Langhian first appearances

Porpoises () are small dolphin-like cetaceans classified under the family Phocoenidae. Although similar in appearance to dolphins, they are more closely related to narwhals and belugas. There are eight extant species of porpoise, all among the smallest of the toothed whales. Porpoises are distinguished from dolphins by their flattened, spade-shaped teeth distinct from the conical teeth of dolphins, and lack of a pronounced beak, although some dolphins (e.g. Hector's dolphin) also lack a pronounced beak. Porpoises, and other cetaceans, belong to the clade Cetartiodactyla with even-toed ungulate

Hippopotamidae is a family of stout, naked-skinned, and semiaquatic artiodactyl mammals, possessing three-chambered stomachs and walking on four toes on each foot. While they resemble pigs physiologically, their closest living relatives are the cetaceans. They are formally referred to as hippopotamids.

Mergus is the genus containing the typical mergansers ( ), fish-eating ducks in the subfamily Anatinae.

The seriemas are the sole living members of the small bird family Cariamidae (the entire family is also referred to as "seriemas"), which is also the only surviving lineage of the order Cariamiformes. Once believed to be related to cranes, they have been placed near the falcons, parrots, and passerines, as well as the extinct Phorusrhacidae (terror birds). The seriemas are large, long-legged territorial birds that range from in length. They live in grasslands, savanna, dry woodland and open forests of Brazil, Bolivia, Argentina, Paraguay and Uruguay. There are two species of seriemas, the red-

species of reptile

genus of reptiles

genus of the squirrels

The Langhian is, in the ICS geologic timescale, an age or stage in the middle Miocene Epoch/Series. It spans the time between 15.98 Ma and 13.82 (million years ago) during the Middle Miocene.

Malacanthus is a small genus of tilefishes, family Malacanthidae. They are native to the western Atlantic Ocean and the Indian and Pacific Oceans. thumb|Malacanthus brevirostris, head

Lopholatilus is a small genus of large-sized tilefishes native to the western Atlantic Ocean.

Chrysemys is a genus of turtles in the family Emydidae. They are found throughout most of North America. The species in the genus include the painted and the southern painted turtles. ==Reproduction== Chrysemys have temperature dependent sex determination. During egg incubation, lower temperatures produce males while higher temperatures produce females.

Plithocyon is an extinct genus of hemicyonine bear of the Miocene epoch, endemic to North America and Europe. It lived from ~15.97—11.61 Ma, existing for approximately .