''Boavus'' is an extinct genus of

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known primarily from Eocene-aged strata of North America. At least three species (''B. occidentalis, B. idelmani'', and possibly ''B. agilis'') are known from the Middle Eocene

Green River Green River may refer to: Rivers Canada *Green River (British Columbia), a tributary of the Lillooet River *Green River, a tributary of the Saint John River, also known by its French name of Rivière Verte *Green River (Ontario), a tributary of ...

lagerstätte in Wyoming, two species from Eocene strata of

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(''B. occidentalis'' again, ''B. brevis''), and at least one species is known from the middle to late Eocene-aged Sespe Formation of California (''B. affinis''). ''Boavus'' was a small snake measuring between long.

Post-Eocene specimens

Three vertebrae very similar in form, if not identical to those of ''B. occidentalis'' were found in early

Oligocene The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the ...

-aged strata of South Dakota. Remains of what may be ''B. affinis'' are found in Late Miocene (Early Barstovian-aged) strata of Trinity River in Texas.

References

Eocene snakes Boinae Eocene reptiles of North America Taxa named by Othniel Charles Marsh Fossil taxa described in 1871 {{snake-stub