One of the properties of fossils is to provide unique ontogenies that have the potential to
inform us of developmental patterns and processes in the past. Although fossilized …

Here, we review and discuss the records and taxonomy of the Ypresian (Eocene)
chondrichthyans from the famous Bolca Konservat-Lagerstätte in northeastern Italy. Despite …

The Cretaceous-Paleogene event was the last mass extinction event, yet its impact and long-
term effects on species-level marine vertebrate diversity remain largely uncharacterized. We …

A new fish fauna is described from the middle Cenomanian of Namoura, Lebanon. Thirty
species are described of which 13 are new. Six new genera are erected to contain seven of …

The Subclass Elasmobranchii is widely considered nowadays to be the sister group of the
Subclass Holocephali, although chimaeroid fishes were originally classified as …

The Neoselachii are a monophyletic group including all of the extant sharks and rays. They
underwent rapid diversification throughout the Jurassic and Cretaceous, going from low …

Publisher Summary This chapter discusses the reproduction in cartilaginous fishes
(chondrichthyes). The cartilaginous fishes are phylogenetically the oldest of the jawed …

The dentitions of lamniform sharks are said to exhibit a unique heterodonty called the
“lamnoid tooth pattern.” The presence of an inflated hollow “dental bulla” on each jaw …

Living sharks, skates and rays share several derived skeletal characters that are absent in
most extinct elasmobranchs, suggesting a monophyletic group of 'higher'elasmobranchs …

Diverse sources and types of evidence indicate that common Cretaceous selachians of the
genus Squalicorax were the preeminent scavengers of vertebrate carcasses during …