Yorktown Formation
Geological Formation in the United States
From Wikipedia, the free encyclopedia
The Yorktown Formation is a mapped bedrock unit in the Coastal Plain of Maryland, Virginia, North Carolina and South Carolina. It is overconsolidated and highly fossiliferous.
Typesedimentary
Unit ofChesapeake Group
Sub-unitsSunken Meadow Member, Rushmere Member, Morgarts Beach Member, Moore House Member, Tunnels Mill Member
UnderliesCroatan Formation
| Yorktown Formation | |
|---|---|
| Stratigraphic range: Early to Middle Pliocene, | |
Outcrop of the Yorktown Formation at Carters Grove Bluffs along the James River | |
| Type | sedimentary |
| Unit of | Chesapeake Group |
| Sub-units | Sunken Meadow Member, Rushmere Member, Morgarts Beach Member, Moore House Member, Tunnels Mill Member |
| Underlies | Croatan Formation |
| Overlies | Eastover Formation, Pungo River Formation |
| Lithology | |
| Primary | Sandstone, claystone |
| Other | shells |
| Location | |
| Region | Atlantic Coastal Plain of North America |
| Extent | Maryland, Virginia, North Carolina, South Carolina |
| Type section | |
| Named for | Yorktown, Virginia |
| Named by | Clark and Miller, 1906[1] |
Description
The Yorktown is composed largely of overconsolidated sand and clay with abundant calcareous shells, primarily bivalves.
Stratigraphy
The Yorktown unconformably overlies the Miocene Eastover Formation, and conformably underlies the Pliocene Croatan Formation.[2]
The Yorktown was divided into members by Ward and Blackwelder (1980). These are in ascending order: Sunken Meadow Member, Rushmere Member, Morgarts Beach Member, and Moore House Member.[3] The uppermost Tunnels Mill Member is recognized in Maryland only.
Notable exposures
- Type Section: Yorktown, Virginia on southwest side of York River, York County
- Carters Grove Bluffs, north side of James River[4] 37°12′33″N 76°38′00″W
- Moore House Bluff, southwest side of York River, York County 37°13′25″N 76°29′14″W (very close to type section)
Aurora mine
The most diverse paleobiota of the Yorktown Formation has been recovered from the Aurora mine of Beaufort County, North Carolina, where it overlies the intensively-mined Pungo River Formation. As with the Pungo River Formation, this locality has become a prime target for fossil collecting, and some of the most notable fossils from both formations are displayed at the Aurora Fossil Museum.[5] Foraminiferal analyses suggests that this locality belongs the Early Pliocene-aged Sunken Meadow Member.[6] The Yorktown fauna at the Aurora mine is far more diverse than the Pungo River fauna from the same locality, as the Pungo River sediments are mechanically processed for their phosphorite, while the Yorktown sediments are discarded and are thus in better condition for study.[7] This locality was likely deposited in an bay, with older sediments being deposited at a depth of 80 to 100 metres (260 to 330 ft) underwater, while younger sediments were deposited at a depth of 30 metres (98 ft) underwater.[8]
Clear differences are seen in the paleoichthyofauna of the Pungo River Formation and the overlying Yorktown Formation at the Aurora mine, with the Pungo River fauna representing almost exclusively warm-water taxa, while the Yorktown fauna preserves both warm and cooler-water taxa. These fossils provide important evidence for the significant cooling of ocean temperatures between the Miocene and Pliocene. However, the invertebrate fauna from both time periods appears to have cool-temperate affinities.[9]
Age
Hazel (1971) revised the age of the Yorktown from Miocene to Late Miocene to Early Pliocene using ostracod biostratigraphy.[10] The age was revised by Gibson (1983) to extend into the Middle Pliocene based on foraminifera.[11] Further biostratigraphic work with ostracods and foraminifera was completed by Cronin (1991), which also summarized previous investigations.[12] More recently, Spivey (2025) dated the Sunken Meadow Member to the Zanclean stage, about 4.8 to 3.8 million years ago,[6] while Dowsett et al (2001) dated the Rushmere and Morgarts Beach Members to the early-mid Piacenzian stage, about 3.3 to 3.15 million years ago. The deposition of these latter two members is thought to be linked to a marine transgression caused by the mid-Piacenzian warm period.[13]
Fossils
- Bivalves, including Glycymeris subovata, Chesapecten jeffersonius, Chesapecten madisonius, Mercenaria tridacnoides, Panopera reflexa,[14] Chama, Ensis, Striarca and Noetia (see Noetiidae), Cerastoderma, Dosinia, Mulinia, Kuphus (Shipworm), Panope (Geoduck), and the oyster Ostrea
- Gastropods, including Crucibulum, Calliostoma, Busycon, Turritella, and Crepidula
- Foraminifera, including the biostratigraphic marker species Dentoglobigerina altispira (see Globigerinida), Sphaeroidinellopsis, and Globorotalia puncticulata[15]
- Scleractinian corals, including Septastrea marylandica, Paracyathus vaughani (see Caryophylliidae), and Astrangia lineata
- Ostracods
- Bryozoans
- Barnacles, including Balanus
- Worms
- Sponges
- Birds, including the large pelican Pelecanus schreiberi.
