Tryblidium

Tryblidium is a paleozoic genus of Ordovician and Silurian monoplacophorans.

The generic name comes from the Greek (τρυβλίον), which means patella.

Species
Species in the genus Tryblidium include:
 * Tryblidium acutum
 * Tryblidium arctica
 * Tryblidium erato
 * Tryblidium eubule
 * Tryblidium exserta
 * Tryblidium hyrie
 * Tryblidium modestum
 * Tryblidium niobe
 * Tryblidium nycteis
 * Tryblidium ovale
 * Tryblidium ovatum
 * Tryblidium pileolum
 * Tryblidium reticulatum
 * Tryblidium rugosum
 * Tryblidium simplex
 * Tryblidium thorsteinssoni