Squatirhina

Squatirhina is a genus of rajiforms that lived in Late Cretaceous, whose fossils have been found in the Aguja and Pen Formations of Big Bend National Park, Texas, USA.

No picture of Squatirhina was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Squatirhina, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
RajiformesPBDB
Diet
carnivorePBDB, for Rajiformes
Life habit
nektobenthicPBDB, for Rajiformes
Motility
actively mobilePBDB, for Rajiformes

Time the record covers

At least 49 million years on record.

The record covers at least 121.4 Mya to 72.2 Mya. No occurrence read is dated outside 125.77 Mya to 66 Mya.

Early Cretaceous — about 15 of 69 occurrencesEarly CretaceousLate Cretaceous — about 54 of 69 occurrencesLate CretaceousPaleocene — about 0 of 69 occurrences127–125 Mya — about 0.2 occurrences125–123 Mya — about 0.5 occurrences123–121 Mya — about 1 occurrence121–119 Mya — about 1 occurrence119–117 Mya — about 0.3 occurrences117–115 Mya — about 0.3 occurrences115–112 Mya — about 0.4 occurrences112–110 Mya — about 0.7 occurrences110–108 Mya — about 3 occurrences108–106 Mya — about 3 occurrences106–104 Mya — about 2 occurrences104–102 Mya — about 2 occurrences102–100 Mya — about 2 occurrences100–98 Mya — about 3 occurrences98–96 Mya — about 3 occurrences96–94 Mya — about 3 occurrences94–92 Mya — about 1 occurrence92–90 Mya — about 1.0 occurrences90–88 Mya — about 0.5 occurrences88–86 Mya — about 1.0 occurrences86–83 Mya — about 6 occurrences83–81 Mya — about 5 occurrences81–79 Mya — about 5 occurrences79–77 Mya — about 5 occurrences77–75 Mya — about 5 occurrences75–73 Mya — about 5 occurrences73–71 Mya — about 4 occurrences71–69 Mya — about 2 occurrences69–67 Mya — about 2 occurrences67–65 Mya — about 1.0 occurrences121.4 Mya72.2 Mya127 Mya65 Mya

69 occurrences of Squatirhina 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

69 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

19 formations

Hunstanton — 54.15°N, 0.17°WHunstanton — 53.68°N, 0.50°WAguja — 29.10°N, 103.17°WFruitland — 36.49°N, 108.51°WFruitland — 36.27°N, 108.26°WNewhaven Chalk — 51.45°N, 1.36°WNewhaven Chalk — 51.53°N, 0.70°WNewhaven Chalk — 50.67°N, 1.10°WRybushka — 51.24°N, 44.99°ERybushka — 51.23°N, 45.10°ESpeeton Clay — 54.15°N, 0.17°WAguja — 28.94°N, 103.37°WHell Creek — 47.52°N, 106.40°WJudith River — 47.74°N, 108.96°WKirtland — 36.31°N, 108.05°WCulver Chalk — 50.85°N, 1.15°WHibernian Greensand — 54.95°N, 5.91°WAtherfield Clay — 51.23°N, 0.25°WHythe — 51.24°N, 0.10°WObourg — 50.47°N, 4.03°ETrivières Chalk — 50.47°N, 4.03°EMaastricht — 50.80°N, 5.68°EGlauconie de Lonzée — 50.55°N, 4.73°ETor — 55.32°N, 12.44°E

Loading coastlines…

The named rock units Squatirhina has been recovered from, largest first. Drawn where the rock is now, not where it formed. 36 occurrences have no formation on record, which is common for older literature.

Squatirhina and its relatives

Late Cretaceous

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

Found in the same rock

488 taxa

The Paleobiology Database records 68 sites for Squatirhina, 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

25 references

Each of the 69 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. 13 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 content0

No picture of Squatirhina was found. Wikipedia, Wikidata and iDigBio were searched and had none.

Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Squatirhina, or no answer at all. This entry cannot say which.

No 3D scan of Squatirhina was found in Sketchfab.

Smithsonian Open Access and MorphoSource were 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 itRajiformes through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Casier 1947