heterodonts

Noun

heterodont (plural heterodonts)

1. A heterodont animal.
   • [A]mongst heterodonts there are several Rodents which have no deciduous teeth, e.g., the rat; […] Among Marsupials, which are true heterodonts, there is only one milk molar on each side in each jaw; […]1876, Charles S[issmore] Tomes, “The Teeth of Mammals”, in A Manual of Dental Anatomy, Human and Comparative, London: J[ohn] & A[ugustus] Churchill, […], pages 276–277
   1. A heterodont bivalve.
      • Ordovician actinodontoids are probably ancestral to the heterodonts, unionaceans, and trigoniaceans.1971, Robert A[llen] Cadigan, “Moenkopi Formation and Related Strata”, in Robert A. Cadigan, J. H. Stewart, Petrology of the Triassic Moenkopi Formation and Related Strata in the Colorado Plateau...
2. A snake of the genus Heterodon which is native to North America.
   • The second suborder (Macrosformes) corresponds with the Heteroderms of M. André Marie Constant Duméril. These are divided into seven families: […] 4. the Heterodonts, (Dendrophis, Coronella, &c.); […]1841, “REPTILES”, in [George Long], editor, The Penny Cyclopædia of the Society for the Diffusion of Useful Knowledge, volumes XIX (Primaticcio–Richardson), London: Charles Knight and Co., […]...

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