Calyptaulax

Calyptaulax is a genus of trilobites in the order Phacopida that existed during the middle and upper Ordovician in what is now the U.S. states of New York, Pennsylvania, Oklahoma, Illinois, Missouri, Virginia, Vermont, Nevada, Iowa, Wisconsin, Kentucky, and Iowa, as well as the Canadian provinces of Ontario, Newfoundland and Labrador, Quebec, and the territory of Nunavut. Other countries Calyptaulax fossils are known from include Ireland, Norway, Russia, and the United Kingdom.

Calyptaulax

via iDigBio · CC0 · via iDigBio. 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
EomonorachinaePBDB
Diet
carnivorePBDB, for Phacopina
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Pterygometopidae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 26 million years on record.

The record covers at least 471.3 Mya to 445.2 Mya. No occurrence read is dated outside 488.9 Mya to 443.1 Mya.

Cambrian — about 0 of 273 occurrencesOrdovician — about 273 of 273 occurrencesOrdovicianSilurian — about 0 of 273 occurrences490–488 Mya — about 0.0 occurrences488–487 Mya — about 0.1 occurrences487–485 Mya — about 0.1 occurrences485–483 Mya — about 0.1 occurrences483–482 Mya — about 0.1 occurrences482–480 Mya — about 0.1 occurrences480–479 Mya — about 0.1 occurrences479–477 Mya — about 0.1 occurrences477–476 Mya — about 0.1 occurrences476–474 Mya — about 0.1 occurrences474–472 Mya — about 0.1 occurrences472–471 Mya — about 3 occurrences471–469 Mya — about 8 occurrences469–468 Mya — about 8 occurrences468–466 Mya — about 8 occurrences466–464 Mya — about 8 occurrences464–463 Mya — about 8 occurrences463–461 Mya — about 8 occurrences461–460 Mya — about 8 occurrences460–458 Mya — about 10 occurrences458–456 Mya — about 33 occurrences456–455 Mya — about 31 occurrences455–453 Mya — about 31 occurrences453–452 Mya — about 33 occurrences452–450 Mya — about 26 occurrences450–449 Mya — about 26 occurrences449–447 Mya — about 9 occurrences447–445 Mya — about 8 occurrences445–444 Mya — about 4 occurrences444–442 Mya — about 2 occurrences471.3 Mya445.2 Mya489.8 Mya442.2 Mya

273 occurrences of Calyptaulax 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

273 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

85 formations

Esbataottine — 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°WEdinburg — 38.99°N, 78.35°WEdinburg — 38.99°N, 78.36°WEdinburg — 38.84°N, 78.55°WEdinburg — 36.88°N, 81.68°WEdinburg — 37.74°N, 79.51°WCrown Point — 44.61°N, 73.42°WCrown Point — 44.58°N, 73.53°WWitten Limestone — 37.00°N, 81.00°WWitten Limestone — 37.20°N, 81.36°WWitten Limestone — 37.11°N, 81.52°WWitten Limestone — 37.02°N, 81.63°WWitten Limestone — 37.03°N, 81.79°WWitten Limestone — 37.10°N, 81.62°WCopenhagen — 39.44°N, 116.29°WCopenhagen — 39.20°N, 116.25°WCopenhagen — 39.23°N, 116.41°WCopenhagen — 38.82°N, 116.50°WWhittaker — 62.00°N, 127.00°WWhittaker — 61.52°N, 124.87°WWhittaker — 62.47°N, 124.85°WWhittaker — 63.28°N, 125.35°WWhittaker — 61.48°N, 125.05°WWhittaker — 62.46°N, 124.88°WWhittaker — 62.50°N, 125.25°WBalclatchie — 55.22°N, 4.85°WBalclatchie — 55.17°N, 4.87°WBalclatchie — 55.31°N, 4.80°WVerulam — 44.75°N, 79.33°WVerulam — 44.50°N, 78.58°WVerulam — 44.45°N, 78.70°WVerulam — 44.43°N, 78.78°WVerulam — 44.53°N, 78.98°WVerulam — 44.02°N, 77.15°WVerulam — 44.50°N, 79.17°WDay Point — 44.61°N, 73.42°WDay Point — 44.65°N, 73.45°WMingan — 50.21°N, 63.62°WMingan — 50.21°N, 63.75°WMingan — 50.21°N, 63.90°WMingan — 50.21°N, 64.13°WSolvang — 60.00°N, 11.00°ESolvang — 60.13°N, 10.28°ESolvang — 59.90°N, 10.63°ESolvang — 59.87°N, 10.51°EWardell — 37.00°N, 81.00°WWardell — 37.03°N, 81.79°WWardell — 37.02°N, 81.73°WWardell — 37.11°N, 81.52°WWardell — 37.10°N, 81.34°WCampile — 53.45°N, 7.17°WCampile — 53.42°N, 7.17°WWhite Head — 48.47°N, 64.32°WWhite Head — 48.58°N, 68.18°WWhite Head — 48.50°N, 64.23°WSunblood — 62.00°N, 127.00°WSunblood — 61.72°N, 125.93°WSunblood — 61.52°N, 125.73°WAntelope Valley — 38.05°N, 116.45°WAntelope Valley — 39.20°N, 116.25°WAntelope Valley — 36.88°N, 116.66°WAntelope Valley — 39.23°N, 116.41°WNakkholmen — 59.90°N, 10.63°ENakkholmen — 59.84°N, 10.54°EGrimsøya — 59.86°N, 10.52°EGrimsøya — 59.92°N, 10.72°EGrimsøya — 58.45°N, 8.76°ERust — 43.28°N, 75.14°WKhankhara — 51.07°N, 84.94°EKhankhara — 51.26°N, 82.81°EKirkley Bank — 54.43°N, 2.78°WHanson Creek — 39.38°N, 116.14°WHanson Creek — 39.00°N, 116.00°WGrande Coupe — 48.54°N, 64.25°WBobcaygeon — 44.53°N, 78.55°WBobcaygeon — 44.50°N, 79.20°WBobcaygeon — 44.60°N, 79.00°W

Loading coastlines…

The named rock units Calyptaulax has been recovered from, largest first. Drawn where the rock is now, not where it formed. 61 further formations hold fewer occurrences each and are not listed. 13 occurrences have no formation on record, which is common for older literature.

Calyptaulax and its relatives

Ordovician

Where Calyptaulax and its relatives were recorded in the Ordovician.

Found in the same rock

1,559 taxa

The Paleobiology Database records 258 sites for Calyptaulax, and this reads 240 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

76 references

Each of the 273 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. 64 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 Calyptaulax

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itEomonorachinae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Cooper 1930