Haplophrentis Information & Haplophrentis Links at HealthHaven.com

Haplophrentis; Fossil range: 530–501 Ma PreЄ Є O S D C P T J K Pg N Cambrian
Scientific classification
Kingdom:	Animalia;
Phylum:	uncertain, possibly Mollusca;
Class:	†Hyolitha;
Order:	Hyolithida;
Genus:	Haplophrentis;

Haplophrentis was a tiny shelled mollusk which lived in the Cambrian Period. Its shell was long and conical, with the open end protected by an operculum, from which two fleshy arms called helens protruded at the sides. These arms probably acted as stabilisers, or were used for locomotion, rowing the animal across undersea mudflats.

Specimens of Haplophrentis have been found in the gut of the predator Ottoia.

Haplophrentis ranged in length between 2-6 mm. It is a genus of hyolith, an extinct class of molluscs.

[edit] References

^ ^a ^b The Paleobiology Database Haplophrentis page
^ Wotte, T. 2006. "New Middle Cambrian mollucs from the Láncara Formation of the Cantabrian Mountains (north-western Spain)". Revista Española de Paleontología 21(2):145-158

The Smithsonian Institution's page on the animal

This prehistoric mollusc article is a stub. You can help Wikipedia by expanding it.

This invertebrate-related article is a stub. You can help Wikipedia by expanding it.

[TPBDB-0] The Paleobiology Database Haplophrentis page

[Wotte2006-1] Wotte, T. 2006. "New Middle Cambrian mollucs from the Láncara Formation of the Cantabrian Mountains (north-western Spain)". Revista Española de Paleontología 21(2):145-158

[1]

[2]