Molluscs comprise the second largest phylum of animals (after arthropods), occurring in
virtually all habitats. Some are commercially important, a few are pests and some carry …

Heteromorphs are ammonoids forming a conch with detached whorls (open coiling) or non‐
planispiral coiling. Such aberrant forms appeared convergently four times within this extinct …

Fossil oral ejecta that exclusively contain bivalved calcitic lower jaws of ammonites (=
aptychi) from Late Jurassic Solnhofen-type deposits of southern Germany are described …

Scaphitid ammonoids were ubiquitous and significant components of the Western Interior
Seaway during the Late Cretaceous. This group is characterized by a recurved hook at …

Modern nautilids (Nautilus and Allonautilus) have often been studied by paleontologists to
better understand the anatomy and ecology of fossil relatives. Because direct observations …

Extant cephalopod soft tissues are commonly infested by various lineages of parasites
making it plausible that extinct cephalopods also had a variety of parasites. Direct evidence …

Measuring the metabolic rate of marine animals in their natural environment is challenging,
impeding our understanding of their physiological ecology. Recently, a novel metabolic …

Measurements of trace element chemistry, mineralogy, and isotope geochemistry are rarely
combined with known environmental data to provide a more complete story about how …

Ammonites are externally shelled cephalopods that were common in the North American
Western Interior Seaway (WIS), and as they grew their aragonitic shells via accretion, they …

Cold methane seeps were common in the Late Cretaceous Western Interior Seaway of
North America. They provided a habitat for a diverse array of fauna including ammonites …