Tretaspis askerensis
No picture of Tretaspis askerensis was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Tretaspis askerensis, or no answer at all. This entry cannot say which.
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.
8 occurrences of Tretaspis askerensis 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
8 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
2 formations
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The named rock units Tretaspis askerensis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Tretaspis askerensis and its relatives
OrdovicianWhere Tretaspis askerensis and its relatives were recorded in the Ordovician.
Found in the same rock
28 taxa- Erratencrinurus (Celtencrinurus) kiaeri3 sites
- Hadromeros keisleyensis2 sites
- Acidaspis1 site
- Amphilichas lineatus1 site
- Christiania1 site
- Cymbularia bullatus1 site
- Dicranopeltis polytoma1 site
- Dolerorthis1 site
- Drabovia1 site
- Eochonetes1 site
- Eoplectodonta oscitanda1 site
- Eospirigerina1 site
- Fardenia (Coolinia) dalmani1 site
- Hindella cassidea1 site
- Leangella1 site
- Leptaena1 site
- Lonchodomas1 site
- Miraspis1 site
- Nicolella1 site
- Onniella kalvoya1 site
- Primaspis evoluta1 site
- Remopleurides nikolaiseni1 site
- Sampo1 site
- Sampo ruralis1 site
The Paleobiology Database records 8 sites for Tretaspis askerensis, 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, Norway1
Each of the 8 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 content0
No picture of Tretaspis askerensis was found. Wikipedia, Wikidata and iDigBio were searched and had none.
Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Tretaspis askerensis, or no answer at all. This entry cannot say which.
No 3D scan of Tretaspis askerensis 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. Owen 1980