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  • Skull of a Basilosaurus cetoides, a fossil whale

    Alabama

    Basilosaurus (Basilosaurus cetoides)
  • Mounted complete skeleton of a woolly mammoth with its front legs bent, head angled down, and tusks sweeping the ground.

    Alaska

    Woolly Mammoth (Mammuthus primigenius)
  • Skeleton of a large bat in a display case with its arms bent like the letter W and long fingers coming down off the end of each arm.

    American Samoa

    Samoan Fruit Bat (Pteropus samoensis)
  • Two very large pieces of blackish-brown rock in a museum display case. The top one is gumdrop-shaped and has a large hole in it and its surface looks smooth, but has many indentations. The bottom one is just as wide as the top piece, but only one-third as tall with no holes. It also has a smooth surface with indentations.

    Arizona

    Tucson Meteorite
  • Huge cluster of sparkling white and clear quartz crystals on a platform in an exhibit.

    Arkansas

    Berns Quartz
  • Saber-toothed cat

    California

    Saber-tooth Cat (Smilodon fatalis)
  • Complete fossil Stegosaurus skeleton displayed vertically on a wall in an exhibit case. The bones are in a bit of a jumble. The head is on the right side, many of the ribs are right next to each other, the feet are not all pointing down, and some of the plates are not on its back.

    Colorado

    Stegosaur (Stegosaurus stenops)
  • Large brown and gray rock on a platform in an exhibit case, with two other rocks or minerals above it.

    Connecticut

    Kyanite-Chlorite Schist
  • Exhibit case titled Common Rock-Forming Minerals. Three sections on the right contain specimens of quartz, feldspar, and iron-rich minerals. On the left is an oversized magnifying glass showing a zoomed-in image of a rock with its mineral components labeled.

    Delaware

    Feldspar (Plagioclase)
  • Two taxidermy passenger pigeons sitting on a branch in an exhibit case.

    District of Columbia

    Passenger Pigeon (Ectopistes migratorius)
  • Manatee skeleton mounted on a wall

    Florida

    Trichechus manatus (Manatee)
  • Thin, white rock mottled with gray. The rock has 11 pockets in it of various sizes, making it look like a misshapen egg carton.

    Georgia

    Quartz
  • Pressed plant specimen on white paper. The specimen is a thin branch with seven stems coming off it, with brown leaves at the end.

    Guam

    Pogostemon guamensis
  • Brown slab of rock with five stalactites of the same color dripping down its face.

    Hawaii

    Basalt Stalactite
  • Large, dark gray triangular shaped rock with many dimples in it. The rock is on a museum display platform with a label behind it titled Oakley.

    Idaho

    Oakley Meteorite
  • Large, purple crystals of fluorite on a yellow rock base in an exhibit case. The crystals are nine large cubes positioned at different angles to each other.

    Illinois

    Fluorite
  • Articulated fossil skeleton of an American mastodon on a black background.

    Indiana

    American Mastodon (Mammut americanum)
  • Pentagonal piece of rock with three or four fossil crinoids embedded in it. The crinoids are protruding out of the rock. One looks like an octopus with 26 legs, while the others look like flowers on long, ribbed stalks.

    Iowa

    Platycrinus symmetricus (Crinoid)
  • The head, forelimbs, and upper body of a Tylosaurus skeleton

    Kansas

    Mosasaur (Tylosaurus proriger)
  • Tan and white fossil sea urchin skeleton, roughly spherical in shape but with ridges and troughs running from top to bottom, like an acorn squash.

    Kentucky

    Melonechinus indianesis (Sea Urchin)
  • Articulated medium-size turtle skeleton in an exhibit display case with other turtle skeletons.

    Louisiana

    Alligator Snapping Turtle (Macroclemys temminckii)
  • Head and neck of a taxidermied Fisher, a large weasel-like animal.

    Maine

    Fisher (Martes pennanti)
  • Large fossil mounted on a pole in front of a painting of an underwater scene. The fossil is long and horizontal, with two big eye sockets and what looks like a long jawbone.

    Maryland

    Baleen Whale (Diorocetus hiatus)
  • Head and front flippers of an Atlantic white-sided dolphin

    Massachusetts

    Atlantic White-sided Dolphin (Lagenorhychus acutus)
  • Large, wavy sheet of copper mounted on a wall. The copper has black splotches and striations on it.

    Michigan

    Copper
  • Large piece of gray rock with white speckles, sitting on a pedestal in an exhibit display.

    Minnesota

    Olivine Gabbro
  • Skull, neck and one forefoot of an alligator skeleton on display on a wall.

    Mississippi

    Alligator (Alligator mississippiensis)
  • Articulated skeletons of three bony fish in an exhibit case titled, Carps, Catfishes, and Their Relatives. One fish is three times as long and much larger than the others.