- Whales, including the prehistoric sperm whale Scaldicetus.
Vertebrate paleobiota
As per the Paleobiology Database:[16]
Cartilaginous fishes
Based on Purdy et al. (2001):[9]
Sharks
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Rays
| Genus | Species | Locality | Notes | Images |
|---|---|---|---|---|
| Aetobatus | A. sp. | An eagle ray. |  | |
| Bathytoshia (=Dasyatis) | B. centroura | The modern roughtail stingray. |  | |
| Mobula | M. sp. | A devil ray. |  | |
| Pristis | P. cf. pectinatus | A sawfish, potentially the modern smalltooth sawfish. |  | |
| Raja | R. sp. | A skate. | .jpeg) |
Ray-finned fishes
Based on Purdy et al. (2001):[9]
| Genus | Species | Locality | Notes | Images |
|---|---|---|---|---|
| Acanthocybium | A. solandri | The modern wahoo. |  | |
| Acipenser | A. cf. oxyrhynchus | A sturgeon, potentially the modern Atlantic sturgeon. |  | |
| ?Agonidae indet. | A potential poacher of uncertain affinities. | |||
| Alosa | A. cf. sapidissima | A shad, potentially the modern American shad. | .jpg) | |
| Aluterus | A. sp. | A filefish. | _-_Kawahara_Keiga_-_1823_-_1829_-_Siebold_Collection_-_pencil_drawing_-_water_colour_1.jpeg) | |
| Ammodytes | A. hexapterus | The modern Arctic sand lance. |  | |
| Anisotremus | A. sp. | A grunt. |  | |
| Archosargus | A. cf. probatocephalus | A porgy, potentially the modern sheepshead. |  | |
| Astroscopus | A. sp. | A stargazer. | .jpg) | |
| Auxis | A. sp. | A frigate tuna. | _(Ifremer_00763-87516).jpg) | |
| Bagre | B. sp. | A sea catfish. |  | |
| Brotula | B. barbata | The modern bearded brotula. |  | |
| Caulolatilus | C. cf. cyanops | A deepwater tilefish, potentially the modern blackline tilefish. |  | |
| Centropristis | C. cf. striata | A seabass, potentially the modern black sea bass. | .png) | |
| Ceratoscopelus | C. maderensis | The modern Madeira lanternfish. |  | |
| Chilomycterus | C. schoepfi | The modern striped burrfish. | _(12658644675).jpg) | |
| ?C. sp | A giant Diodontidae, known from two 71mm long tooth plates similar to Chilomycterus reticulatus. These plates suggest it may have reached over 1.5 m in length.[17] | |||
| Citharichthys | C. sp. | A sanddab. |  | |
| Conger | C. cf. oceanicus | A conger eel, potentially the modern American conger. | _(15424517437).jpg){kind=small} | |
| Congridae indet. | A conger eel of uncertain affinities. | |||
| Cynoscion | C. cf. nebulosus | A weakfish, potentially the modern spotted seatrout. |  | |
| Diplectrum | D. cf. formosum | A sand perch, potentially the modern sand perch. |  | |
| Epinephelus | E. sp. | A grouper. |  | |
| Equetus | E. cf. umbrosus | A drumfish, potentially the modern cubbyu. |  | |
| Gadus | G. cf. morhua | A cod, potentially the modern Atlantic cod. |  | |
| Istiophorus | I. platypterus | The modern sailfish. |  | |
| Kajikia | K. albida | The modern white marlin. | .png) | |
| Kathetostoma | K. sp. | A stargazer. |  | |
| Leiostomus | L. sp. | A relative of the spot. |  | |
| Lagodon | L. cf. rhomboides | A porgy, potentially the modern pinfish. |  | |
| Lopholatilus | L. chamaeleonticeps | The modern great northern tilefish. |  | |
| L. rayus | An extinct deepwater tilefish. | |||
| Lophius | L. cf. americanus | A monkfish, potentially the modern American anglerfish. |  | |
| Makaira | M. indica | The modern black marlin. |  | |
| M. nigricans | The modern Atlantic blue marlin. | .png) | ||
| M. purdyi[18] | An extinct marlin. | |||
| Melanogrammus | M. cf. aeglefinus | A cod, potentially the modern haddock. |  | |
| Merluccius | M. albidus | The modern offshore hake. |  | |
| M. cf. bilinearis | A hake, the modern silver hake. |  | ||
