Cheiruridae

Cheiruridae is a family of phacopid trilobites of the suborder Cheirurina. Its members, as with other members of the suborder, had distinctive pygidial modified into finger-like spines. They first appeared in the uppermost Cambrian, and persisted until the end of the Middle Devonian (Givetian). Currently about 657 species assigned to 99 genera are included.

Cheiruridae

Daderot · CC0 · via Wikipedia/Commons. 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
CheirurinaPBDB
Diet
carnivorePBDB
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Environment
marinePBDB, for Trilobita

Time the record covers

At least 104 million years on record.

The record covers at least 486.85 Mya to 382.31 Mya. No occurrence read is dated outside 497 Mya to 379 Mya.

Cambrian — about 2 of 2214 occurrencesCambrianOrdovician — about 1637 of 2214 occurrencesOrdovicianSilurian — about 451 of 2214 occurrencesSilurianDevonian — about 124 of 2214 occurrencesDevonian499–495 Mya — about 0.3 occurrences495–491 Mya — about 0.8 occurrences491–487 Mya — about 0.8 occurrences487–483 Mya — about 25 occurrences483–479 Mya — about 37 occurrences479–475 Mya — about 28 occurrences475–471 Mya — about 83 occurrences471–467 Mya — about 190 occurrences467–463 Mya — about 125 occurrences463–458 Mya — about 180 occurrences458–454 Mya — about 296 occurrences454–450 Mya — about 323 occurrences450–446 Mya — about 244 occurrences446–442 Mya — about 115 occurrences442–438 Mya — about 67 occurrences438–434 Mya — about 68 occurrences434–430 Mya — about 131 occurrences430–426 Mya — about 93 occurrences426–422 Mya — about 76 occurrences422–418 Mya — about 15 occurrences418–413 Mya — about 17 occurrences413–409 Mya — about 56 occurrences409–405 Mya — about 7 occurrences405–401 Mya — about 7 occurrences401–397 Mya — about 8 occurrences397–393 Mya — about 9 occurrences393–389 Mya — about 7 occurrences389–385 Mya — about 3 occurrences385–381 Mya — about 3 occurrences381–377 Mya — about 0.5 occurrences486.85 Mya382.31 Mya499 Mya377 Mya

2,214 occurrences of Cheiruridae 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

