Ursirivus
No picture of Ursirivus 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 Ursirivus, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- CorbulinaePBDB
- Diet
- suspension feederPBDB
- Life habit
- infaunalPBDB
- Motility
- stationaryPBDB
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 45 million years on record.
The record covers at least 93.9 Mya to 48.07 Mya. No occurrence read is dated outside 100.5 Mya to 41.03 Mya.
39 occurrences of Ursirivus 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
39 occurrencesThese 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
2 formations
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The named rock units Ursirivus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Ursirivus and its relatives
Late CretaceousWhere Ursirivus and its relatives were recorded in the Late Cretaceous.
Found in the same rock
97 taxa- Sanoarca grandis21 sites
- Brachidontes20 sites
- Caryocorbula20 sites
- Voysa17 sites
- Pyrgulifera16 sites
- Fulpia15 sites
- Anomia13 sites
- Ostrea soleniscus13 sites
- Protarca11 sites
- Solyma11 sites
- Anatimya9 sites
- Cuspidaria9 sites
- Geltena9 sites
- Senis8 sites
- Pseudoptera7 sites
- Cliona6 sites
- Cymbophora6 sites
- Priscomactra6 sites
- Specus6 sites
- Macrocerithium tramitense5 sites
- Natica5 sites
- Pharodina5 sites
- Phelopteria dalli5 sites
- Dentonia leveretti4 sites
The Paleobiology Database records 31 sites for Ursirivus, 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
2 references- Larger invertebrate fossils of the Woodbine formation (Cenomanian) of Texas38
- Middle Eocene Mollusca from the basal beds of Gebel Qarara (Upper Egypt), with remarks on the depositional environment of these beds1
Each of the 39 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content0
No picture of Ursirivus 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 Ursirivus, or no answer at all. This entry cannot say which.
No 3D scan of Ursirivus 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
Everything alive alongside itCorbulinae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Vokes 1945