| M. sp. | A hake. | |||
| Merlangiogadus | M. congatus | An extinct gadid. | ||
| Micropogonias | M. sp. | A drumfish. | .jpg) | |
| Mola | M. chelonopsis | An extinct ocean sunfish. |  | |
| Mycteroperca | M. sp. | A grouper. |  | |
| Ophidion | O. grayi | The modern blotched cusk-eel. |  | |
| Opsanus | O. tau | The modern oyster toadfish. | _(12658771393).jpg) | |
| Pagrus | P. hyneus | An extinct relative of the modern common seabream. | _-_Kawahara_Keiga_-_1823_-_1829_-_Siebold_Collection_-_pencil_drawing_-_water_colour.jpeg) | |
| Paralichthys | P. sp. | A largetooth flounder. |  | |
| Pleuronectidae indet. | A righteye flounder of uncertain affinities. | |||
| Pogonias | P. cf. cromis | A drumfish, potentially the modern black drum. | _Matanzas,_Fla.jpeg) | |
| Pomatomus | P. saltatrix | The modern bluefish. |  | |
| Prionotus | P. cf. evolans | A searobin, potentially the modern striped searobin. |  | |
| Pterothrissus | P. sp. | A gissu. |  | |
| Sarda | S. aff. sarda | A bonito similar to the modern Atlantic bonito. |  | |
| Sciaenidae indet. | A drumfish of uncertain affinities. | |||
| Sciaenops | S. ocellatus | The modern red drum. |  | |
| Scombridae indet. | A mackerel of uncertain affinities. | |||
| Seriola | S. sp. | An amberjack. |  | |
| Serranidae indet. | A seabass of uncertain affinities. | |||
| Sphyraena | S. cf. barracuda | A barracuda, potentially the modern great barracuda. | _(Ifremer_00764-87612).jpg) | |
| Sphoeroides | S. hyperostosus | An extinct pufferfish. | .gif) | |
| Stenotomus | S. cf. chrysops | A porgy, potentially the modern scup. |  | |
| Symphurus | S. sp. | A tonguefish. |  | |
| Tautoga | T. cf. onitis | A wrasse, potentially the modern tautog. | .jpg) | |
| Thunnus | T. thynnus | The modern Atlantic bluefin tuna. |  | |
| T. sp. | A tuna. | |||
| Urophycis | U. tenuis | The modern white hake. |  | |
| Xiphias | X. gladius | The modern swordfish. |  |
Reptiles
Turtles
Based partly on Zug (2001):[7]
| Genus | Species | Locality | Notes | Images |
|---|---|---|---|---|
| Apalone | cf. A. sp. | A softshell turtle. | .jpg) | |
| Caretta | C. patriciae | An extinct relative of the loggerhead sea turtle. |  | |
| Chelonia | ?C. sp. | A potential relative of the green sea turtle. | .jpg) | |
| Chrysemys | C. sp. | A painted turtle. | _Madden_Haag.jpg) | |
| "Geochelone (Caudochelys)" | "G." sp. | An extinct tortoise. |  | |
| Lepidochelys | L. sp. | A Ridley sea turtle. |  | |
| Procolpochelys | P. sp. | A sea turtle. |  | |
| Psephophorus | P. sp. | A relative of the leatherback turtle. |  | |
| Syllomus | S. aegyptiacus | A sea turtle. |
Crocodilians
| Genus | Species | Locality | Notes | Images |
|---|---|---|---|---|
| Thecachampsa | T. antiqua[19] | Lee Creek Mine | A gavialoid crocodilian, one of the northernmost Pliocene records of the genus.[19] |  |
Birds
Based on Olson & Rasmussen (2001). An extremely high diversity of fossil birds, primarily known from isolated but diagnostic limb bones, is known from the formation. All specimens were collected from the Lee Creek Mine. Most taxonomic assignments were based on rough similarity to living species, hence the "aff." suffix to indicate similarities, and are not intended to be meant as direct taxonomic assignments.[20]
Anseriformes
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Galliformes
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Phoenicopteriformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Phoenicopterus | P. cf. floridanus | An extinct flamingo. |  |
Podicipediformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Podiceps | P. aff. auritus | A grebe similar to the horned grebe. |  |
Gruiformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Antigone | A. aff. antigone | A crane similar to the sarus crane. |  |
| Grus | G. aff. americana | A crane similar to the whooping crane. |  |
Columbiformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Ectopistes | E. aff. migratorius | A relative of the passenger pigeon. |  |
Accipitriformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Accipitridae indet. | A hawk of uncertain affinities. | ||
| Buteo | B. jamaicensis | A hawk similar to the red-tailed hawk. |  |
| ?B. sp. | A hawk. | ||
| Cathartidae indet. | A New World vulture of uncertain affinities. | ||
| Neophrontops | ?N. sp. | An Old World vulture. |  |
| Pandion | P. sp. | A relative of the osprey. |  |
Ciconiiformes
Suliformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Morus | M. avitus | An extinct gannet. |  |
| M. atlanticus | |||
| M. peninsularis | |||
| M. loxostyla | |||
| M. sp. | |||
| Phalacrocorax | P. wetmorei | An extinct cormorant. |  |
| P. sp. |
Pelecaniformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Ardea | A. aff. cinerea | A heron similar to the gray heron. |  |
| Eudocimus | E. sp. | An ibis. | _(8591615863).jpg) |
| Pelecanus | P. schreiberi | An extinct giant pelican, type locality of species. |  |
Procellariiformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Ardenna | A. sp. | A shearwater. | |
| A. tenuirostris | A shearwater similar to the short-tailed shearwater. | ||
| A. gravis | A shearwater similar to the great shearwater. | ||
| ?Bulweria sp. | A petrel. | ||
| Calonectris | C. aff. diomedea | A shearwater similar to Scopoli's shearwater. | |
| C. borealis | A shearwater similar to Cory's shearwater. | ||
| C. krantzi | An extinct shearwater. | ||
| Pachyptila | P. sp. | A prion. | |
| Phoebastria | P. aff. albatrus | An albatross similar to the short-tailed albatross. | |
| P. aff. immutabilis | An albatross similar to the Laysan albatross. | ||
| P. nigripes | An albatross similar to the black-footed albatross. | ||
| P. rexularum | An extinct albatross. | ||
| P. anglica | An extinct albatross. | ||
| Procellaria | P. cf. parkinsoni | A petrel similar to the black petrel. | |
| P. cf. aequinoctialis | A petrel similar to the white-chinned petrel. | ||
| Pterodroma | P. lessonii | A petrel similar to the white-headed petrel. | |
| Pterodromoides | P. minoricensis | An extinct petrel. | |
| Puffinus | P. cf. puffinus | A shearwater similar to the Manx shearwater. | |
| P. aff. pacificoides | A shearwater similar to the Saint Helena shearwater. | ||
| P. lherminieri | A shearwater similar to the Sargasso shearwater. | ||
| P. sp. | A shearwater. | ||
| P. (Thyellodroma) sp. |
Gaviiformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Gavia | G. concinna | An extinct loon. |  |
| G. fortis | |||
| G. howardae |
Odontopterygiformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Pelagornis | P. sp. 1. | A pseudotooth bird. |  |
| P. sp. 2 |
Charadriiformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Aethiinae indet. | An auk of uncertain affinities. | ||
| Alca | A. ausonia | An extinct auk related to the razorbill. Type locality of A. carolinensis, A. minor, and A. olsoni.[21] | |
| A. carolinensis | |||
| A. minor | |||
| A. olsoni | |||
| A. aff. torda | An auk similar to the razorbill. | ||
| A. sp. | |||
| Calidris | C. aff. melanotos | A sandpiper similar to the pectoral sandpiper. | |
| Cerorhinca | C. sp. | An auk similar to the rhinoceros auklet. | |
| Chroicocephalus | C. aff. ridibundus | A gull similar to the black-headed gull. | |
| Fratercula | F. aff. arctica | A puffin similar to the Atlantic puffin. | |
