Bythicheilus

Jamison, Paul · 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
- AlokistocaridaePBDB
- Diet
- carnivorePBDB, for Trilobita
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB, for Alokistocaridae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At most 4.4 million years on record.
Every occurrence read is dated to somewhere between 509.7 Mya and 505.3 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
9 occurrences of Bythicheilus on record, most of them in the Cambrian. 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- Cambrian100%
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
3 formations
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The named rock units Bythicheilus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Bythicheilus and its relatives
CambrianWhere Bythicheilus and its relatives were recorded in the Cambrian.
Found in the same rock
91 taxa- Zacanthoides4 sites
- Amecephalus idahoense3 sites
- Amecephalus laticaudum3 sites
- Athabaskia bithus3 sites
- Chancia3 sites
- Kootenia3 sites
- Kootenia spencei3 sites
- Pachyaspis gallagari3 sites
- Elrathia2 sites
- Glossopleura2 sites
- Glossopleura gigantea2 sites
- Glossopleura punctatum2 sites
- Orthotheca2 sites
- Oryctocephalites reynoldsi2 sites
- Pagetia clytia2 sites
- Poliella denticulata2 sites
- Achlysopsis hemitora1 site
- Acrothele1 site
- Acrothele affinis1 site
- Acrotreta definita1 site
- Acrotreta levata1 site
- Agnostus1 site
- Albertella1 site
- Alokistocare1 site
The Paleobiology Database records 8 sites for Bythicheilus, 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
4 references- Biostratigraphy of the Albertella and Glossopleura zones (lower Middle Cambrian) of northern Utah and southern Idaho3
- Lower and early Middle Cambrian trilobites from the Pioche Shale, East-Central Nevada, U.S.A.3
- The Spence Shale and its fauna2
- Lower and Middle Cambrian stratigraphy in northern Utah and southeastern Idaho1
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. 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 Bythicheilus
- Source
- GBIF
- Credit
- Jamison, Paul
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Bythicheilus 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 itAlokistocaridae through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Resser 1939