Alan Cressler:
Acrocyathus floriformis (possible identification), Cox Cave System, Sharp-Bingham Mountain Preserve, The Nature Conservancy, Jackson County, Alabama 1
Alan Cressler:
Acrocyathus floriformis (possible identification), Cox Cave System, Sharp-Bingham Mountain Preserve, The Nature Conservancy, Jackson County, Alabama 2
Alan Cressler:
Actaeonellid Gastropod Fossil, Cretaceous Age, Cotui Limestone, Cueva la Tuna, Municipio de Cabo Rojo, Puerto Rico 1
Alan Cressler:
Actaeonellid Gastropod Fossil, Cretaceous Age, Cotui Limestone, Cueva la Tuna, Municipio de Cabo Rojo, Puerto Rico 2
Alan Cressler:
Actinoceras species (possible identification), Middle Ordovician age Bigby-Cannon Limestone, New Salem Cave No. 3, Smith County, Tennessee 1
Alan Cressler:
Actinoceras species (possible identification), Middle Ordovician age Carters Limestone, Beasleys Bend Cave, Smith County, Tennessee 1
Alan Cressler:
Alligator mississippiensis, Dermal Scute, Old Turtle's Cave, Citrus County, Florida 1
Alan Cressler:
Alligator mississippiensis, Tooth, Old Turtle's Cave, Citrus County, Florida 1
Alan Cressler:
Alligator species (Miocene Age), Gray Fossil Site, Washington County, Tennessee 1
Alan Cressler:
Allosaurus (Therapod), Dinosaur Tracks, Jurassic Age, Salt Wash Member of Morrison Formation, Copper Ridge Dinosaur Trackway, BLM, Grand County, Utah 1
Alan Cressler:
Almandine, Coweeta Group, Biotite Gneiss-Amphibolite, Nantahala National Forest, Macon County, North Carolina 1
Alan Cressler:
Almandine, Coweeta Group, Biotite Gneiss-Amphibolite, Nantahala National Forest, Macon County, North Carolina 2
Alan Cressler:
Almandine, Coweeta Group, Biotite Gneiss-Amphibolite, Nantahala National Forest, Macon County, North Carolina 3
Alan Cressler:
Almandine, Garnet Schist, Garnet Hill, Paulding County, Georgia 1
Alan Cressler:
Almandine, Standing Indian Mountain, Southern Nantahala Wilderness, Nantahala National Forest, Clay County, North Carolina 1
Alan Cressler:
Altamaha Formation Cliffs, Rocky Creek Canyon, Broxton Rocks Preserve, The Nature Conservancy, Coffee County, Georgia 1
Alan Cressler:
Altamaha Formation, Flat Rock, Rocky Creek Canyon, Broxton Rocks Preserve, The Nature Conservancy, Coffee County, Georgia 1
Alan Cressler:
Ammonite No. 1, Mississippian Age, Pennington Formation, Raccoon Mountain, Hamiliton County, Tennessee 1
Alan Cressler:
Ammonite No. 1, Mississippian Age, Pennington Formation, Raccoon Mountain, Hamiliton County, Tennessee, Alan Cressler 1
Alan Cressler:
Ammonite No. 2, Mississippian Age, Pennington Formation, Raccoon Mountain, Marion County, Tennessee 1
Alan Cressler:
Ammonite, Hugden Branch, Marion County, Tennessee 1
Alan Cressler:
Amusium ocalanum, Bumpnose Limestone, Bunker Cave, Jackson County, Florida 1
Alan Cressler:
Amusium ocalanum, Bumpnose Limestone, Bunker Cave, Jackson County, Florida 3
Alan Cressler:
Amusium ocalanum, Bumpnose Limestone, Lennox Cave, Jackson County, Florida 1
Alan Cressler:
Amusium ocalanum, Bumpnose Limestone, Lennox Cave, Jackson County, Florida 2
Alan Cressler:
Amusium ocalanum, Bumpnose Limestone, Lennox Cave, Jackson County, Florida 3
Alan Cressler:
Anastasia Formation, Blowing Rocks, Blowing Rocks Preserve, The Nature Conservancy, Jupiter Island, Martin County, Florida 1
Alan Cressler:
Anastasia Formation, House of Refuge, Hutchinson Island, Martin County, Florida 1
Alan Cressler:
Anastasia Formation, Laminated Calcium Carbonate Crust, House of Refuge, Hutchinson Island, Martin County, Florida 1
Alan Cressler:
Anastasia Formation, Laminated Calcium Carbonate Crust, House of Refuge, Hutchinson Island, Martin County, Florida 2