| F. aff. cirrhata | A puffin similar to the tufted puffin. | ||
| Gallinago | G. media | A snipe similar to the great snipe. | |
| Gelochelidon | G. aff. nilotica | A tern similar to the gull-billed tern. | |
| Haematopus | H. aff. palliatus | An oystercatcher similar to the American oystercatcher. | |
| H. aff. ostralegus | An oystercatcher similar to the Eurasian oystercatcher. | ||
| H. sp. | An oystercatcher. | ||
| Hydrocoloeus | H. aff. minutus | A gull similar to the little gull. | |
| Larus | L. aff. argentatus | A gull similar to the herring gull. | |
| L. aff. delawarensis | A gull similar to the ring-billed gull. | ||
| L. sp. | A gull | ||
| Leucophaeus | L. aff. atricilla | A gull similar to the laughing gull. | |
| Numenius | N. aff. borealis | A curlew similar to the Eskimo curlew. | |
| Pinguinus | P. alfrednewtoni | A large flightless auk related to the great auk. Type locality of species. |  |
| Pluvialis | P. aff. squatarola | A plover similar to the black-bellied plover. | |
| Stercorarius | S. aff. longicaudus | A skua similar to the long-tailed jaeger. | |
| S. aff. parasiticus | A skua similar to the parasitic jaeger. | ||
| S. aff. pomarinus | A skua similar to the pomarine jaeger. | ||
| S. sp. | A skua. | ||
| Thalasseus | T. aff. maximus | A tern similar to the royal tern. | |
| Tringa | T. aff. ochropus | A sandpiper similar to the green sandpiper. |
Passeriformes
| Genus | Species | Notes | Images |
|---|---|---|---|
| Corvus | C. aff. ossifragus | A crow similar to the fish crow. | _(17808723053).jpg) |
Mammals
Proboscideans
| Genus | Species | Notes | Images |
|---|---|---|---|
| Gomphotherium | G. cf. euhypodon | A gomphothere. | .jpg) |
| G. sp. |
Xenarthrans
| Genus | Species | Notes | Images |
|---|---|---|---|
| Folivora indet. (=Phyllophaga indet) | A ground sloth of uncertain affinities. |
Carnivorans
| Genus | Species | Locality | Notes | Images |
|---|---|---|---|---|
| Auroraphoca | A. atlantica | Lee Creek Mine | An earless seal. Type locality of genus and species.[22] | |
| Borophagus | B. cf. dudleyi | Lee Creek Mine | A bone-crushing dog. |  |
| B. cf. orc | ||||
| B. sp. | ||||
| Callophoca | C. obscura | Lee Creek Mine, Meherrin River, Superior Stone Company Quarry | An earless seal. |  |
| Felidae indet. | Lee Creek Mine | A cat of uncertain affinities. | ||
| Gryphoca | G. similis | Lee Creek Mine | An earless seal. | |
| Hadrokirus | H. novotini | Meherrin River | An earless seal. Type locality of species.[23] | |
| Homiphoca | ?H. capensis | Lee Creek Mine | A monachine earless seal. Type locality of H. murfreesi.[23] | |
| H. murfreesi | Meherrin River | |||
| Leptophoca | L. lenis | Meherrin River | An earless seal. Type locality of species.[23] |  |
| Lobodontini indet. | Meherrin River | A relative of Antarctic seals, of uncertain affinities.[23] | ||
| Mesotaria | M. ambigua | Lee Creek Mine | An earless seal. | |
| Ontocetus | O. emmonsi | Multiple | An odobenid related to the walrus. Type locality for genus and species. |  |
| Monachinae indet. | Lee Creek Mine | A monachine seal of uncertain affinities. | ||
| Paleophoca | P. nystii | Lee Creek Mine | An earless seal. | |
| Phocanella | P. pumila | Lee Creek Mine | An earless seal. Type locality of species.[23] | |
| Platyphoca | P. vulgaris | Lee Creek Mine | An earless seal. | |
| Sarcodectes | S. magnus | Lee Creek Mine, Meherrin River | An earless seal. Type locality of genus and species.[24] | |
| Ursidae indet. | Lee Creek Mine | A bear of uncertain affinities. |
Perissodactyls
| Genus | Species | Locality | Notes | Images |
|---|---|---|---|---|
