Roudairia

via iDigBio · CC0 · via iDigBio. 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
- ArcticidaePBDB
- Diet
- suspension feederPBDB, for Venerida
- Life habit
- infaunalPBDB, for Venerida
- Motility
- facultatively mobilePBDB, for Venerida
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 17 million years on record.
The record covers at least 89.8 Mya to 72.2 Mya. No occurrence read is dated outside 93.9 Mya to 66 Mya.
10 occurrences of Roudairia 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
10 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
6 formations
- San Francisquito Formation3
- Cajamarca Formation1
- Jagüel Formation · Malargüe Group1
- Roca Formation · Malargüe Group1
- Chonta Formation1
- El Piojo Formation1
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The named rock units Roudairia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Roudairia and its relatives
Late CretaceousWhere Roudairia and its relatives were recorded in the Late Cretaceous.
Found in the same rock
88 taxa- Camptonectes tutorae2 sites
- Cardium2 sites
- Echinoida2 sites
- Hemiaster2 sites
- Mesocallista2 sites
- Pseudolimea2 sites
- Turritella webbi2 sites
- Amphidonte mendozana1 site
- Aphrodina (Tikia)1 site
- Austrotrigonia pampeana1 site
- Barroisiceras1 site
- Bivalvia1 site
- Brachidontes1 site
- Brachysphingus gibbosus1 site
- Buchiceras bilobatum1 site
- Campanile1 site
- Cardium riogramamense1 site
- Cinulia pauper1 site
- Coelopleurus castroi1 site
- Coilopoceras1 site
- Corbula lyra1 site
- Cryptochorda1 site
- Cryptorhytis1 site
- Cucullaea (Idonearca) maresi1 site
The Paleobiology Database records 10 sites for Roudairia, 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- The Tethyan bivalve Roudairia from the Upper Cretaceous of California4
- Molluscs at the K/Pg boundary in Argentina: Extinction and recovery patterns. unpublished Ph.D. thesis2
- Cretaceous system in northern Peru1
- Geological reconnaissance of the Contamana region, Peru1
- Upper Cretaceous ammonites from Haiti1
- O Cretaceo da Parahyba do Norte1
Each of the 10 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 content1

Picture of Roudairia
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Roudairia 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itArcticidae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Munier-Chalmas 1881