Richardoestesia

Richardoestesia is a morphogenus of theropod dinosaur teeth, originally described from the Late Cretaceous of what is now Canada, the United States, and possibly also Uzbekistan. It currently contains two species, R. gilmorei and R. isosceles, and a possible third, R. asiatica, although it has been classified in its own genus Asiamericana. It has been used as a morphotaxon to describe other theropod teeth widely displaced in time and space from the type species. If all teeth assigned to the genus are truly reflective of the animals biology and taxonomic state, it would have been one of the longest lasting dinosaur genera, perhaps also being the most widely distributed.

Richardoestesia

Derek W. Larson, Philip J. Currie · CC BY 2.5 · 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
DromaeosauridaePBDB
Diet
carnivorePBDB, for Dromaeosauridae
Life habit
ground dwellingPBDB, for Dromaeosauridae
Motility
actively mobilePBDB, for Theropoda
Environment
terrestrialPBDB, for Dromaeosauridae

Time the record covers

At least 77 million years on record.

The record covers at least 149.2 Mya to 72.2 Mya. No occurrence read is dated outside 154.8 Mya to 66 Mya.

Late Jurassic — about 3 of 239 occurrencesLate JurassicEarly Cretaceous — about 4 of 239 occurrencesEarly CretaceousLate Cretaceous — about 232 of 239 occurrencesLate CretaceousPaleocene — about 0 of 239 occurrences157–153 Mya — about 0.3 occurrences153–150 Mya — about 1 occurrence150–147 Mya — about 0.9 occurrences147–144 Mya — about 0.3 occurrences144–141 Mya — about 0.1 occurrences138–135 Mya — about 0.5 occurrences135–132 Mya — about 0.5 occurrences126–123 Mya — about 0.7 occurrences123–120 Mya — about 0.3 occurrences120–117 Mya — about 0.5 occurrences117–113 Mya — about 0.5 occurrences113–110 Mya — about 0.3 occurrences110–107 Mya — about 0.2 occurrences107–104 Mya — about 0.2 occurrences104–101 Mya — about 0.2 occurrences101–98 Mya — about 2 occurrences98–95 Mya — about 3 occurrences95–92 Mya — about 5 occurrences92–89 Mya — about 4 occurrences89–86 Mya — about 0.1 occurrences86–83 Mya — about 42 occurrences83–80 Mya — about 25 occurrences80–77 Mya — about 25 occurrences77–73 Mya — about 25 occurrences73–70 Mya — about 37 occurrences70–67 Mya — about 44 occurrences67–64 Mya — about 19 occurrences149.2 Mya72.2 Mya157 Mya64 Mya

239 occurrences of Richardoestesia 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

