Boa constrictor
The boa constrictor, also known as the common boa, is a species of large, non-venomous, heavy-bodied snake that is frequently kept and bred in captivity. The boa constrictor is a member of the family Boidae. The species is native to tropical South America. A staple of private collections and public displays, its color pattern is highly variable yet distinctive. Four subspecies are recognized.

Charles J. Sharp · CC BY-SA 4.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- BoaPBDB
- Diet
- carnivorePBDB, for Boinae
- Life habit
- scansorialPBDB, for Boinae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- freshwater,terrestrialPBDB, for Boinae
Time the record covers
At least 16 million years on record.
The record covers at least 16.3 Mya to 11.7 ka. No occurrence read is dated outside 18.5 Mya to 0 Mya.
6 occurrences of Boa constrictor on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
6 occurrences- Miocene33%
- Pliocene6%
- Pleistocene44%
- Holocene17%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
3 formations
Loading coastlines…
The named rock units Boa constrictor has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Boa constrictor and its relatives
PleistoceneWhere Boa constrictor and its relatives were recorded in the Pleistocene.
Found in the same rock
133 taxa- Oryzomyini2 sites
- Alligator olseni1 site
- Amazona1 site
- Ameiva ameiva1 site
- Amphicyon longiramus1 site
- Anchitherium clarencei1 site
- Anhinga subvolans1 site
- Anilioides minuatus1 site
- Archaeohippus blackbergi1 site
- Artibeus1 site
- Artibeus (Artibeus) obscurus1 site
- Boreortalis laesslei1 site
- Bothrops1 site
- Bufo praevius1 site
- Buteo1 site
- Calamagras floridanus1 site
- Calomys expulsus1 site
- Calomys tener1 site
- Capitonidae1 site
- Carollia1 site
- Chelonoidis1 site
- Chelonoidis lutzae1 site
- Chiroptera1 site
- Colubroidae indet.1 site
The Paleobiology Database records 4 sites for Boa constrictor, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
5 references- Fossil snakes and lizards from the Lower Miocene of Florida2
- The northernmost South American fossil record of Boa constrictor (Boidae, Boinae) from the Plio–Pleistocene of El Breal de Orocual (Venezuela)1
- A new record of a Scelidotheriine ground sloth (Xenarthra, Mylodontidae) from Central Brazil: Quaternary cave stratigraphy, taxonomy and stable isotopes1
- First Record of Boa constrictor (Serpentes, Boidae) in the Quaternary of South America1
- Fossil vertebrates from Antigua, Lesser Antilles: evidence for late Holocene human-caused extinctions in the West Indies1
Each of the 6 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content1
Picture of Boa constrictor
- Source
- Wikipedia/Commons
- Credit
- Charles J. Sharp
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No repository was searched for a 3D scan: the genus name is too short to search on without matching most of the record.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itBoa through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Linnaeus 1758