Galapagos Species Database

The Galapagos Species Database shares the information about the species from our Natural History Collections.

Tonicia arnheimi Dall, 1903

tonicia de Galápagos, Galapagos tonica

Length: 15 mm;width: 7 mm.

Shallow water (less than 200 m depth), subtidal.

Taxonomy

Domain
Eukaryota

Kingdom
Animalia

Phylum
Mollusca

Class
Polyplacophora

Order
Chitonida

Suborder
Chitonina

Superfamily
Chitonoidea

Family
Chitonidae

Genus
Tonicia

Species
arnheimi

Taxon category: Accepted

Syn.: Tonicia forbesii arnheimi, T. forbesii, T. crenulata, CAS: several lots (ex.: 40355, 40357, 40358, 40359, 40498, 42192), AMNH: 139045, 139046, 160721, USNM: 170297 (Holotype), LACM34-20, 34-21, 34-26, fide Kaiser (1997), C.P. Hickman collection 97-82, 97-173

Origin: Endemic

Status

IUCN Red List Category: Not evaluated

Distribution

Map of specimen collection localities or observation records for this species in our collections database.

Distribution: Ecuador (Galapagos Islands).

References

  • Appeltans, W. Bouchet, P., Boxshall, G.A., Fauchald, K., Gordon, D.P., Hoeksema, B.W., Poore, G.C.B., van Soest, R.W.M., Stöhr, S., Walter, T.C., Costello, M.J. (eds.) (2010) World Register of Marine Species (WoRMS). Available online at http://www.marinespecies.org.
  • Finet, Y. (1991) The Marine Mollusks of the Galapagos Islands. In: Galápagos Marine Invertebrate. Taxonomy, Biogeography, and Evolution in Darwin's Islands. Plenum Press. New York and London, p. 253-280.
  • Finet, Y. (2001) The marine mollusks of the Galapagos Islands: a documented faunal list. Editions du Muséum d' Histoire naturelle, Genève, 237 pp.
  • Hickman, C.P. Jr. Finet, Y. (1999) A Field Guide to the Marine Molluscs of Galápagos. Sugar Spring Press, Lexington, Virginia, 150 pp.
  • Kaiser, K.L. (1997) The recent molluscan marine fauna of the Islas Galápagos /. In The recent molluscan marine fauna of the Islas Galápagos. Kaiser, K. L. (1997). The recent molluscan marine fauna of the Islas Galápagos /. In The recent molluscan marine fauna of the Islas Galápagos / (p. 76). https://doi.org/10.5962/bhl.title.129924.
  • Keen, A.M. (1958) Sea Shells of Tropical West America. Stanford University Press, Palo Alto, 1st edition, 624 pp.

You are welcome to download and use the information found in this page, acknowledging its source.

This page should be cited as follows:

"Galapagos Species Database, Tonicia arnheimi", dataZone. Charles Darwin Foundation, https://datazone.darwinfoundation.org/en/checklist/?species=8758. Accessed 30 October 2026.