239 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

41 formations

Hell Creek — 45.95°N, 103.96°WHell Creek — 46.10°N, 103.30°WHell Creek — 45.98°N, 103.75°WHell Creek — 46.18°N, 103.84°WHell Creek — 46.38°N, 103.96°WHell Creek — 46.33°N, 103.90°WHell Creek — 46.46°N, 104.00°WHell Creek — 45.94°N, 103.95°WHell Creek — 47.68°N, 106.43°WHell Creek — 47.55°N, 107.12°WHell Creek — 47.52°N, 106.98°WHell Creek — 47.52°N, 106.40°WHell Creek — 47.65°N, 106.65°WHell Creek — 47.55°N, 107.25°WHell Creek — 47.52°N, 107.18°WHell Creek — 47.53°N, 106.92°WHell Creek — 47.07°N, 106.92°WHell Creek — 47.60°N, 106.28°WHell Creek — 47.73°N, 106.50°WHell Creek — 47.80°N, 106.10°WHell Creek — 47.65°N, 106.20°WHell Creek — 47.63°N, 106.20°WHell Creek — 47.61°N, 106.90°WHell Creek — 47.60°N, 107.00°WHell Creek — 47.57°N, 107.10°WHell Creek — 45.66°N, 105.08°WHell Creek — 45.00°N, 103.19°WMilk River — 49.10°N, 111.80°WDinosaur Park — 49.12°N, 110.47°WDinosaur Park — 50.73°N, 111.51°WDinosaur Park — 50.75°N, 111.51°WDinosaur Park — 50.75°N, 111.40°WDinosaur Park — 50.81°N, 111.58°WDinosaur Park — 50.78°N, 111.33°WDinosaur Park — 51.44°N, 110.39°WDinosaur Park — 50.73°N, 111.30°WDinosaur Park — 48.03°N, 110.24°WDinosaur Park — 49.96°N, 110.27°WOldman — 49.10°N, 110.94°WOldman — 49.08°N, 110.68°WOldman — 49.16°N, 110.72°WOldman — 50.75°N, 111.51°WOldman — 50.83°N, 111.32°WOldman — 50.64°N, 110.91°WOldman — 49.28°N, 112.20°WOldman — 49.28°N, 112.58°WAguja — 29.32°N, 103.52°WAguja — 29.20°N, 103.20°WAguja — 29.10°N, 103.17°WAguja — 29.23°N, 103.57°WLance — 43.49°N, 104.46°WLance — 43.18°N, 104.53°WLance — 43.13°N, 104.49°WLance — 43.23°N, 104.58°WLance — 43.12°N, 104.64°WBissekty — 42.12°N, 62.66°EBissekty — 41.29°N, 61.50°EHorseshoe Canyon — 51.54°N, 112.88°WHorseshoe Canyon — 52.00°N, 112.88°WHorseshoe Canyon — 55.46°N, 117.42°WHorseshoe Canyon — 51.47°N, 112.75°WLa Posa — 42.05°N, 0.22°WLa Posa — 42.53°N, 1.22°ELa Posa — 42.16°N, 0.96°ELa Posa — 42.27°N, 0.73°EFerris — 41.94°N, 106.88°WFerris — 41.80°N, 107.00°WKirtland — 36.50°N, 108.08°WKirtland — 36.29°N, 108.54°WKirtland — 36.31°N, 108.05°WKirtland — 36.51°N, 108.32°WJudith River — 46.47°N, 109.30°WJudith River — 46.46°N, 109.41°WJudith River — 46.10°N, 109.10°WJudith River — 46.42°N, 109.27°WCedar Mountain — 38.69°N, 111.26°WCedar Mountain — 38.64°N, 111.37°WCedar Mountain — 38.66°N, 111.24°WDensuș-Ciula — 45.63°N, 22.90°EDensuș-Ciula — 45.60°N, 22.85°EFruitland — 36.12°N, 107.78°WFruitland — 36.30°N, 108.20°WFruitland — 36.51°N, 108.32°WVitoria — 42.66°N, 2.63°WForemost — 49.13°N, 110.87°WUdurchukan — 49.08°N, 130.86°EMesaverde — 42.85°N, 107.28°WMesaverde — 44.12°N, 107.76°WPui Beds — 45.49°N, 23.09°EKhodzhakul — 40.10°N, 65.80°EWilliams Fork — 40.03°N, 108.85°WWilliams Fork — 39.93°N, 108.82°WEl Gallo — 30.05°N, 115.76°WIron Springs — 37.57°N, 113.43°WIron Springs — 37.90°N, 112.74°W

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The named rock units Richardoestesia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 17 further formations hold fewer occurrences each and are not listed. 3 occurrences have no formation on record, which is common for older literature.

Richardoestesia and its relatives

Late Cretaceous

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

Found in the same rock

1,048 taxa

The Paleobiology Database records 199 sites for Richardoestesia, 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

57 references

Each of the 239 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. 45 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 content2

Picture of Richardoestesia

Credit
Derek W. Larson, Philip J. Currie
Licence
CC BY 2.5
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial
Commercial use
the licence does not allow it

MorphoSource 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 itDromaeosauridae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Currie et al. 1990