Tricrepicephalus comus

Strickland, D. K. · 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
- TricrepicephalusPBDB
- Diet
- carnivorePBDB, for Trilobita
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB, for Tricrepicephalidae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At most 18 million years on record.
Every occurrence read is dated to somewhere between 504.5 Mya and 486.85 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 occurrences of Tricrepicephalus comus 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
2 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
1 formation
- Nolichucky Formation · Consauga Group2
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The named rock units Tricrepicephalus comus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Tricrepicephalus comus and its relatives
CambrianWhere Tricrepicephalus comus and its relatives were recorded in the Cambrian.
Found in the same rock
10 taxa- Tricrepicephalus thoosa2 sites
- Aphelaspis camiro1 site
- Aphelaspis walcotti1 site
- Blountiella anaxis1 site
- Coosina amage1 site
- Crepicephalus1 site
- Cycloholcus nummus1 site
- Dicellomus appalachia1 site
- Syntrophioides harlanensis1 site
- Tricrepicephalus tripunctatus1 site
The Paleobiology Database records 2 sites for Tricrepicephalus comus, and this reads all of them. The number is how many of those sites it was catalogued from too.
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
1 referenceEach of the 2 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 content1

Picture of Tricrepicephalus comus
- Source
- GBIF
- Credit
- Strickland, D. K.
- 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 itTricrepicephalus through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Walcott 1916)