List of the Cenozoic life of Maryland

This list of the Cenozoic life of Maryland contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Maryland and are between 66 million and 10,000 years of age.

Illustration of a living Acipenser sturgeon
Fossilized skull of the Miocene baleen whale Aglaocetus
Life restoration of the Miocene-Pliocene beardog Amphicyon
Restoration of an Arctodus , or short-faced bear, with a human to scale
Shell of a modern Astarte bivalve
Life restoration of the Miocene stargazer Astroscopus countermani
Life restoration of the Miocene sperm whale Aulophyseter
Portrait of a living Balaenoptera baleen whale
A living Blarina brevicauda , or northern short-tailed shrew
A living Brevoortia tyrannus , or Atlantic menhaden
A living Callinectes sapidus , or Chesapeake blue crab
A living Calonectris shearwater
Illustration in multiple views of a fossilized skull of the Pleistocene Canis armbrusteri , or Armbruster's wolf
Fossilized tooth of the Miocene-Pliocene shark Cosmopolitodus hastalis , or broad-toothed mako
Life restoration of the Miocene-Pliocene whale Cetotherium
Shells of the Pliocene scallop Chesapecten jeffersonius
A living Chrysemys picta , or painted turtle
Fossil of the Miocene-Pleistocene barnacle Concavus
Shell of a Corbula basket clam
Fossil of the Early Cretaceous-Eocene shark Cretolamna
A living Cryptobranchus alleganiensis , or hellbender salamander
Shell in multiple views of a Cyrtopleura costata , or angel wing clam
A living Dasyatis stingray
Underside of the reconstructed cranium of the Miocene baleen whale Diorocetus
Fossil shell of the Cretaceous-modern marine venus clam Dosinia
Illustration of a fossilized shell of the Miocene murex sea snail Ecphora gardnerae
Fossilized cranium in multiple views of the Paleocene-Eocene gavial relative Eosuchus
Life restoration of the Pleistocene bovid Euceratherium , or the shrub ox. Robert Bruce Horsfall (1913).
Life restoration of the Miocene whale Eurhinodelphis (above)
Living Fistulobalanus barnacles
A living Galeocerdo cuvier , or tiger shark
Fossilized skull of the Miocene crocodile relative Gavialosuchus
A living Glaucomys , or New World flying squirrel
Mounted fossilized skeleton of the Miocene-Pleistocene elephant relative Gomphotherium
Shells in differing orientations of Hastula augur sea snails
Fossilized teeth of the Miocene weasel shark Hemipristis serra
Mounted fossilized skeleton of the Miocene-Pliocene horse Hippotherium
Fossilized skeleton of the Middle Jurassic-Miocene Chimaera relative Ischyodus
Life restoration of the Oligocene-Miocene dolphin Kentriodon
A modern Lamna mackerel shark
A living Lepus americanus , or snowshoe hare
Pair of living Lontra canadensis , or North American river otter
Shell of a Limecola balthica , or Baltic clam
Life restorations of a Mammut americanum , or American mastodon (right), and a Mammuthus primigenius , or wooly mammoth (left)
A living Marmota monax , or groundhog
Mounted fossilized skeleton of the Miocene-Pleistocene ground sloth Megalonyx
Collection of Mercenaria mercenaria , also known as hard clams or quahogs
Mounted fossilized skeleton of the Miocene-Pleistocene manatee relative Metaxytherium
Restoration of the Pliocene-Pleistocene Miracinonyx , or American cheetah
A living Neovison vison , or American mink
Fossilized skeleton of the Pliocene-Holocene peccary Mylohyus
A living Nassarius , or nassa mud snail
A living Nerodia sipedon , or northern water snake
Close-up portrait of a living Notorynchus cepedianus , or broadnose sevengill shark
A living Odontaspis sand shark
Life restoration of the Miocene sperm whale Orycterocetus
At the top of the picture is a line representing twenty meters. Below this is a gray megalodon silhouette that measures twenty meters, below is a red megalodon silhouette that measures fifteen meters, below is a violet whale shark silhouette that measures ten meters, below is a green great white shark that measures five meters. Standing next to this shark is a black human silhouette that stands two meters.
Diagram illustrating the largest (grey) and most conservative (red) size estimates of the Miocene-Pliocene shark Carcharocles megalodon (sometimes Carcharodon or Otodus megalodon ) with a whale shark (violet), great white shark (green), and anachronistic human (black) to scale
Restoration of the Cretaceous-Eocene sea snake Palaeophis
A living Panthera leo , or lion
A living Perisoreus canadensis , or grey jay
Life restoration of the Paleocene-Eocene ungulate Phenacodus . Charles R. Knight (1898).
Shell of a Pitar venus clam
Restoration of a herd of alarmed Miocene-Pleistocene peccaries of the genus Platygonus . Charles R. Knight (1922).
A living Pogonias cromis , or black drum
Life restoration of the Paleocene-Eocene waterfowl Presbyornis
A living Pseudacris triseriata , or western chorus frog
A living Puffinus shearwater
Shell of a Quinqueloculina foraminiferan
A living Lithobates clamitans (sometimes Rana clamitans ), or green frog
A living Morone saxatilis (formerly Roccus saxatilis ), or striped bass
Fossilized teeth of the Neogene sperm whale Scaldicetus
Fossilized skull of the Miocene toothed whale Schizodelphis
Life restoration of the Pleistocene-Holocene saber-tooth cat Smilodon
A living Sorex cinereus , or cinereus shrew
A living Sphyrna hammerhead shark
Life restoration of the Oligocene-Miocene shark-toothed dolphin Squalodon
Illustration of a living Squilla empusa mantis shrimp
A living Synaptomys cooperi , or southern bog lemming
A living Tapirus , or tapir
Fossilized skeleton of the Oligocene-Miocene gavial relative Thecachampsa
A living Tremarctos , or spectacled bear
Fossilized shells of the Late Jurassic-modern tower snail Turritella
A living Tursiops , or bottlenose dolphin
A living Ursus americanus , or American black bear
A living Vespertilio bat
Fossilized skeleton of the Miocene whale Xiphiacetus
Illustration of the shell of a Yoldia limatula , or file yoldia