Results 61 to 70 of about 2,451 (254)

Fig 4 -

, 2023
Functional group richness (number of functional groups) across Mexico, for (A) birds in the non-migratory season, (B) birds in the migratory season and (C) mammals.
Fernando Mayani-Parás (3326421), Griselda Escalona-Segura (9909837), Víctor Sánchez-Cordero (254589), Francisco Botello (17350663), Mariana Munguía-Carrara (17350666), Claudia E. Moreno (17350660)   +5 more
core   +1 more source

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

Comparative cranial biomechanics reveal macroevolutionary trends in theropod dinosaurs, with emphasis on Tyrannosauroidea

The Anatomical Record, EarlyView.
Abstract Tyrannosaurus is viewed as a model organism in vertebrate paleontology, with numerous studies analyzing its feeding biomechanics. Nonetheless, the evolution of this feeding performance has been under‐addressed in Tyrannosauroidea, especially in basal tyrannosauroids. Here we used muscle‐force reconstruction and finite element analysis (FEA) to
Evan Johnson‐Ransom, Paul Gignac, Daniel E. Barta, Ryan N. Felice, Eric Snively   +4 more
wiley   +1 more source

Widespread distribution of large silesaurids evidenced by a new record from the Middle Triassic of southwest Gondwana

The Anatomical Record, EarlyView.
The largest silesaurid known from South America is described here, demonstrating that silesaurids reached large body sizes in southwestern Gondwana. This discovery further underscores the widespread geographic distribution and temporal persistence of large silesaurids across Pangea, despite faunal turnovers and environmental events such as the Carnian ...
Rodrigo Temp Müller
wiley   +1 more source

Description of large, well‐preserved Enchodus specimens from the Bearpaw Formation of Alberta, Canada

The Anatomical Record, EarlyView.
Abstract Fishes of the genus Enchodus were abundant and cosmopolitan in the Late Cretaceous, but are primarily known from isolated remains in Canada. Four well‐preserved fish skulls were recovered in recent years from ammolite mines sampling the Bearpaw Formation of Southern Alberta, and are here referred to Enchodus petrosus Cope, 1874.
Luke E. Nelson, Alison M. Murray, Donald B. Brinkman   +2 more
wiley   +1 more source

Genomic diversity and structure of a Neotropical microendemic fig tree

Ecology and Evolution
Genetic diversity is a key component of evolution, and unraveling factors that promote genetic differentiation in space and time is a central question in evolutionary biology.
Ángela P. Rojas‐Cortés, Jaime Gasca‐Pineda, Antonio González‐Rodríguez, Guillermo Ibarra‐Manríquez   +3 more
doaj   +1 more source

Male reproductive system in stenopodidean shrimps: Unveiling basal reproductive traits in shrimp‐like Pleocyemata (Stenopodidae and Spongicolidae)

The Anatomical Record, EarlyView.
Abstract Stenopodidea represents one of the basal lineages within Pleocyemata, yet the male reproductive system (MRS) of this group remains poorly understood, with limited information available regarding its morphology and function. This study provides the first detailed description of the MRS in four stenopodidean shrimp species from two families ...
Caio Santos Nogueira, Lucas Rezende Penido Paschoal, Fernando José Zara   +2 more
wiley   +1 more source

A new Diaforobiotus species (Tardigrada: eutardigrada: richtersiusidae) from the Mexican transition zone, described based on multiple lines of evidence

The European Zoological Journal
The genus Diaforobiotus was established to accommodate species formerly assigned to the genus Macrobiotus (family Macrobiotidae), and is now placed within the family Richtersiusidae.
R. A. Flores-Romero, D. López-Sandoval, J. Vincenzi, M. Cesari, R. Guidetti, A. Dueñas-Cedillo, E. A. Ruiz, F. Armendariz-Toledano   +7 more
doaj   +1 more source

Phylogeography and population genetics of pine butterflies: Sky islands increase genetic divergence

Ecology and Evolution, 2019
The sky islands of southeastern Arizona (AZ) mark a major transition zone between tropical and temperate biota and are considered a neglected biodiversity hotspot.
Dale A. Halbritter, Caroline G. Storer, Akito Y. Kawahara, Jaret C. Daniels   +3 more
doaj   +1 more source

Prospecting of Architectural Features Using LiDAR‐UAV Technology, Deep Neural Networks and Visualization Techniques: A Case Study in Kuélap and Cambolín (NW Peru)

Archaeological Prospection, EarlyView.
ABSTRACT High‐resolution and accurate synoptic images of terrestrial topography, even in densely forested areas, have proven valuable for archaeology by enabling the identification and characterization of relief patterns associated with ancient human activities. This study presents a novel approach that integrates digital terrain models (DTMs) obtained
Jhon A. Zabaleta‐Santisteban, Rolando Salas López, Angel J. Medina‐Medina, Katerin M. Tuesta‐Trauco, Abner S. Rivera‐Fernandez, Nerci M. Noriega‐Salazar, José A. Sánchez‐Vega, Teodoro B. Silva‐Melendez, Marlen A. Grandez‐Alberca, Jhonsy O. Silva‐López, Nilton B. Rojas‐Briceño, Manuel Oliva‐Cruz, Alexander Cotrina‐Sanchez, Elgar Barboza   +13 more
wiley   +1 more source