Steller's jay is a bird native to western North America and the mountains of Central America, closely related to the blue jay found in eastern North America. It is the only crested jay west of the Rocky Mountains. It is also sometimes colloquially called a "blue jay" in the Pacific Northwest, but is distinct from the blue jay of eastern North America. The species inhabits pine-oak and coniferous forests.
The great grey owl is a true owl, and is the world's largest species of owl by length. It is distributed across the Northern Hemisphere, and it is the only species in the genus Strix found in both Eastern and Western Hemispheres. In some areas it is also called the Phantom of the North, cinereous owl, spectral owl, Lapland owl, spruce owl, bearded owl, and sooty owl.
Harpaphe haydeniana, commonly known as the yellow-spotted millipede, almond-scented millipede or cyanide millipede, is a species of polydesmidan ("flat-backed") millipede found in the moist forests along the Pacific coast of North America, from Southeast Alaska to California. The dark coloration with contrasting yellow-tipped keels warn of its ability to exude toxic hydrogen cyanide as a defense. The cyanide secretions are not dangerous to humans, but can cause irritation and pain if it contacts sensitive areas such as the mouth, eyes, or nose.
The northern red-legged frog is a species of amphibian whose range is the coastal region stretching from southwest British Columbia to southern Mendocino County in Northern California, and is protected in Oregon and California. As a member of the genus Rana, this species is considered a true frog, with characteristic smooth skin and a narrow waist. This frog requires still waters for breeding, and is rarely found at any great distance from its breeding ponds or marshes.
Pleuropogon is a genus of Arctic and North American plants in the grass family known generally as semaphore grass.
Xystodesmidae is a family of millipedes in the suborder Leptodesmidea within the order Polydesmida. The family Xystodesmidae was created by the American biologist Orator F. Cook in 1895 and named after the genus Xystodesmus. This family includes more than 390 known species distributed among 62 genera. Many species, however, remain undescribed: for example, it is estimated that the genus Nannaria contains over 200 species, but only 25 were described as of 2006. By 2022, 78 species in Nannaria have been described.
Tylobolus is a genus of millipedes in the order Spirobolida with seven known species found in western North America. It is in the family Spirobolidae, and is the type genus of the subfamily Tylobolinae. The genus was named by Orator F. Cook in 1904.
Hiltonius is a genus of cylindrical millipedes in the family Spirobolidae comprising 10 species ranging from the southwestern United States to Guatemala, with most species being found in Mexico. The genus was named by Ralph Vary Chamberlin in 1918, after Professor William A. Hilton of Pomona College who collected the type specimen of H. pulchrus.
Orthomorpha coarctata, the long-flange millipede, is a widely introduced species of Polydesmidan millipede of the family Paradoxosomatidae. It is presumed native to Southeast Asia but due to transport by humans occurs in tropical and sub-tropical areas throughout the world, including the Hawaiian Islands, the West Indies, Gulf Coast of North America, and the Galápagos Islands.
Paeromopodidae is a family of large cylindrical millipedes of the order Julida native to the western United States of America. The family contains two genera and ten species and includes the longest millipedes in North America, with individuals reaching up to 16.5 cm (6.5 in) long.
Paeromopus is a genus of large cylindrical millipedes endemic to the U.S. state of California. All species exceed 10 centimeters in length, and the largest, P. paniculus, reaching 16.5 cm is the longest millipede species in North America. The genus was named by German entomologist Ferdinand Karsch in 1881 and contains four species: three occupying small ranges in the Sierra Nevada mountains and one occupying a large range including the Sierra Nevada and much of Northern California to the Central Coast.
Californiulus is a genus of cylindrical millipedes containing six species native to the western United States.
Californiulus yosemitensis is a species of cylindrical millipede in the family Paeromopodidae that is found in western North America: predominantly in the Sierra Nevada of California but also extending into southeastern Oregon and parts of Nevada.
Paeromopus angusticeps is a species of millipede found in the U.S. state of California. It occupies the largest geographic range of all four species of Paeromopus, occupying much of Northern California in a large arc extending from Monterey County on the central coast, north along the Coast Ranges to Humboldt County, and descending along the Cascades and Sierra Nevada range of eastern California. P. angusticeps is largely absent from California's Central Valley.
Selenocheir sinuata is a species of flat-backed millipede in the family Xystodesmidae, endemic to Northern California. The Species was first described by Rowland M. Shelley in 1994 based on samples collected by J. S. Buckett and M. R. Gardner in 1966
Anombrocheir is a genus of millipedes belonging to the family Xystodesmidae. The species of this genus are endemic to California where they are found in the inner Coastal mountain range of Colusa and Glenn counties.
The Pacific marten is a species of North American mammal, a member of the family Mustelidae. It is found throughout western North America.
Selenocheir arcuata is a species of Xystodesmid millipede found in Northern California. The species was first described by Rowland M. Shelley in 1994 based on samples collected by C. Smith, J. Clover, and F. Ennik in 1972.
Orophe unicus is a species of millipede in the family Xystodesmidae, which is found in the Rocky Mountains of northern Idaho. The species was originally described as Chipus unicus by H.F. Loomis in 1953 and was later transferred to Orophe by R.L. Hoffman in 1964. Hoffman also suggested that the differences in the gonopods of O. unicus and O. cabinetus were minor and so the relationship between the two may be "subspecific". Loomis and Schmidt later synonymized O. unicus under O. cabinetus based on the subtle nature of this feature. In 1993, Rowland Shelley reexamined the type specimens and based on the differences in the gonopods as well as the allopatric nature of the two populations, reinstated O. unicus as a valid species.
