Archaeologists often wish to distinguish between groups of cultural artifacts using
information collected from descriptions or measurements of their morphological forms …

Fundamental knowledge gaps exist about the plasticity of cells from adult soma and the
potential diversity of body shape and behavior in living constructs derived from genetically …

Abstract The Amazon and neighboring South American river basins harbor the world's most
diverse assemblages of freshwater fishes. One of the most prominent South American fish …

Simple Summary Angel sharks (genus Squatina) are small-to medium-sized sharks with
flattened bodies, that live on the seafloor. Until now, 23 valid species of angel sharks have …

Teeth in sharks are shed and replaced throughout their lifetime. Morphological dental
changes through ontogeny have been identified in several species and have been …

A rich insect fauna is found in the Cretaceous (Aptian) Nova Olinda Member of the Crato
Formation in the Araripe Basin, northeastern Brazil. The Crato Formation was deposited …

Upper Cretaceous coastal marine deposits are widespread in the Southern Urals with a
number of marine vertebrates previously reported from this region. However, previous …

Astragalus nurhakdagensis, a new species from the south of Turkey was described,
illustrated, and compared to the closest taxa Astragalus hirsutus, A. dumanii and A …

The first articulated dentition of† Ptychodus from Africa is described herein. The specimen,
likely coming from the Turonian of the Asfla area (Goulmima region, southeastern Morocco) …

Simple Summary The morphological characteristics of the soldier caste in termites provide
valuable taxonomic information at the species level. Head-shape variation in soldiers was …