Atreta
Orbigny (d') · CC BY 4.0 · 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
- DimyidaePBDB
- Diet
- suspension feederPBDB, for Dimyidae
- Life habit
- epifaunalPBDB, for Dimyidae
- Motility
- stationary, attachedPBDB, for Dimyidae
- Vision
- blindPBDB, for Bivalvia
- Environment
- marinePBDB, for Pectinida
Time the record covers
At least 231 million years on record.
The record covers at least 237 Mya to 5.333 Mya. No occurrence read is dated outside 247 Mya to 3.6 Mya.
258 occurrences of Atreta on record, most of them in the Late Triassic. 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
258 occurrences- Middle Triassicunder 1%
- Late Triassic55%
- Early Jurassic6%
- Middle Jurassic3%
- Late Jurassic2%
- Early Cretaceous1%
- Late Cretaceous29%
- Paleoceneunder 1%
- Eoceneunder 1%
- Miocene1%
- Plioceneunder 1%
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
57 formations
- Kossen Formation51
- Koessen Formation32
- Prairie Bluff Formation · Selma Group25
- Nayband Formation6
- Chari Formation5
- Calcare di Zu Formation5
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The named rock units Atreta has been recovered from, largest first. Drawn where the rock is now, not where it formed. 33 further formations hold fewer occurrences each and are not listed. 56 occurrences have no formation on record, which is common for older literature.
Atreta and its relatives
Late TriassicWhere Atreta and its relatives were recorded in the Late Triassic.
Found in the same rock
2,415 taxa- Spondylus36 sites
- Serpula35 sites
- Pycnodonte vesicularis34 sites
- Chlamys31 sites
- Pinna25 sites
- Bryozoa24 sites
- Exogyra (Exogyra) costata24 sites
- Nuculana24 sites
- Echinoidea22 sites
- Cardium21 sites
- Idonearca capax21 sites
- Modiolus21 sites
- Anomia argentaria20 sites
- Arca19 sites
- Rhaetavicula contorta19 sites
- Crenella serica18 sites
- Lima18 sites
- Cubitostrea tecticosta17 sites
- Plagiostoma17 sites
- Plagiostoma punctatum17 sites
- Pseudolimea17 sites
- Pseudolimea reticulata17 sites
- Turritella17 sites
- Bellifusus16 sites
The Paleobiology Database records 192 sites for Atreta, 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
62 references- Stratigraphie und Biofacies der Koessener Formation (Obertrias, Nordliche Kalkalpen)64
- Upper Cretaceous (Maestrichtian) Mollusca from the Haustator bilira Assemblage Zone in the East Gulf Coastal Plain24
- Unpublished data on Cretaceous-Paleocene molluscan assemblages21
- Brachiopod and bivalve ecology in the Late Triassic (Alps, Austria): onshore-offshore replacements caused by variations in sediment and nutrient supply13
- Die Fauna der sogenannten Cardita- und Raibler-Schichten in den Nordtiroler und bayerischen Alpen.8
- Palökologie benthischer Faunen aus dem Unter-Toarc SW-Europas7
- Lamellibranchiaten aus der Trias des Bakonyer Waldes [Bivalves from the Triassic of the Bakony Forest]7
- Géologie et paléontologie des couches à Avicula contorta en Lombardie7
- Linking taphonomy to community-level abundance: insights into compositional fidelity of the Upper Triassic shell concentrations (Eastern Alps)6
- Taxonomy and phylogeny of cementing Triassic bivalves (Families Prospondylidae, Plicatulidae, Dimyidae and Ostreidae)6
- Paleoecological succession of Norian (Late Triassic) benthic fauna in eastern Panthalassa (Luning and Gabbs Formations, west-central Nevada)5
- Unpublished data from Kachchh5
Each of the 258 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. 50 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 Atreta
- Source
- GBIF
- Credit
- Orbigny (d')
- Licence
- CC BY 4.0
- 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 itDimyidae through timeFormations of the Late TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Etallon 1862