Eyrena
No picture of Eyrena was found. Wikidata and iDigBio were searched and had none. Wikipedia and 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 Eyrena, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- MytilidaePBDB
- Diet
- suspension feederPBDB, for Mytilidae
- Life habit
- epifaunalPBDB, for Mytilidae
- Motility
- stationary, attachedPBDB, for Mytilidae
- Vision
- blindPBDB, for Bivalvia
- Environment
- lagoonal,coastal,inner shelf,outer shelf,oceanic,brackish,freshwaterPBDB, for Mytilidae
Time the record covers
At most 21 million years on record.
Every occurrence read is dated to somewhere between 121.4 Mya and 100.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
9 occurrences of Eyrena on record, most of them in the Early 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
9 occurrences- Early 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
2 formations
- Bejah Formation2
- Chaqiela Formation · Kangpa Group1
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The named rock units Eyrena has been recovered from, largest first. Drawn where the rock is now, not where it formed. 6 occurrences have no formation on record, which is common for older literature.
Eyrena and its relatives
Early CretaceousWhere Eyrena and its relatives were recorded in the Early Cretaceous.
Found in the same rock
56 taxa- Bivalvia4 sites
- Camptonectes4 sites
- Maccoyella4 sites
- Inoceramus3 sites
- Iotrigonia3 sites
- Rotularia3 sites
- Aphrodina2 sites
- Maccoyella reflecta2 sites
- Orbirhynchia2 sites
- Palaeomoera2 sites
- Patella2 sites
- Pleuromya2 sites
- Pseudolimea2 sites
- Trigonia2 sites
- Yoldia freytagi2 sites
- Acesta1 site
- Anisomyon1 site
- Arca1 site
- Astarte1 site
- Astarte (Astarte)1 site
- Astartemya1 site
- Astartoides1 site
- Astartoides gamgbaensis1 site
- Brachidontes1 site
The Paleobiology Database records 9 sites for Eyrena, 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
3 references- Cretaceous stratigraphy of Raukumara Peninsula5
- Lower Cretaceous Mollusca of the Great Artesian Basin Type in the Gibson Desert, Central Western Australia3
- Cretaceous bivalves of Kangpa Group, South Xizang, China and their biogeography1
Each of the 9 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 the Paleobiology Database's own record for the work.
Media and terms
Media content0
No picture of Eyrena was found. Wikidata and iDigBio were searched and had none.
Wikipedia and 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 Eyrena, or no answer at all. This entry cannot say which.
No 3D scan of Eyrena 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itMytilidae through timeFormations of the Early CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Ludbrook 1966