Aclistomycter

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title: "Aclistomycter" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["oreodonts", "eocene-artiodactyla", "eocene-mammals-of-north-america", "prehistoric-artiodactyla-genera"] description: "Extinct genus of mammals" topic_path: "general/oreodonts" source: "https://en.wikipedia.org/wiki/Aclistomycter" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Extinct genus of mammals ::

| image = | image_caption= | fossil_range = Late Eocene | taxon = Aclistomycter | authority = Wilson 1971 | parent_authority = Lander 1998 | subdivision_ranks = Species | subdivision =

• Aclistomycter middletoni Wilson 1971 |

Aclistomycter is an extinct genus of oreodont. It lived during the early Chadronian subepoch 37.2—33.9 mya, existing for approximately . from the Chambers Tuff Formation near Adobe Springs in Presidio County, Texas.

Aclistomycter was a very small herbivorous artiodactyl with a short face, small, but tusk-like canine teeth.

Diagnosis

The type specimen consists of a skull and jaws.

Generic characters assigned by Wilson (1970):

• Medium small merycoidodontid with very large and deep, probably perforated, antorbital fossae.
• Brachycephalic.
• Posterior part of skull extended.
• Molar teeth with thick enamel and deep fossettes.
• Posterior base of zygomatic processes wide, making the skull broad posteriorly.
• Bullae thought to be inflated (though the bullae are not exposed in the figures of the type specimen illustrated by Wilson).

Resources

References

1. [https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=42489 ''Aclistomycter'' at fossilworks]

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