    Missouri

    Blue Catfish (Ictalurus furcatus)
  • Close up of of the skull of an articulated T. rex skeleton biting the frill of a Triceratops skeleton.

    Montana

    Theropod Dinosaur (T. rex)
  • Diorama of a paleobeaver and its underground den. A fossil burrow shaped like a corkscrew is in the underground part of the display.

    Nebraska

    Beaver inside fossil burrow (Fossorcastor fossor)
  • An irregular-shaped opal with blue, green, black, brown, and red coloring.

    Nevada

    Opal (Roebling Opal)
  • Large blue, brown, and white stone with six flat sides.

    New Hampshire

    Beryl
  • Dozens of rocks of different sizes and shapes glowing fluorescent green, orange, and red in a dark exhibit case.

    New Jersey

    Sterling Hill Mine Specimens
  • Large mineral specimen consisting of many light blue crystals of Smithsonite. It is sitting on a pedestal in an exhibit case. Underneath the mineral is a label, reading Smithsonite, Zn CO 3, Kelly mine, Soccoro County, New Mexico. Next to it is a piece of green malachite.

    New Mexico

    Smithsonite
  • Dark brown fossil embedded in a sandy colored rock. The fossil is a creature with a segmented body that tapers into a pointed tail. It has six small appendages on its head and two paddle-like appendages jutting out on opposite sides of the body.

    New York

    Eurypterid Arthropod (Eurypterus remipes)
  • Large, open fossil shark jaws with huge teeth, on display in a tall museum case in an exhibit hall.

    North Carolina

    Carcharocles megalodon
  • Two white and brown fossil fan-shaped leaves embedded in a piece of brown, yellow, and white rock.

    North Dakota

    Ginkgo Tree Leaf (Ginkgo wyomingensis)
  • Image coming soon

    Northern Mariana Islands

  • Black fossil skull of an armored fish. Its jaws are open and have two very large canine teeth on both the upper and lower jaws. There is a large eye socket above the upper jaw.

    Ohio

    Dunkleosteus terrelli
  • Thin piece of clear gypsum, with brown grains in it that form an hourglass shape. The gypsum is on a shelf with two other gypsum specimens in an exhibit case. Below it is a label reading, Gypsum with sand inclusions, CA SO4 H2O, Cherokee Flats, Oklahoma.

    Oklahoma

    Gypsum
  • A beaver skull attached to a wall in an exhibit. The jaws have four prominent incisor teeth in the front, two on top and two on the bottom. Farther back in the mouth are four flatter sets of molars.

    Oregon

    Beaver (Castor canadensis)
  • Bronze tree trunk on a white platform in front of an exhibit about coal.

    Pennsylvania

    Lycopsid Tree Trunk
  • Slab of brownish-yellow rock with eight lighter brown and white, circular fossils in it. The fossils are segmented and look like wheels or tires.

    Puerto Rico

    Praebarrettia coatesi (Rudist Bivalve)
  • White and lavender quartz crystals

    Rhode Island

    Quartz (var. amethyst)
  • Tan fossil sand dollar with 9970 written on it. There is a round hole near the bottom of the fossil.

    South Carolina

    Encope macrophora (Sand Dollar)
  • Fossil skull and neck of a Didelphodon vorax.

    South Dakota

    Marsupial Mammal (Didelphodon vorax)
  • Fossilized colony of cylindrical corals.

    Tennessee

    Acrocyathus proliferus (Colonial Cup Coral)
  • Skull, front body and a foreleg of a complete, mounted Dimetrodon skeleton.

    Texas

    Early Synapsid (Dimetrodon grandis)
  • Image coming soon

    U.S. Virgin Islands

  • Diplodocus skeleton in the Hall of Fossils.

    Utah

    Sauropod Dinosaur (Diplodocus hallorum)
  • Brown, maroon, and black fossil trilobite in a piece of tan rock.

    Vermont

    Trilobite (Mesonacis vermontanus)
  • Lorton meteorite, a rectangular gray and white rock.

    Virginia

    Lorton Meteorite
  • A large slab of rock made up of short columns of gray rock on an exhibit platform that takes up a large amount of floor space in a gallery. The columns are different heights, and are bunched together, with cracks separating them. Many have five or six uneven sides.

    Washington

    Columnar Dacite Lava
  • Adult black bear with a tiny cub next to it in an exhibit case.

    West Virginia

    American Black Bear (Ursus americanus)
  • A porcupine sitting on its hind legs on a log in an exhibit.

    Wisconsin

    North American Porcupine (Erethizon dorsatum)
  • Complete skeleton of an early horse embedded in a slab of rock.

    Wyoming

    Early Horse (Protorohippus venticolum)

Alaska
Hawaii