Clupeiformes is the order of ray-finned fish that includes the herring family, Clupeidae, and the anchovy family, Engraulidae. The group includes many of the most important forage and food fish.
Cretoxyrhina is an extinct genus of large mackerel shark that lived about 107 to 73 million years ago during the late Albian to late Campanian of the Late Cretaceous. The type species, C. mantelli, is more commonly referred to as the Ginsu shark, first popularized in reference to the Ginsu knife, as its theoretical feeding mechanism is often compared with the "slicing and dicing" when one uses the knife. Cretoxyrhina is traditionally classified as the likely sole member of the family Cretoxyrhinidae but other taxonomic placements have been proposed, such as within the Alopiidae and Lamnidae.
Libonectes is an extinct genus of sauropterygian reptile belonging to the plesiosaur order. It is known from specimens found in the Britton Formation of Texas (USA) and the Akrabou Formation of Morocco, which have been dated to the lower Turonian stage of the late Cretaceous period.
Polycotylidae is a family of plesiosaurs from the Cretaceous, a sister group to Leptocleididae. Polycotylids first appeared during the Albian stage of the Early Cretaceous, before becoming abundant and widespread during the early Late Cretaceous. Several species survived into the final stage of the Cretaceous, the Maastrichtian.
Adriosaurus is an extinct genus of squamate which lived in what is now Slovenia and other parts of Europe during the Late Cretaceous. It was small, snake-like reptile, with type species measuring up to 30 cm (12 in) in length. This is the first fossil record of vestigial limbs in lizards. It lost its manus and forearm completely in order to elongate its axial skeleton. These unique anatomical features led to discussions of the evolutionary patterns of limb reduction in Squamata.
Ichthyodectiformes is an extinct order of marine stem-teleost ray-finned fish. The order is named after the genus Ichthyodectes, established by Edward Drinker Cope in 1870. Ichthyodectiforms are usually considered to be some of the closest relatives of the teleost crown group.
Terminonaris is a genus of extinct pholidosaurid crocodyliforms that lived during the Late Cretaceous epoch. The name means: “enlarged snout or nose” at the front of the skull. Terminonaris is an early crocodile, within a subgroup called Mesoeucrocodylia. Its remains have only been found in North America and Europe. Originally known under the generic name Teleorhinus, it was once believed to be a teleosaurid. Both prehistoric crocodiles such as Terminonaris, as well as modern crocodiles, belong to the same group called crocodyliformes, although modern crocodiles have specific features that indicate they are distant relatives of this species and members of the subgroup Eusuchia.
Aulolepis is an extinct genus of prehistoric marine ray-finned fish that lived during the upper Cenomanian and early Turonian. It contains a single species, A. typus from the Chalk Group of the United Kingdom.
Ctenocephalichthys is an extinct genus of prehistoric ray-finned fish that lived during the Santonian.
Alloberyx is an extinct genus of prehistoric marine ray-finned fish, possibly a holocentrid, that lived during the Santonian of Lebanon. It contains a single species, A. syriacus, initially described as a species of Pseudoberyx.
Africentrum is an extinct genus of prehistoric soldierfish that lived during the Upper Miocene subepoch of what is now Malta. It contains a single species, A. melitense. It has been either recovered as the sister genus to Myripristis or in a polytomy with all the other genera in the subfamily.
Berybolcensis is an extinct genus of prehistoric marine ray-finned fish that lived in the early Eocene. It contains a single species, B. leptacanthus, from the Monte Bolca lagerstatten of Italy. It was a member of the Holocentridae, making it related to modern squirrelfish and soldierfish, although it was more basal than either, and is thought to have diverged from their common ancestor around the Cretaceous-Paleogene boundary. It is thought to be related to Tenuicentrum, another basal holocentrid from the same formation.
Pleuropholis is an extinct genus of prehistoric ray-finned fish.
The Bissekty Formation is a geologic formation and Lagerstätte which crops out in the Kyzyl Kum desert of Uzbekistan, and dates to the Late Cretaceous Period. Laid down in the mid to late Turonian, it is dated to about 92 to 90 Ma.
The Budden Canyon Formation is the name of a sedimentary rock formation in California of Cretaceous (Berriasian-Turonian) age.
Megacephalosaurus is an extinct genus of short-necked pliosaur that inhabited the Western Interior Seaway of North America about 94 to 93 million years ago during the Turonian stage of the Late Cretaceous, containing the single species M. eulerti. It is named after its large head, which is the largest of any plesiosaur in the continent and measures up to 1.75 meters (5.7 ft) in length. Megacephalosaurus was one of the largest marine reptiles of its time with an estimated length of 6–9 meters (20–30 ft). Its long snout and consistently sized teeth suggest that it preferred a diet of smaller-sized prey.
Armigatus is an extinct genus of marine clupeomorph fishes belonging to the order Ellimmichthyiformes. These fishes lived in the Cretaceous ; their fossil remains have been found in Mexico, Croatia, the Middle East and North Africa, suggesting the genus ranged across the Tethys Sea.
Dolichosauridae is a family of Cretaceous aquatic lizards. They are widely considered to be the earliest and most primitive members of Mosasauria, though some researchers have recovered them as more closely related to snakes.
Ichthyotringidae is an extinct family of aulopiform fish known from the Early to Late Cretaceous. It is one of the Enchodontoidei, a diverse group of aulopiforms that were dominant marine fish during the Cretaceous.
