United States Geological Survey

USGS

The United States Geological Survey (USGS), founded as the Geological Survey, is an agency of the United States Department of the Interior whose work spans the disciplines of biology, geography, geology, and hydrology. The agency was founded on March 3, 1879, to study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The agency also makes maps of planets and moons, based on data from U.S. space probes.

Genres

2 genres

Triceratops

Dinosaures

Valid 2 occ.

Allosaurus

Dinosaures

Valid 1 occ.

Par groupe

Dinosauria 22

Pterosauria 1

Mosasauridae 1

Sauropterygia 1

Formations principales

Newark Canyon 9

Judith River 5

Eutaw 2

Ferris 2

Hell Creek 1

Lakota 1

Lance 1

Medicine Bow 1

Morrison 1

Tropic Shale 1

Wahweap 1

Principaux collecteurs

J. F. Smith 9

F. v. Hayden 5

Wolcott 1

F. V. Hayden & Sully 1

W. J. Gwilliam 1

F. Peterson 1

H. A. Waldrop, F. Peterson, R. L. Sutton, & G. W. Horton 1

H. Gregory 1

Activité de collecte par décennie

1850s 5

1860s 1

1900s 1

1950s 1

1960s 12