Tretaspis sortita
via iDigBio · CC BY · via iDigBio. 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
- TretaspisPBDB
- Diet
- suspension feederPBDB, for Trinucleidae
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- limitedPBDB, for Tretaspis
- Environment
- marinePBDB, for Trilobita
Time the record covers
At most 9.7 million years on record.
Every occurrence read is dated to somewhere between 452.8 Mya and 443.1 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
13 occurrences of Tretaspis sortita on record, most of them in the Ordovician. 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
13 occurrences- Ordovician100%
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 Tretaspis sortita has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Tretaspis sortita and its relatives
OrdovicianWhere Tretaspis sortita and its relatives were recorded in the Ordovician.
Found in the same rock
31 taxa- Stygina latifrons5 sites
- Primaspis evoluta3 sites
- Tretaspis latilimba3 sites
- Archinacella2 sites
- Cymbularia bullatus2 sites
- Eoplectodonta oscitanda2 sites
- Eucystis langoeyensis2 sites
- Lonchodomas2 sites
- Loxonemataceans indet.2 sites
- Remopleurides nikolaiseni2 sites
- Stygina2 sites
- Amphicyrtoceras benedictae1 site
- Archinacella approximans1 site
- Ascetopeltis bockeliei1 site
- Calymenidae1 site
- Cliftonia psittacina1 site
- Cybeloides girvanensis1 site
- Dicranopeltis polytoma1 site
- Dindymene1 site
- Eostropheodonta hirnantensis1 site
- Erratencrinurus (Celtencrinurus) kiaeri1 site
- Hallopora1 site
- Leptaena1 site
- Loxonematoidea1 site
The Paleobiology Database records 12 sites for Tretaspis sortita, 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
2 references- The trilobite Tretaspis from the upper Ordovician of the Oslo region, Norway7
- Ecological associations in a regressive sequence: the latest Ordovician of the Oslo-Asker district, Norway6
Each of the 13 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 Tretaspis sortita
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC BY
- Commercial use
- the licence allows it
No 3D scan of Tretaspis sortita was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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 itTretaspis through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Reed 1935