It is the Spanishization of microdontus or microdonthum. It means very small or tiny teeth. This term can serve as an epithet in many animals that have that characteristic (they may be fish or reptiles). It can also be used in botany as an epithet in plants that have a calyx of short or small teeth.
Microdont : 1 : Genus of selaginaceous plants formed by some frutic species of the Cape of Good Hope. -2 : Genus of fossil lamelibranchian molluscs whose species abound spread from the devoic terrain to the carboniferous . -3 : Genus of fossil ganoid fish whose remains are found in the Jurassic . -4 : Gender of stgocephalic amphibians, of the family of microsaurians whose remains are found in the carboniferous . -5 : Genus of nocturnal lepidoptera insects whose two species live in southern Russia. -6 : Gender of insects diptera of the family of syrfids, of domed thorax, rounded and expanded abdomen in the center, sturdy legs and wings shorter than the abdomen that extend during rest and whose larvae live under the bark of some trees and in anthills.
