacob D. Gardner, John P. Wilson, Alex Farnsworth, Paul Valdes, Zackary R. Perry, Patrick S. Druckenmiller, Gregory M. Erickson, Chris L. Organ   +8 more
wiley   +1 more source