Results 81 to 90 of about 1,417,008 (306)

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

The Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

The effects of vessel speed and size on the lethality of strikes of large whales in U.S. waters

Frontiers in Marine Science
Vessel strikes are a substantial source of mortality for large whales worldwide and may pose conservation threats for small populations. Model-based estimates of mortality rates, which inform management strategies to reduce vessel strike mortality ...
Lance P. Garrison, Niki E. Lisi, Meghan Gahm, Eric M. Patterson, Hannah Blondin, Hannah Blondin, Caroline P. Good   +6 more
doaj   +1 more source

Novel Insights Into Gas Embolism in Sea Turtles: First Description in Three New Species

Frontiers in Marine Science, 2020
The recent finding of gas embolism (GE) and decompression sickness (DCS) in loggerhead sea turtles (Caretta caretta) in the Mediterranean Sea challenged the conventional understanding of marine vertebrate diving physiology.
Jose L. Crespo-Picazo, Mariluz Parga, Yara Bernaldo de Quirós, Danielle Monteiro, Vicente Marco-Cabedo, Cristina Llopis-Belenguer, Cristina Llopis-Belenguer, Daniel García-Párraga   +7 more
doaj   +1 more source

The coelurosaur theropods of the Romualdo formation, early Cretaceous (Aptian) of Brazil: Santanaraptor placidus meets Mirischia asymmetrica

The Anatomical Record, EarlyView.
Abstract The upper carbonate concretion levels of the Romualdo Formation (Aptian, Brazil) have yielded several theropod dinosaur remains, including spinosaurids and the coelurosaurs Santanaraptor placidus and Mirischia asymmetrica, the phylogenetic affinities of which are controversial.
Rafael Delcourt, Orlando Nelson Grillo, Christophe Hendrickx, Maximilian Kellermann, Max Cardoso Langer   +4 more
wiley   +1 more source

Sea turtles [PDF]

Current Biology, 2006
Lohmann, Catherine M.F., Lohmann, Kenneth J.   +1 more
openaire   +2 more sources

Assessing climate change associated sea‐level rise impacts on sea turtle nesting beaches using drones, photogrammetry and a novel GPS system

Global Change Biology, 2018
Climate change associated sea‐level rise (SLR) is expected to have profound impacts on coastal areas, affecting many species, including sea turtles which depend on these habitats for egg incubation.
M. Varela, A. R. Patrício, K. Anderson, A. Broderick, Leon DeBell, L. Hawkes, D. Tilley, R. Snape, M. Westoby, B. Godley   +9 more
semanticscholar   +1 more source

The cranial, mandibular, and hyoid anatomy of softshell turtles (Trionychidae): A revised character list for phylogenetic analysis

The Anatomical Record, EarlyView.
Abstract Softshell turtles (Pan‐Trionychidae) are an early branching clade of hidden‐necked turtles (Cryptodira) with a rich fossil record extending back to the Early Cretaceous. The evolutionary history of softshell turtles is still unresolved because of their conservative morphology combined with high levels of polymorphism related to morphological ...
Léa C. Girard, Walter G. Joyce
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

Interaction Between Age and Individual Heterogeneity Shapes Breeding Probability in a Long‐Lived Marine Ectotherm

Ecology and Evolution
In iteroparous species, reproductive skipping is generally considered an adaptive strategy. Non‐breeding individuals should have a greater annual survival probability and retain greater future reproductive potential.
C. George Glen, Jean‐Dominique Lebreton, Walter Mustin, Karen A. Bjorndal   +3 more
doaj   +1 more source

Kemp’s ridley Lepidochelys kempii nesting abundance in Texas, USA: a novel approach using genetics to improve population census

Endangered Species Research, 2014
Accurate estimates of the annual numbers of nesting females are critical for assessing sea turtle populations. Nesting by Kemp’s ridley Lepidochelys kempii turtles has significantly increased at Padre Island National Seashore and nearby beaches in Texas,
A Frey, PH Dutton, DJ Shaver, JS Walker, C Rubio   +4 more
doaj   +1 more source