Results 51 to 60 of about 8,625 (192)

Re‐evaluation of a soft crested Edmontosaurin, with implications for hadrosaurid life appearance and diversity

The Anatomical Record, EarlyView.
Abstract Hadrosaurid dinosaurs are generally regarded as “crested” or “non‐crested” depending on the presence or absence of a bony cranial crest. At least one supposedly “non‐crested” hadrosaur is known to have possessed a soft tissue cranial crest (or comb), based on an exceptionally preserved “mummified” specimen. Here we redescribe this specimen and
Henry S. Sharpe, Phil R. Bell, Ian Baylatry, Robin Sissons, Corwin Sullivan   +4 more
wiley   +1 more source

Endothermy, neuron counts, and other issues: Further remarks on neurocognitive evolution in fossil vertebrates

The Anatomical Record, EarlyView.
Abstract Last year, we challenged the view that large‐bodied theropod dinosaurs such as Tyrannosaurus rex resembled primates in cognition and behavior, a proposition made by Herculano‐Houzel in 2023. More recently, Jensen et al. have criticized our work on this topic, raising methodological and conceptual issues.
Kai R. Caspar, Cristián Gutiérrez‐Ibáñez, Hady George, Thomas R. Holtz Jr., Darren Naish, Grant R. Hurlburt   +5 more
wiley   +1 more source

Biological Roles Played by Sphingolipids in Dimorphic and Filamentous Fungi

mBio, 2018
Filamentous and dimorphic fungi cause invasive mycoses associated with high mortality rates. Among the fungal determinants involved in the establishment of infection, glycosphingolipids (GSLs) have gained increased interest in the last few decades.
Caroline Mota Fernandes, Gustavo H. Goldman, Maurizio Del Poeta   +2 more
doaj   +1 more source

Determining the timeline of gonadal and genital differentiation in male and female equine fetuses allows for early detection and intervention in malformations

The Anatomical Record, EarlyView.
Abstract Sexual differentiation in the equine fetus involves coordinated morphogenetic processes that shape both the gonads and the genital ducts. Although the formation of testes and ovaries has been relatively well documented, the temporal dynamics and morphometric patterns of the mesonephric (Wolffian) and paramesonephric (Müllerian) ducts remain ...
Tais Harumi de Castro Sasahara, Silvio Pires Gomes, Fabio Cesar Magioli Abdala, Bruno Cesar Schimming, Maria Angelica Miglino   +4 more
wiley   +1 more source

Cortical bone distribution in the human mandibular symphysis: Ontogenic and morphometric approaches in archeological context

The Anatomical Record, EarlyView.
Abstract The human mandibular symphysis concentrates multiaxial loads during function and remodels throughout growth, but the precise mechanisms underlying cortical bone shape during growth remain relatively unexplored. Approaches based solely on thickness or external cortical contours provide only partial insights and do not capture the functional ...
Ana Ribeiro, Elsa Garot, Christine Couture, Pierre‐Hadrien Decaup   +3 more
wiley   +1 more source

Pelvic morphology and body size in relation to the preauricular sulcus: Evidence from medieval to modern Iberia

The Anatomical Record, EarlyView.
Abstract The preauricular sulcus has long been debated as a pelvic feature variably attributed to obstetric stress, ligamentous traction, and broader biomechanical processes. To clarify its determinants, we analyzed 409 adult individuals from three archeological and one early modern skeletal collection from the Iberian Peninsula, integrating graded ...
Rebeca García‐González, Julia Muñoz‐Guarinos, Nico Cirotto, Sonia Díaz‐Navarro, Laura Rodríguez, José Miguel Carretero   +5 more
wiley   +1 more source

Developmental differences in cortical bone structure in chimpanzee and human femora reflect early locomotor independence in humans

The Anatomical Record, EarlyView.
Abstract The cortical bone structure of long bone diaphyses changes throughout growth via skeletal modeling and has important implications for bone strength and structural integrity. Ontogenetic trends in diaphyseal structure have been identified in both chimpanzees and humans but it is not yet clear how these trends compare given notable differences ...
Karen R. Swan, Rachel Ives, Zewdi J. Tsegai, Louise T. Humphrey   +3 more
wiley   +1 more source

Aethionema arabicum dimorphic seed trait resetting during transition to seedlings

Frontiers in Plant Science
The transition from germinating seeds to emerging seedlings is one of the most vulnerable plant life cycle stages. Heteromorphic diaspores (seed and fruit dispersal units) are an adaptive bet-hedging strategy to cope with spatiotemporally variable ...
Waheed Arshad, Tina Steinbrecher, Per K.I. Wilhelmsson, Noe Fernandez-Pozo, Noe Fernandez-Pozo, Marta Pérez, Zsuzsanna Mérai, Stefan A. Rensing, Stefan A. Rensing, Stefan A. Rensing, Jake O. Chandler, Gerhard Leubner-Metzger, Gerhard Leubner-Metzger   +12 more
doaj   +1 more source

Histological Characterization and Comparative Transcriptomic Analysis of Gonads During Early Sex Differentiation in the Northern Snakehead (Channa argus)

Animal Research and One Health, EarlyView.
This study delineates the early sex differentiation timeline in the northern snakehead (Channa argus). These findings provide a foundation for future sex‐control breeding in this economically important species. ABSTRACT The northern snakehead (Channa argus) is an economically important aquaculture species in China.
Chaonan Sun, Donglei Sun, Haishen Wen, Xin Qi, Chao Li, Xiaoyan Zhang, Yun Li   +6 more
wiley   +1 more source

Extensive Metabolic Remodeling Differentiates Non-pathogenic and Pathogenic Growth Forms of the Dimorphic Pathogen Talaromyces marneffei

Frontiers in Cellular and Infection Microbiology, 2017
Fungal infections are an increasing public health problem, particularly in immunocompromised individuals. While these pathogenic fungi show polyphyletic origins with closely related non-pathogenic species, many undergo morphological transitions to ...
Shivani Pasricha, James I. MacRae, Hwa H. Chua, Jenny Chambers, Kylie J. Boyce, Malcolm J. McConville, Alex Andrianopoulos   +6 more
doaj   +1 more source