Parasaniwa

Parasaniwa is an extinct genus of necrosaurid lizard from the Late Cretaceous of the western United States.

Parasaniwa

Bennett, Geb & Scott Bailey · CC0 · via GBIF. 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
PlatynotaPBDB
Diet
carnivorePBDB
Life habit
ground dwellingPBDB
Motility
actively mobilePBDB, for Osteichthyes
Environment
terrestrialPBDB

Time the record covers

At most 18 million years on record.

Every occurrence read is dated to somewhere between 83.6 Mya and 66 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 28 of 28 occurrencesLate CretaceousPaleocene — about 0 of 28 occurrences84–83 Mya — about 0.1 occurrences83–83 Mya — about 0.6 occurrences83–82 Mya — about 0.6 occurrences82–82 Mya — about 0.6 occurrences82–81 Mya — about 0.6 occurrences81–80 Mya — about 0.6 occurrences80–80 Mya — about 0.6 occurrences80–79 Mya — about 0.6 occurrences79–79 Mya — about 0.6 occurrences79–78 Mya — about 0.6 occurrences78–77 Mya — about 0.6 occurrences77–77 Mya — about 0.6 occurrences77–76 Mya — about 0.6 occurrences76–75 Mya — about 0.6 occurrences75–75 Mya — about 0.6 occurrences75–74 Mya — about 0.6 occurrences74–74 Mya — about 0.6 occurrences74–73 Mya — about 0.6 occurrences73–72 Mya — about 0.6 occurrences72–72 Mya — about 1 occurrence72–71 Mya — about 2 occurrences71–70 Mya — about 2 occurrences70–70 Mya — about 2 occurrences70–69 Mya — about 2 occurrences69–69 Mya — about 2 occurrences69–68 Mya — about 2 occurrences68–67 Mya — about 2 occurrences67–67 Mya — about 2 occurrences67–66 Mya — about 2 occurrences66–66 Mya — about 0.3 occurrences84.1 Mya65.5 Mya

28 occurrences of Parasaniwa on record, most of them in the Late Cretaceous. 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

28 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

11 formations

Hell Creek — 47.80°N, 106.10°WHell Creek — 47.55°N, 107.10°WHell Creek — 47.52°N, 107.18°WHell Creek — 47.07°N, 106.92°WHell Creek — 45.50°N, 103.10°WHell Creek — 45.64°N, 103.49°WLance — 43.12°N, 104.64°WLance — 43.15°N, 104.57°WLance — 43.17°N, 104.53°WLance — 43.13°N, 104.49°WScollard — 52.33°N, 113.12°WScollard — 51.91°N, 112.97°WOldman — 50.70°N, 111.50°WOldman — 49.30°N, 110.60°WDinosaur Park — 50.41°N, 110.29°WDinosaur Park — 49.96°N, 110.27°WCerro del Pueblo — 25.54°N, 101.36°WJudith River — 47.81°N, 109.59°WWahweap — 37.59°N, 112.88°WFrenchman — 49.30°N, 108.40°WAguja — 29.32°N, 103.52°WKaiparowits — 37.44°N, 111.80°W

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The named rock units Parasaniwa has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Parasaniwa and its relatives

Late Cretaceous

Where Parasaniwa and its relatives were recorded in the Late Cretaceous.

Found in the same rock

361 taxa

The Paleobiology Database records 25 sites for Parasaniwa, 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

15 references

Each of the 28 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. 3 further references are not listed. 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 Parasaniwa

Source
GBIF
Credit
Bennett, Geb & Scott Bailey
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Parasaniwa was found in MorphoSource and Sketchfab.

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 itPlatynota through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Gilmore 1928