Bakevelliidae
Bakevelliidae is an extinct family of prehistoric bivalves that lived from the Late Mississippian until the Middle Eocene. Bakevelliidae species are found worldwide, excluding Antarctica. Living a stationary life attached to substrate in marine and brackish environments, they formed shells of an aragonite composition with a low amount of magnesium calcite. The family was named by William King in 1850. At least one genus in the family, Hoernesia, has a notably twisted commissure join.

BerndH · CC BY-SA 3.0 · via Wikipedia/Commons. 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
- PterioideaPBDB
- Diet
- suspension feederPBDB, for Pterioidea
- Life habit
- epifaunalPBDB, for Pterioidea
- Motility
- stationary, attached, epibiontPBDB, for Pterioidea
- Vision
- blindPBDB, for Bivalvia
- Environment
- marine,brackishPBDB, for Ostreida
Time the record covers
At least 282 million years on record.
The record covers at least 323.4 Mya to 41.03 Mya. No occurrence read is dated outside 330.3 Mya to 37.71 Mya.
2,688 occurrences of Bakevelliidae on record, most of them in the Early 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
2,688 occurrences- Carboniferousunder 1%
- Permian15%
- Early Triassic19%
- Middle Triassic14%
- Late Triassic14%
- Early Jurassic10%
- Middle Jurassic7%
- Late Jurassic6%
- Early Cretaceous6%
- Late Cretaceous8%
- Paleoceneunder 1%
- Eoceneunder 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
463 formations
- Kossen Formation72
- Ford Formation70
- Moenkopi Formation69
- Werfen Formation · Costabella Group60
- Daye Formation56
- Tataouine Formation51
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The named rock units Bakevelliidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 439 further formations hold fewer occurrences each and are not listed. 627 occurrences have no formation on record, which is common for older literature.
Bakevelliidae and its relatives
Early TriassicWhere Bakevelliidae and its relatives were recorded in the Early Triassic.
Found in the same rock
1,624 taxa- Serpula53 sites
- Nanogyra (Nanogyra) nana51 sites
- Cymbophora48 sites
- Gervillia46 sites
- Nuculana43 sites
- Modiolus42 sites
- Gervillella aviculoides37 sites
- Anomia argentaria35 sites
- Cyprimeria35 sites
- Radulopecten fibrosus35 sites
- Pleuromya uniformis34 sites
- Corbula33 sites
- Syncyclonema33 sites
- Veniella conradi33 sites
- Granocardium32 sites
- Panopea32 sites
- Protocardia32 sites
- Linearis31 sites
- Astarte30 sites
- Gervilliopsis ensiformis29 sites
- Ostrea29 sites
- Pholadomya29 sites
- Cucullaea28 sites
- Legumen ellipticum28 sites
The Paleobiology Database records at least 1,565 sites for Bakevelliidae, and this reads 240 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
477 references- Stratigraphische und Paläogeographische Stellung der Khenjan-Serie und deren Pelecypoden (Trias, Afgahnistan)82
- Stratigraphie und Biofacies der Koessener Formation (Obertrias, Nordliche Kalkalpen)76
- A systematic survey of the Mesozoic Bivalvia from Japan69
- Unpublished data from Kachchh62
- Unpublished data62
- Palokologie und zeitliche Verbreitung benthischer Faunengemeinschaften im Unterjura von Chile54
- Palökologie benthischer Faunengemeinschaften und Taxonomie der Bivalven im Jura von Südtunesien52
- Early Jurassic Bivalvia of western Canada. Part I. Subclasses Palaeotaxodonta, Pteriomorpha, and Isofilibranchia50
- Persistent Environmental Stress Delayed the Recovery of Marine Communities in the Aftermath of the Latest Permian Mass Extinction49
- Bivalves from the Changhsingian (upper Permian) Bellerophon Formation of the Dolomites (Italy): ancestors of Lower Triassic post-extinction benthic communities37
- Unpublished data on Cretaceous-Paleocene molluscan assemblages33
- Faunal diversity, heterogeneity and body size in the Early Triassic: testing post-extinction paradigms in the Virgin Limestone of Utah, USA31
Each of the 2,688 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. 465 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 Bakevelliidae
- Source
- Wikipedia/Commons
- Credit
- BerndH
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
The description on this site
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itPterioidea through timeFormations of the Early TriassicThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. King 1850