Richardoestesia isosceles
Bennett, Geb · 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
- RichardoestesiaPBDB
- 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 21 million years on record.
The record covers at least 93.9 Mya to 72.2 Mya. No occurrence read is dated outside 100.5 Mya to 66 Mya.
70 occurrences of Richardoestesia isosceles 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
70 occurrences- Late Cretaceous100%
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 Formation · Montana Group28
- Milk River Formation17
- Aguja Formation8
- Dinosaur Park Formation · Belly River Group5
- Oldman Formation · Belly River Group4
- Lance Formation2
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The named rock units Richardoestesia isosceles has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Richardoestesia isosceles and its relatives
Late CretaceousWhere Richardoestesia isosceles and its relatives were recorded in the Late Cretaceous.
Found in the same rock
385 taxa- Ceratopsidae30 sites
- Trionychidae28 sites
- Paronychodon27 sites
- Lepisosteus occidentalis25 sites
- Brachychampsa montana23 sites
- Champsosaurus23 sites
- Myledaphus bipartitus22 sites
- Scapherpeton tectum22 sites
- Borealosuchus sternbergii21 sites
- Chelydridae19 sites
- Cyclurus fragosus19 sites
- Lonchidion selachos18 sites
- Opisthotriton kayi18 sites
- Baenidae17 sites
- Hadrosaurinae17 sites
- Adocus16 sites
- Aves16 sites
- Richardoestesia gilmorei16 sites
- Saurornitholestinae16 sites
- Tyrannosauridae16 sites
- Compsemys victa15 sites
- Lepidosauria15 sites
- Tyrannosaurus rex15 sites
- Belonostomus longirostris14 sites
The Paleobiology Database records 61 sites for Richardoestesia isosceles, 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
16 references- Vertebrate biostratigraphy of the Hell Creek Formation in southwestern North Dakota and northwestern South Dakota19
- Multivariate analyses of small theropod dinosaur teeth and implications for paleoecological turnover through time11
- Small theropod teeth from the Late Cretaceous of the San Juan Basin, northwestern New Mexico and their implications for understanding latest Cretaceous dinosaur evolution9
- Diversity and variation of theropod dinosaur teeth from the uppermost Santonian Milk River Formation (Upper Cretaceous), Alberta: a quantitative method supporting identification of the oldest dinosaur tooth assemblage in Canada9
- Diversity of latest Cretaceous (late Maastrichtian) small theropods and birds: teeth from the Lance and Hell Creek formations, USA5
- Theropod teeth from the Upper Cretaceous (Campanian-Maastrichtian), Big Bed National Park, Texas4
- Comparative taphonomy and paleoecological reconstruction of two microvertebrate accumulations from the Late Cretaceous Hell Creek Formation (Maastrichtian), eastern Montana2
- The nonmammalian vertebrate microfossil assemblages of the Mesaverde Formation (Upper Cretaceous, Campanian) of the Wind River and Bighorn Basins, Wyoming2
- Late Campanian southern dinosaurs, Aguja Formation, Big Bend, Texas2
- Vertebrates of the Iron Springs Formation, Upper Cretaceous, southwestern Utah1
- Preliminary report on the mammals form Lane's Little Jaw Site Quarry: a latest Cretaceous (earliest Puercan?) local fauna, Hell Creek Formation, southeastern Montana1
- Revised identification of a reported Iguanodon-grade ornithopod tooth from the Scollard Formation, Alberta, Canada1
Each of the 70 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. 4 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 Richardoestesia isosceles
- Source
- GBIF
- Credit
- Bennett, Geb
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itRichardoestesia through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Sankey 2001