| Auroraphoca Temporal range: | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Order: | Carnivora |
| Clade: | Pinnipedia |
| Family: | Phocidae |
| Subfamily: | Monachinae |
| Genus: | † Auroraphoca Dewaele, Peredo, Meyvisch, and Louwye, 2018 |
| Species | |
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Auroraphoca is an extinct genus of earless seals from the early Pliocene of what is now the U.S. Eastern Seaboard. [1]
Auroraphoca differs from other monachines by the abrupt distal termination of the deltopectoral crest, and the presence of a reduced and distally located epicondylar crest. It is most similar to Pliophoca in the development of the anconeal process on the ulna, and because of this, the holotype USNM 181419 and paratype USNM 250290 were referred to Pliophoca by Koretsky and Ray (2008). [1] [2]
The Pelagornithidae, commonly called pelagornithids, pseudodontorns, bony-toothed birds, false-toothed birds or pseudotooth birds, are a prehistoric family of large seabirds. Their fossil remains have been found all over the world in rocks dating between the Early Paleocene and the Pliocene-Pleistocene boundary.
Phocinae is a subfamily of Phocidae whose distribution is found in the seas surrounding the Holarctic, with the Baikal seal being the world's only freshwater species of pinniped. What distinguishes them from other phocid seals is the presence of well-developed claws on their front and back flippers. The Phocinae is divided into three extant tribes: Erignathini, Cystophorini, and Phocini. Members of both Erignathini and Cystophorini have 34 chromosomes, while species in the tribe Phocini have 32 chromosomes.
Ontocetus is an extinct genus of walrus, an aquatic carnivoran of the family Odobenidae, endemic to coastal regions of the southern North Sea and the southeastern coastal regions of the U.S. during the Miocene-Pleistocene. It lived from 13.6 mya—300,000 years ago, existing for approximately 13.3 million years.
Leptophoca is an extinct genus of earless seals from the North Atlantic realm.
Pterodromoides is an extinct genus of fulmarine petrel dating from the Late Miocene. It contains a single species, P. minoricensis. Its fossil remains were first discovered at the Punta Nati palaeontological site on the island of Menorca in the Balearic archipelago of the western Mediterranean. An additional specimen from North Carolina, USA has also been referred to this species, suggesting it lived across the North Atlantic. It was described in 2001, with the authors justifying the creation of a new genus by the large orbitonasal opening and characters of the postcranial skeleton, despite the similarity of the cranial osteology to that of Pagodroma.
Herpetocetus is a genus of cetotheriid mysticete in the subfamily Herpetocetinae. Considerably smaller than modern baleen whales, Herpetocetus measured only 3 to 4 meters in length. Additionally, due to the structure of its jaw, it was unable to open its mouth as wide as modern baleen whales, making it incapable of lunge feeding.
Pliophoca is an extinct genus of seal in the family Phocidae.
Albicetus is a genus of stem-sperm whales that lived during the Miocene Epoch, around 15 million years ago, and was discovered in Santa Barbara, California in 1909. It was categorized for decades as belonging to a group of extinct walruses erroneously thought to be sperm whales. It was named Albicetus, meaning "white whale", is a reference to the leviathan in Herman Melville's classic 1851 novel Moby-Dick.
Nanophoca is an extinct genus of earless seals from the middle Miocene of Belgium.
Phocanella is an extinct genus of earless seals from the early Pliocene of Belgium and the US Eastern Seaboard.
Pontophoca is an extinct genus of earless seals from the middle-late Miocene of the eastern Paratethys basin and the North Sea.
Platyphoca is an extinct genus of earless seals from Neogene marine deposits in the North Sea basin.
Gryphoca is an extinct genus of earless seals from Neogene marine deposits in the North Sea basin.
Praepusa is an extinct genus of earless seals from Neogene marine deposits in Europe. Five species, P. boeska,P. magyaricus, P. pannonica, P. tarchankutica and P. vindoboensis, are known.
Homiphoca is an extinct genus of earless seals from the Pliocene of South Africa.
Afrophoca was thought to be an extinct genus of earless seal from Miocene-age marine deposits in Libya. However, it has been demonstrated by Pickford & Muizon, 2024, that the type and only known specimen is from a medium-sized anthracothere, Afromeryx zelteni Pickford, 1991.
Callophoca is an extinct genus of earless seals from the late Miocene to early Pliocene of Belgium and the US Eastern Seaboard.
Frisiphoca is an extinct genus of phocid belonging to the subfamily Phocinae. It is known from fossils found in the late Miocene of Belgium.
Aechmophorus elasson is an extinct species of grebe recovered from the Piacenzian age of the United States.
Podiceps howardae is a possible extinct species of grebe from the United States, possibly a larger and earlier form of the horned grebe.
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