Heterodon nasicus

The western hognose snake is a species of snake in the family Colubridae. The species is endemic to North America. There are three subspecies that are recognized as being valid, including the nominotypical subspecies.

Heterodon nasicus

Uncredited · 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
Also called
western hognose snakePBDB
Sits inside
HeterodonPBDB
Diet
carnivorePBDB, for Heterodon
Life habit
ground dwellingPBDB, for Heterodon
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB, for Amniota

Time the record covers

At least 4.5 million years on record.

The record covers at least 4.7 Mya to 129 ka. No occurrence read is dated outside 9.4 Mya to 11.7 ka.

Miocene — about 1 of 12 occurrencesMiocenePliocene — about 1 of 12 occurrencesPliocenePleistocene — about 10 of 12 occurrencesPleistoceneHolocene — about 0 of 12 occurrences9.6–9.2 Mya — about 0.0 occurrences9.2–8.9 Mya — about 0.1 occurrences8.9–8.6 Mya — about 0.1 occurrences8.6–8.3 Mya — about 0.1 occurrences8.3–7.9 Mya — about 0.1 occurrences7.9–7.6 Mya — about 0.1 occurrences7.6–7.3 Mya — about 0.1 occurrences7.3–6.9 Mya — about 0.1 occurrences6.9–6.6 Mya — about 0.1 occurrences6.6–6.3 Mya — about 0.1 occurrences6.3–5.9 Mya — about 0.1 occurrences5.9–5.6 Mya — about 0.1 occurrences5.6–5.3 Mya — about 0.1 occurrences5.3–5.0 Mya — about 0.1 occurrences5.0–4.6 Mya — about 0.1 occurrences4.6–4.3 Mya — about 0.1 occurrences4.3–4.0 Mya — about 0.1 occurrences4.0–3.6 Mya — about 0.1 occurrences3.6–3.3 Mya — about 0.1 occurrences3.3–3.0 Mya — about 0.1 occurrences3.0–2.6 Mya — about 0.1 occurrences2.6–2.3 Mya — about 0.4 occurrences2.3–2.0 Mya — about 0.5 occurrences2.0–1.6 Mya — about 0.3 occurrences1.6–1.3 Mya — about 0.3 occurrences1.3–990 ka Mya — about 0.8 occurrences990 ka–660 ka Mya — about 2 occurrences660 ka–330 ka Mya — about 3 occurrences330 ka–0 Mya — about 4 occurrences4.7 Mya129 ka9.9 Mya0 Mya

12 occurrences of Heterodon nasicus 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

12 occurrences

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

5 formations

Alamosa — 37.37°N, 105.75°WKingsdown — 37.20°N, 100.30°WKingsdown — 37.04°N, 100.48°WBidahochi — 35.80°N, 110.10°WLong Pine — 42.38°N, 98.23°WCrooked Creek — 37.20°N, 100.30°W

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The named rock units Heterodon nasicus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Heterodon nasicus and its relatives

Pleistocene

Where Heterodon nasicus and its relatives were recorded in the Pleistocene.

Found in the same rock

214 taxa

The Paleobiology Database records 12 sites for Heterodon nasicus, 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

6 references

Each of the 12 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 content2

Picture of Heterodon nasicus

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Heterodon nasicus kennerlyi · UMMZ:Herps:49817

Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.

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 itHeterodon through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Baird and Girard 1852