All skeletal specimens of the North American dinosaur Tyrannosaurus and a number of trace
fossils have been attributed to the single species: T. rex. Although an unusual degree of …

Counts of the number of skeletal specimens of “adult” megaherbivores and large theropods
from the Morrison and Dinosaur Park formations—if not biased by taphonomic artifacts …

Among the footprints found in Imilchil (Central High Atlas, Morocco) are two large ichnites
that we characterize as “colossal” to distinguish them from the “giant” theropod footprints in …

Predation is a biological interaction that influences demographic patterns by modifying
community structure. In the current ecological crisis, there is a need to better understand the …

Ostriches and emus are among the largest extant birds and are frequently used as modern
analogs for the growth dynamics of non‐avian theropod dinosaurs. These ratites quickly …

Developmental plasticity, where traits change state in response to environmental cues, is
well studied in modern populations. It is also suspected to play a role in macroevolutionary …

Mathematical models are a helpful tool that can help palaeoecology research advance in
similar ways as the ones already used in theoretical ecology. In this article, we use a …

The unusually shortened limbs of giant theropods, including abelisaurids,
carcharodontosaurids, and derived tyrannosauroids such as Tyrannosaurus rex have long …

Marshall et al. recently estimated population densities, range sizes, instant and cumulative
total population sizes for Tyrannosaurus rex with narrow ranges of uncertainly. I revisit the …

The eastern Anti-Atlas is renowned for its highly fossiliferous outcrops of Devonian rocks.
Ammonoids occur in rock-forming numbers at many localities in the Tafilalt and Maïder. This …