Strotactinus

Strotactinus is an extinct genus of trilobite in the family Pliomeridae. There is one described species in Strotactinus, S. insularis.

No picture of Strotactinus 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 Strotactinus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
CybelopsinaePBDB
Diet
carnivorePBDB, for Trilobita
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Pliomeridae
Environment
marinePBDB, for Trilobita

Time the record covers

At most 21 million years on record.

Every occurrence read is dated to somewhere between 488.9 Mya and 468 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Cambrian — about 0 of 17 occurrencesCambrianOrdovician — about 17 of 17 occurrencesOrdovician489–489 Mya — about 0.0 occurrences489–488 Mya — about 0.0 occurrences488–487 Mya — about 0.0 occurrences487–486 Mya — about 0.0 occurrences486–486 Mya — about 0.0 occurrences486–485 Mya — about 0.0 occurrences485–484 Mya — about 0.0 occurrences484–484 Mya — about 0.0 occurrences484–483 Mya — about 0.5 occurrences483–482 Mya — about 0.6 occurrences482–481 Mya — about 0.7 occurrences481–481 Mya — about 0.9 occurrences481–480 Mya — about 0.9 occurrences480–479 Mya — about 0.9 occurrences479–478 Mya — about 0.9 occurrences478–478 Mya — about 0.9 occurrences478–477 Mya — about 0.9 occurrences477–476 Mya — about 1 occurrence476–476 Mya — about 1 occurrence476–475 Mya — about 1 occurrence475–474 Mya — about 1 occurrence474–473 Mya — about 1 occurrence473–473 Mya — about 1 occurrence473–472 Mya — about 1 occurrence472–471 Mya — about 1 occurrence471–470 Mya — about 0.1 occurrences470–470 Mya — about 0.1 occurrences470–469 Mya — about 0.1 occurrences469–468 Mya — about 0.1 occurrences468–468 Mya — about 0.0 occurrences489.4 Mya467.5 Mya

17 occurrences of Strotactinus 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

17 occurrences

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

6 formations

Catoche — 50.73°N, 57.36°WCatoche — 51.63°N, 55.90°WCatoche — 50.73°N, 57.25°WCatoche — 50.77°N, 57.14°WDounans Limestone — 56.00°N, 4.00°WValhallfonna — 79.80°N, 17.76°ERomaine — 50.20°N, 63.40°WOxford — 44.93°N, 75.60°WWandel Valley — 80.74°N, 22.99°W

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The named rock units Strotactinus has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Strotactinus and its relatives

Ordovician

Where Strotactinus and its relatives were recorded in the Ordovician.

Found in the same rock

102 taxa

The Paleobiology Database records 16 sites for Strotactinus, 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

12 references

Each of the 17 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 content0

No picture of Strotactinus 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 Strotactinus, or no answer at all. This entry cannot say which.

No 3D scan of Strotactinus 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.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

Everything alive alongside itCybelopsinae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Bradley 1925