Gnorimosphaeroma oregonensis

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Gnorimosphaeroma oregonensis
Gnorimosphaeroma oregonensis - o2.jpg
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Crustacea
Class: Malacostraca
Order: Isopoda
Family: Sphaeromatidae
Genus: Gnorimosphaeroma
Species: G. oregonensis
Binomial name
Gnorimosphaeroma oregonensis
(Dana, 1853) [1]

Sphaeroma oregonensis Dana, 1853

Gnorimosphaeroma oregonensis, the Oregon pill bug, is a small intertidal isopod crustacean. It is an oval-shaped organism roughly 6 mm in length,[2] and about twice as long as it is wide. The primary habitat of G. oregonensis is the mid-Californian to Alaskan coast, where it inhabits tidal pools and the intertidal region up to depths of 24 metres (79 ft).[3]


  1. ^ Richard C. Brusca; Vânia R. Coelho; Stefano Taiti (2001). "List of All California Marine Isopods".
  2. ^ Edward F. Ricketts; Jack Calvin; David W. Phillips & Joel W. Hedgpeth (1992). "Rocky shores of bays and estuaries". Between Pacific Tides (5th ed.). Stanford University Press. pp. 269–316. ISBN 978-0-8047-2068-7.
  3. ^ Richard C. Brusca; Vania R. Coelho; Stefano Taiti (2007). "Isopoda". In Sol Felty Light; James T. Carlton. The Light and Smith Manual: Intertidal Invertebrates from Central California to Oregon (4th ed.). University of California Press. pp. 503–541. ISBN 978-0-520-23939-5.