Peioraidae

The Peioraidae are a family of short-necked macropredatory plesiosaurs that lived between 200 to 91 million years ago, going extinct at the minor extinction event at the end of the Qalmanian period. Descended from long-necked ancestors, they developed short necks with robust heads rather quickly, becoming the top marine predators of the middle Neomesolithic era. The most well-known peiorid species is Aequor infectorem, known from fossils found in Syltor.

Many massive peioraids are known to science, including the formally unnamed Dracian-aged 'Predator Omnibus' and the Qalmanian "Fornost Fossil" Megalonectes, which was previously assumed to have been a turtle. Both of these massive organisms reached lengths of 25 meters or more, making them two of the largest carnivorous animals to ever live.