2,214 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

479 formations

Whittaker — 62.00°N, 127.00°WWhittaker — 62.48°N, 124.78°WWhittaker — 61.52°N, 124.87°WWhittaker — 63.28°N, 125.35°WWhittaker — 61.48°N, 125.05°WWhittaker — 62.46°N, 124.88°WWhittaker — 62.38°N, 127.00°WWhittaker — 62.77°N, 125.25°WWhittaker — 62.50°N, 125.25°WEsbataottine — 62.00°N, 127.00°WEsbataottine — 61.72°N, 125.93°WEsbataottine — 62.47°N, 124.85°WEsbataottine — 61.63°N, 125.73°WEsbataottine — 62.17°N, 127.42°WEsbataottine — 61.63°N, 125.75°WEsbataottine — 62.12°N, 126.68°WEsbataottine — 61.32°N, 125.38°WVolkhov — 59.97°N, 32.57°EVolkhov — 59.75°N, 30.43°EDelorme — 62.38°N, 127.00°WDelorme — 62.78°N, 125.25°WBoda Limestone — 60.97°N, 15.15°EBoda Limestone — 61.17°N, 14.71°EBoda Limestone — 61.05°N, 15.20°EBoda Limestone — 61.15°N, 15.12°EBoda Limestone — 61.33°N, 14.55°EBoda Limestone — 61.12°N, 15.16°EBoda Limestone — 60.97°N, 15.43°ECrown Point — 44.61°N, 73.42°WCrown Point — 44.71°N, 73.46°WCrown Point — 44.64°N, 73.32°WCrown Point — 44.87°N, 73.41°WCrown Point — 44.84°N, 73.35°WCrown Point — 44.58°N, 73.53°WEdinburg — 38.99°N, 78.36°WEdinburg — 38.99°N, 78.35°WEdinburg — 38.84°N, 78.55°WEdinburg — 38.82°N, 78.55°WEdinburg — 38.56°N, 78.86°WEdinburg — 36.88°N, 81.68°WEdinburg — 37.74°N, 79.51°WMotol — 50.00°N, 17.78°EMotol — 49.95°N, 12.93°EMotol — 49.95°N, 14.22°EMotol — 50.05°N, 14.37°EMotol — 50.03°N, 14.32°EMotol — 49.97°N, 14.13°EMotol — 49.77°N, 13.25°EMotol — 50.08°N, 14.47°EKildare Limestone — 53.17°N, 6.75°WKildare Limestone — 53.20°N, 6.92°WLas Aguaditas — 30.33°S, 68.80°WAntelope Valley — 39.09°N, 116.85°WAntelope Valley — 38.05°N, 116.45°WAntelope Valley — 36.88°N, 116.65°WAntelope Valley — 39.00°N, 116.62°WAntelope Valley — 37.12°N, 116.50°WAntelope Valley — 36.39°N, 116.61°WAntelope Valley — 36.76°N, 115.76°WMingan — 50.21°N, 63.45°WMingan — 50.21°N, 63.59°WMingan — 50.20°N, 63.92°WMingan — 50.21°N, 64.13°WMingan — 50.21°N, 63.75°WMingan — 50.20°N, 63.34°WHolen — 57.37°N, 17.08°EHolen — 57.32°N, 17.00°EHolen — 57.15°N, 16.92°EHolen — 57.03°N, 16.88°EHolen — 57.00°N, 16.82°EHolen — 57.17°N, 16.94°EHolen — 56.62°N, 16.56°EBalclatchie — 55.23°N, 4.74°WBalclatchie — 55.22°N, 4.85°WBalclatchie — 54.84°N, 4.05°WBalclatchie — 55.17°N, 4.87°WBalclatchie — 55.31°N, 4.80°WKopanina — 50.00°N, 14.35°EKopanina — 49.95°N, 12.93°EKopanina — 49.95°N, 14.22°EKopanina — 49.52°N, 13.50°EKopanina — 50.08°N, 14.47°EKopanina — 49.93°N, 14.18°EValcour — 44.61°N, 73.42°WValcour — 44.87°N, 73.41°WValcour — 44.30°N, 73.31°WValcour — 43.97°N, 73.39°WJupiter — 49.51°N, 63.63°WJupiter — 49.47°N, 63.12°WJupiter — 49.38°N, 63.51°WJupiter — 49.56°N, 63.35°WJupiter — 49.38°N, 63.40°WJupiter — 49.35°N, 63.25°WJupiter — 49.20°N, 62.22°WJupiter — 49.15°N, 62.20°WJupiter — 49.18°N, 62.41°WJupiter — 49.48°N, 63.16°WBobcaygeon — 44.67°N, 78.80°WBobcaygeon — 44.53°N, 78.55°WBobcaygeon — 44.50°N, 79.20°WBobcaygeon — 44.60°N, 79.00°WBobcaygeon — 44.58°N, 79.09°WDay Point — 44.61°N, 73.42°WDay Point — 44.65°N, 73.45°WDay Point — 44.88°N, 73.46°WDay Point — 44.85°N, 73.33°WDay Point — 44.86°N, 73.33°WDay Point — 44.84°N, 73.36°WTable Cove — 50.36°N, 57.54°WTable Cove — 48.85°N, 54.00°WRacine — 43.05°N, 88.01°WRacine — 42.73°N, 87.78°WRacine — 42.88°N, 88.04°WRacine — 43.01°N, 88.38°WRacine — 43.03°N, 87.90°WSunblood — 62.00°N, 126.00°WSunblood — 62.00°N, 127.00°WSunblood — 61.72°N, 125.93°WSunblood — 61.32°N, 125.38°WSunblood — 62.18°N, 126.70°WSunblood — 61.20°N, 125.78°WSunblood — 61.52°N, 125.73°WRacine Dolomite — 41.67°N, 88.00°WRacine Dolomite — 43.00°N, 88.00°WRacine Dolomite — 38.97°N, 90.43°WRacine Dolomite — 41.12°N, 88.02°WRacine Dolomite — 42.72°N, 87.78°WRacine Dolomite — 41.57°N, 87.60°WStinchar Limestone — 55.20°N, 4.75°W

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The named rock units Cheiruridae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 455 further formations hold fewer occurrences each and are not listed. 134 occurrences have no formation on record, which is common for older literature.

Cheiruridae and its relatives

Ordovician

Where Cheiruridae and its relatives were recorded in the Ordovician.

Found in the same rock

3,238 taxa

The Paleobiology Database records at least 1,207 sites for Cheiruridae, and this reads 240 of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

413 references

Each of the 2,214 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. 401 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 content1

Picture of Cheiruridae

Credit
Daderot
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Cheiruridae 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

What may have been alongside itCheirurina through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hawle and Corda 1847