Taxonomic Sources

Jepson eFlora (California plants)

AmphibiaWeb (amphibians worldwide)

The Reptile Database (reptiles worldwide)

Other Sources of Taxonomic Information

IOC (birds, worldwide; the definitive global list, updated quarterly)

American Ornithologists' Union (AOU) Checklist (North American birds)

Sibley's "New bird names in the 52nd AOU Checklist supplement" (2011) (North American birds)

Sibley's "Name changes of birds in the 2012 AOU supplement" (North American birds)

Wilson & Reeder's Mammal Species of the World (mammals worldwide)

World Register of Marine Species (WoRMS) (marine species worldwide)

MykoWeb (California fungi)

IndexFungorum (fungi worldwide)

USDA GRIN (plants, worldwide but with N American emphasis)

The Plant List - A Working List of All Plant Species (plants worldwide)

FishBase (fish worldwide)

BugGuide (North American insects, spiders, and kin)

ITIS (USDA Integrated Taxonomic Information System) (plants and animals)

Encyclopedia of Life (plants and animals)

Links to Species Information from Individual Photos

AmphibiaWeb (amphibians worldwide)

The Reptile Database (reptiles worldwide)

FishBase (fish worldwide)

Calflora (California plants)

USDA PLANTS (United States plants)

Museum of Vertebrate Zoology

University of California Museum of Paleontology

University and Jepson Herbaria

Online Sites that Offer Identification Help

CNPS FaceBook group -- California plants

BugGuide -- North American insects

Reference Support

California Academy of Sciences reference librarians

Berkeley Natural History Museums

AmphibiaWeb

Museum of Vertebrate Zoology

University and Jepson Herbaria

University of California Museum of Paleontology

CalPhotos Contributing Photographers