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Boavus
Taxonomy
Boavus was named by Marsh (1871).
It was assigned to Boinae by Hecht (1959) and Rage (1984); to Boidae by Hay (1902), Hay (1930), Brattstrom (1955) and Carroll (1988); and to Booidea by Onary et al. (2021).
It was assigned to Boinae by Hecht (1959) and Rage (1984); to Boidae by Hay (1902), Hay (1930), Brattstrom (1955) and Carroll (1988); and to Booidea by Onary et al. (2021).
Synonymy list
| Year | Name and author |
|---|---|
| 1871 | Boavus Marsh p. 322 |
| 1902 | Boavus Hay p. 479 |
| 1930 | Boavus Hay p. 268 |
| 1955 | Boavus Brattstrom p. 148 |
| 1959 | Boavus Hecht p. 143 |
| 1984 | Boavus Rage p. 15 |
| 1988 | Boavus Carroll |
| 2021 | Boavus Onary et al. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
G. †Boavus Marsh 1871
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†Boavus brevis Marsh 1871
†Boavus idelmani Gilmore 1938
†Boavus occidentalis Marsh 1871
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Invalid names: Boavus affinis Brattstrom 1955 [synonym], Boavus agilis Marsh 1871 [synonym], Protagras lacustris Cope 1871 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| S. Onary et al. 2021 | Small (~1 m) to medium-sized (~2 m) booid snakes distinguished from all other ophidians in possessing the following combination of vertebral features: vertebrae characterized by thick zygosphene (i.e. about as tall as neural canal); well-developed neural spine; no paracotylar foramina; total absence of prezygapophyseal accessory processes; and paradiapophyses reaching the same level as the pre-zygapophyseal articular facet tips in the posterior trunkregion. Cranial features found in B. occidentalis and B.idelmani (but unconfirmed in B. brevis) include:robustly built lower jaw containing at least 15–17 tooth positions in the dentary; conical teeth decreasing in size posteriorly; single mental foramen positioned close to the anterior end of the dentary (below third to fourth tooth positions in B. occidentalis; below fifth tooth position in B. idelmani); broad splenial of length at least half the size of the dentary anteroposteriorly; the presence of an anterior mylohyoid foramen; compound bone with well-developed ventrolateral crest for attachment of the m. adductor externus superficialis; and quadrate |