Xenostegium

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

On record

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

Time the record covers

At least 1.7 million years on record.

The record covers at least 483.4 Mya to 481.7 Mya. No occurrence read is dated outside 488.9 Mya to 457.3 Mya.

Cambrian — about 4 of 22 occurrencesOrdovician — about 18 of 22 occurrencesOrdovician490–488 Mya — about 0.8 occurrences488–487 Mya — about 2 occurrences487–486 Mya — about 3 occurrences486–485 Mya — about 3 occurrences485–484 Mya — about 3 occurrences484–483 Mya — about 2 occurrences483–482 Mya — about 1 occurrence482–481 Mya — about 1 occurrence481–480 Mya — about 1 occurrence480–479 Mya — about 1 occurrence479–477 Mya — about 1 occurrence477–476 Mya — about 0.6 occurrences476–475 Mya — about 0.3 occurrences475–474 Mya — about 0.2 occurrences474–473 Mya — about 0.2 occurrences473–472 Mya — about 0.2 occurrences472–471 Mya — about 0.1 occurrences471–470 Mya — about 0.0 occurrences470–469 Mya — about 0.0 occurrences469–468 Mya — about 0.0 occurrences468–467 Mya — about 0.0 occurrences467–465 Mya — about 0.0 occurrences465–464 Mya — about 0.0 occurrences464–463 Mya — about 0.0 occurrences463–462 Mya — about 0.0 occurrences462–461 Mya — about 0.0 occurrences461–460 Mya — about 0.0 occurrences460–459 Mya — about 0.0 occurrences459–458 Mya — about 0.0 occurrences458–457 Mya — about 0.0 occurrences483.4 Mya – 481.7 Mya489.5 Mya456.7 Mya

22 occurrences of Xenostegium 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

22 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

5 formations

House Limestone — 39.50°N, 113.39°WHouse Limestone — 38.92°N, 113.36°WHouse Limestone — 38.79°N, 113.64°WDeadwood — 47.42°N, 105.59°WGarden City — 42.11°N, 111.63°WGarden City — 41.77°N, 111.77°WGoodwin — 36.39°N, 116.61°WGoodwin — 36.88°N, 116.66°WGoodwin — 37.12°N, 116.50°WWoodward B — 39.48°N, 114.92°W

Loading coastlines…

The named rock units Xenostegium has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Xenostegium and its relatives

Ordovician

Where Xenostegium and its relatives were recorded in the Ordovician.

Found in the same rock

48 taxa

The Paleobiology Database records 21 sites for Xenostegium, 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

9 references

Each of the 22 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 Xenostegium 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 Xenostegium, or no answer at all. This entry cannot say which.

No 3D scan of Xenostegium 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 itAsaphidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1924