Ischyrotoma

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

On record

Recorded, not inferred
Sits inside
DimeropygidaePBDB
Diet
deposit feederPBDB, for Proetida
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Dimeropygidae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 23 million years on record.

The record covers at least 477.1 Mya to 453.8 Mya. No occurrence read is dated outside 486.85 Mya to 450.2 Mya.

Cambrian — about 0 of 100 occurrencesOrdovician — about 100 of 100 occurrencesOrdovician488–486 Mya — about 1.0 occurrences486–485 Mya — about 2 occurrences485–484 Mya — about 2 occurrences484–483 Mya — about 4 occurrences483–481 Mya — about 6 occurrences481–480 Mya — about 6 occurrences480–479 Mya — about 6 occurrences479–477 Mya — about 6 occurrences477–476 Mya — about 7 occurrences476–475 Mya — about 7 occurrences475–474 Mya — about 9 occurrences474–472 Mya — about 9 occurrences472–471 Mya — about 10 occurrences471–470 Mya — about 9 occurrences470–469 Mya — about 1 occurrence469–467 Mya — about 1 occurrence467–466 Mya — about 1 occurrence466–465 Mya — about 1 occurrence465–463 Mya — about 1 occurrence463–462 Mya — about 1 occurrence462–461 Mya — about 1 occurrence461–460 Mya — about 1 occurrence460–458 Mya — about 1 occurrence458–457 Mya — about 0.8 occurrences455–453 Mya — about 0.1 occurrences453–452 Mya — about 0.4 occurrences452–451 Mya — about 0.4 occurrences451–449 Mya — about 0.1 occurrences477.1 Mya453.8 Mya487.6 Mya449.5 Mya

100 occurrences of Ischyrotoma 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

100 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

20 formations

Kindblade — 34.37°N, 97.14°WKindblade — 34.97°N, 98.63°WCatoche — 48.55°N, 59.25°WCatoche — 50.73°N, 57.36°WCatoche — 51.59°N, 55.99°WCatoche — 51.63°N, 55.90°WCatoche — 50.73°N, 57.35°WCatoche — 48.54°N, 58.74°WCatoche — 50.73°N, 57.25°WCatoche — 50.36°N, 57.54°WCatoche — 50.76°N, 57.22°WCatoche — 50.77°N, 57.14°WAntelope Valley — 36.88°N, 116.66°WAntelope Valley — 39.00°N, 116.62°WAntelope Valley — 36.39°N, 116.61°WWahwah — 39.18°N, 113.50°WWahwah — 38.85°N, 113.46°WNinemile — 37.00°N, 116.00°WNinemile — 36.65°N, 116.17°WNinemile — 37.30°N, 115.80°WNinemile — 37.34°N, 115.38°WKirtonryggen — 79.85°N, 17.67°EJuab — 39.18°N, 113.50°WSurvey Peak — 52.88°N, 118.08°WShingle Limestone — 39.62°N, 115.07°WBeauharnois — 45.29°N, 74.13°WValhallfonna — 79.80°N, 17.76°EBoat Harbour — 50.77°N, 57.14°WAmadjuak — 63.72°N, 68.97°WSunblood — 61.72°N, 125.93°WFort Cassin — 43.60°N, 73.33°WDounans Limestone — 56.00°N, 4.00°WTable Cove — 50.36°N, 57.54°WWoodward D — 39.48°N, 114.92°WYijianfang — 40.20°N, 78.90°EWandel Valley — 80.74°N, 22.99°W

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The named rock units Ischyrotoma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.

Ischyrotoma and its relatives

Ordovician

Where Ischyrotoma and its relatives were recorded in the Ordovician.

Found in the same rock

455 taxa

The Paleobiology Database records 91 sites for Ischyrotoma, 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

31 references

Each of the 100 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. 19 further references are not listed. 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 Ischyrotoma 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 Ischyrotoma, or no answer at all. This entry cannot say which.

No 3D scan of Ischyrotoma 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 itDimeropygidae through timeFormations of the OrdovicianThe world it lived on

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