| Nannippus | N. lenticularis | Lee Creek Mine | An equid. |  |
| Neohipparion | N. eurystyle | An equid. |  | |
| Pseudhipparion | P. simpsoni | An equid. |  | |
| Rhinocerotidae indet. | A rhinoceros. | |||
| Tapirus | T. sp. | A tapir. | .png) |
Artiodactyls
Terrestrial artiodactyls
| Genus | Species | Locality | Notes | Images |
|---|---|---|---|---|
| Antilocapridae indet. | Lee Creek Mine | An antilocaprid of uncertain affinities. | ||
| Camelidae indet. | A camelid of uncertain affinities. | |||
| cf. Hemiauchenia | cf. H. sp. | A lamine camelid. |  | |
| Kyptoceras | K. amatorum | A protoceratid. |  | |
| Pediomeryx | P. sp. | A dromomerycid. | ||
| Ruminantia indet. | A ruminant of uncertain affinities. | |||
| Tayassuidae indet. | A peccary of uncertain affinities. |
Cetaceans
Based on:[25]
| Genus | Species | Locality | Notes | Images |
|---|---|---|---|---|
| Aprixokogia | A. kelloggi | A kogiid sperm whale. Type locality of genus and species.[26] |  | |
| Auroracetus | A. bakerae | A pontoporiid dolphin. Type locality of genus and species.[27] | ||
| Balaena | B. palaeatlantica | A relative of the bowhead whale. Type locality of species.[28] |  | |
| ?B. prisca | An alleged bowhead whale, but more likely a cetothere.[28] | |||
| B. ricei | A relative of the bowhead whale. Type locality of species.[28] | |||
| B. sp. | ||||
| Balaenoptera | B. acutorostrata | The modern minke whale. |  | |
| B. borealina | A rorqual whale. | |||
| Balaenotus | B. sp. | A balaenid whale. |  | |
| Balaenula | B. sp. | A balaenid whale. |  | |
| Bohaskaia | B. monodontoides | A monodontid. Type locality of genus and species.[29] |  | |
| Cetotheriinae indet. | A cetothere. | |||
| Cetotherium | C. crassangulum | A cetothere. |  | |
| C. polyporum | ||||
| Delphinapterus | D. orcinus | A relative of the beluga whale. |  | |
| D. sp. | ||||
| Delphinidae indet. | An oceanic dolphin. | |||
| Delphinus | D. sp. | A relative of the common dolphin. |  | |
| Globicephala | G. sp. | A pilot whale. |  | |
| Gricetoides | G. aurorae | An eschrichtiid relative of the gray whale. Type locality of genus and species.[30] | ||
| Herpetocetus | H. sendaicus | A cetothere. |  | |
| H. transatlanticus | ||||
| cf. Kogia | cf. K. breviceps | A kogiid reminiscent of the pygmy sperm whale.[31] |  | |
| Kogiidae indet. | A large kogiid of uncertain affinities.[31] | |||
| cf. Kogiopsis | cf. K. floridana | A kogiid. | ||
| Lagenorhynchus | L. harmatuki | A white-sided dolphin. Type locality of species.[32] |  | |
| L. sp. | ||||
| Megaptera | M. sp. | A relative of the humpback whale. |  | |
| Mesoplodon | M. longirostris | A beaked whale. | _(21866206616).jpg) | |
| Mesoteras | M. kerrianus | A baleen whale. Type locality of genus and species. | ||
| cf. Monodon | M. sp. | A potential relative of the narwhal. |  | |
| Ninoziphius | N. platyrostris | A beaked whale. |  | |
| Orycterocetus | O. cornutidens | A physeterid. |  | |
| O. quadratidens | ||||
| cf. Physeter | cf. P. macrocephalus | A physeterid, potentially the modern sperm whale. |  | |
| Physeteridae indet. | A physeterid. | |||
| cf. Physeterula | cf. P. dubusi | A physeterid. | ||
| cf. Plesiocetus | cf. P. sp. | A rorqual. | ||
| Pliopontos | P. littoralis | A pontoporiid dolphin. |  | |
| Pseudorca | P. sp | A relative of the false killer whale. | ||
| cf. Pontoporia | cf. P. sp. | A pontoporiid dolphin. | ||
| cf. Scaldicetus | cf S. sp. | A physeterid. |  | |
| Stenella | S. rayi | An oceanic dolphin. |  | |
| S. sp. | ||||
| Tursiops | T. sp. | A bottlenose dolphin. |  | |
| Ziphius | Z. cavirostris | The modern Cuvier's beaked whale. |  |
