A new study in Genome Biology and Evolution reveals that egg yolk proteins may have been co-opted to provide maternal nutrition in live-bearing sharks and their relatives. While giving birth to live ...

Urea—the main component of human urine—plays an important role in the timing of maturation of sharks, rays and other cartilaginous fish. A new study by researchers with the Sea Around Us initiative at ...

A research team led by Profs. ZHU Min, LU Jing, and ZHU You'an from the Institute of Vertebrate Paleontology and Paleoanthropology (IVPP) of the Chinese Academy of Sciences published two back-to-back ...

The Late Cretaceous epoch witnessed an exceptional radiation of marine fishes, encompassing both cartilaginous and bony lineages that laid the foundation for much of today’s oceanic vertebrate ...

While giving birth to live young is a trait that most people associate with mammals, this reproductive mode—also known as viviparity—has evolved over 150 separate times among vertebrates, including ...