UNITED STATES OF AMERICA

NIOBRARIAN AGE

UNITED STATES

KANSAS

GOVE COUNTY

LOGAN COUNTY

NEBRASKA

HARLAN COUNTY

LOWER NAVESINKIAN AGE

UPPERMOST CAMPANIAN-LOWERMOST MAASTRICHTIAN STAGE

ALABAMA

In general

MONTGOMERY COUNTY

NEW MEXICO

RIO ARRIBIA COUNTY

SANDOVAL COUNTY

KIRTLANDIAN AGE

FRUITLAND FORMATION

IN GENERAL

NORTH AMERICA

UNITED STATES

NEW MEXICO

In general

McKINLEY COUNTY

SAN JUAN BASIN

SAN JUAN COUNTY

NE-NAH-NE-ZAD MEMBER

 

FOSSIL FOREST MEMBER

NORTH AMERICA

UNITED STATES

NEW MEXICO

In general

SAN JUAN BASIN

SANJUAN COUNTY

FRUITLAND OR KIRTLAND FORMATION

NORTH AMERICA

UNITED STATES

NEW MEXICO

IN GENERAL

KIRTLAND FORMATION

IN GENERAL

NORTH AMERICA

UNITED STATES

NEW MEXICO

In general

SAN JUAN BASIN

SAN JUAN COUNTY

HUNTER WASH MEMBER

NORTH AMERICA

UNITED STATES

NEW MEXICO

In general

SAN JUAN BADLANDS

SAN JUAN COUNTY

FARMINGTON MEMBER

NORTH AMERICA

UNITED STATES

NEW MEXICO

In general

SAN JUAN BASIN

SAN JUAN COUNTY

DE-NA-ZIN MEMBER

NORTH AMERICA

UNITED STATES

NEW MEXICO

In general

SAN JUAN BASIN

SAN JUAN COUNTY

IN GENERAL

ALABAMA

In general

AUTANGA COUNTY

BARBOUR COUNTY

DALLAS COUNTY

GREENE COUNTY

HALE COUNTY

RUSSELL COUNTY

ALASKA

In general

ARIZONA

In general

PIMA COUNTY

ARKANSAS

In general

HEMPSTEAD COUNTY

CALIFORNIA

In general

BUTTE COUNTY

PLACER COUNTY

RIVERSIDE COUNTY

SAN DIEGO COUNTY

TEHAMA COUNTY

COLORADO

In general

ARCHULETA COUNTY

DELTA COUNTY

LA PLATA COUNTY

LAS ANIMAS COUNTY

MESA COUNTY

MOFFAT COUNTY

RIO BLANCO COUNTY

DELAWARE

In general

NEW CASTLE COUNTY

DELAWARE AND NEW JERSEY

In general

GEORGIA

In general

STEWART COUNTY

KANSAS

GOVE COUNTY

WALLACE COUNTY

MONTANA

In general

CHOUTEAU COUNTY

FEIGNS COUNTY

FERGUS COUNTY

GLACIER COUNTY

PHILLIPS COUNTY

ROSEBUD COUNTY

STILLWATER COUNTY

SWEETGRASS COUNTY

WHEATLAND COUNTY

NEBRASKA

In general

BURT COUNTY

HARLAN COUNTY

NEW JERSEY

In general

BURLINGTON COUNTY

CAMDEN COUNTY

GLOUCESTER COUNTY

MONMOUTH COUNTY

NEW MEXICO

In general

CIBOLA COUNTY

COLFAX COUNTY

McKINLEY COUNTY

RIO ARRIBA COUNTY

SANDOVAL COUNTY

SAN JUAN BASIN

SAN JUAN COUNTY

NORTH CAROLINA

In general

BLADEN COUNTY

SAMPSON COUNTY

NORTH DAKOTA

 

SOUTH DAKOTA

In general

CUSTER COUNTY

FALL RIVER COUNTY

HUGHES COUNTY

LYMAN COUNTY

PENNINGTON COUNTY

SHANNON COUNTY

TENNESSEE

In general

DECATUR COUNTY

TEXAS

In general

BREWSTER COUNTY

FANNIN COUNTY

MCLENNAN COUNTY

UTAH

In general

EMERY COUNTY

CARBON COUNTY

GARFIELD COUNTY

GRAND COUNTY

KANE COUNTY

WYOMING

In general

NATRONA COUNTY

NIOBRARA COUNTY

SWEETWATER COUNTY

WASHAKIE COUNTY

WHEATLAND COUNTY