Phenacocyclas

Not Phenacocyclas. This is Unio tumidus Philipsson, 1788, a relative.
-919270953 · 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
- LucinidaePBDB
- Diet
- chemosymbioticPBDB, for Lucinidae
- Life habit
- deep infaunalPBDB, for Lucinidae
- Motility
- facultatively mobilePBDB, for Lucinidae
- Vision
- blindPBDB, for Bivalvia
Time the record covers
At least 5.6 million years on record.
The record covers at least 387.95 Mya to 382.31 Mya. No occurrence read is dated outside 393.47 Mya to 372.15 Mya.
5 occurrences of Phenacocyclas on record, most of them in the Devonian. 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
5 occurrences- Devonian100%
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
4 formations
- Dawson Bay Formation2
- Souris River Formation1
- Denay Limestone Formation · Nevada Group1
- Burdekin Formation · Fanning River Group1
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The named rock units Phenacocyclas has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Phenacocyclas and its relatives
DevonianWhere Phenacocyclas and its relatives were recorded in the Devonian.
Found in the same rock
57 taxa- Atrypa3 sites
- Emanuella3 sites
- Coenites2 sites
- Paracyclas proavia2 sites
- Proetus manitobensis2 sites
- Spinatrypa2 sites
- Agoniatites1 site
- Bellerophon nevadensis1 site
- Bellerophon pelops1 site
- Cabrieroceras crispiforme1 site
- Catazone nevadana1 site
- Chonetes1 site
- Chonetipustula concentrica1 site
- Conocardioidea1 site
- Conotoma aurora1 site
- Crurithyris calendae1 site
- Cypricardinia1 site
- Denayella housei1 site
- Echinocoelia denayensis1 site
- Edmondia1 site
- Eoangyomphalus klapperi1 site
- Grammatodon1 site
- Hypselentoma1 site
- Leptathyris index1 site
The Paleobiology Database records 5 sites for Phenacocyclas, 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- Fauna of the Manitoba Group, from Manitoba, Canada3
- Two bivalves from the Middle Devonian Burdekin formation, north Queensland1
- Lower Givetian brachiopods from Central Nevada1
Each of the 5 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 Unio tumidus Philipsson, 1788
- Source
- GBIF
- Credit
- -919270953
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Phenacocyclas 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 itLucinidae through timeFormations of the DevonianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. La Rocque 1950