Calodiscus

Calodiscus is a genus of Eodiscinid trilobite in the family Calodiscidae. It lived during the late Lower Cambrian, with remains found in Canada, the United States, Greenland, The United Kingdom (England), Sweden, France, Germany, Italy (Sardinia), Kazakhstan, the Russian Federation and China.

No picture of Calodiscus was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Calodiscus, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
CalodiscidaePBDB
Diet
detritivorePBDB, for Agnostida
Life habit
epifaunalPBDB, for Agnostida
Motility
slow-movingPBDB, for Agnostida
Vision
blindPBDB

Time the record covers

At least 15 million years on record.

The record covers at least 512.1 Mya to 497 Mya. No occurrence read is dated outside 521 Mya to 486.85 Mya.

Cambrian — about 40 of 40 occurrencesCambrianOrdovician — about 0 of 40 occurrences522–520 Mya — about 0.1 occurrences520–519 Mya — about 0.3 occurrences519–518 Mya — about 0.3 occurrences518–517 Mya — about 0.3 occurrences517–516 Mya — about 0.7 occurrences516–515 Mya — about 4 occurrences515–513 Mya — about 6 occurrences513–512 Mya — about 6 occurrences512–511 Mya — about 5 occurrences511–510 Mya — about 5 occurrences510–509 Mya — about 2 occurrences509–507 Mya — about 2 occurrences507–506 Mya — about 2 occurrences506–505 Mya — about 0.9 occurrences505–504 Mya — about 0.6 occurrences504–503 Mya — about 0.2 occurrences503–502 Mya — about 0.2 occurrences502–500 Mya — about 0.2 occurrences500–499 Mya — about 0.2 occurrences499–498 Mya — about 0.2 occurrences498–497 Mya — about 0.3 occurrences497–496 Mya — about 0.3 occurrences496–494 Mya — about 0.3 occurrences494–493 Mya — about 0.3 occurrences493–492 Mya — about 0.3 occurrences492–491 Mya — about 0.3 occurrences491–490 Mya — about 0.3 occurrences490–489 Mya — about 0.3 occurrences489–487 Mya — about 0.3 occurrences487–486 Mya — about 0.1 occurrences512.1 Mya497 Mya521.7 Mya486.2 Mya

40 occurrences of Calodiscus on record, most of them in the Cambrian. 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

40 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

19 formations

Bastion — 74.10°N, 23.00°WBastion — 72.85°N, 25.03°WForteau — 49.60°N, 57.83°WForteau — 51.02°N, 56.81°WForteau — 51.47°N, 56.84°WForteau — 50.73°N, 56.12°WForteau — 49.89°N, 56.27°WForteau — 50.98°N, 56.32°WStissing — 42.41°N, 73.53°WStissing — 43.17°N, 73.32°WSofiekammen — 76.90°N, 15.98°EGislov — 55.49°N, 14.32°EGislov — 55.72°N, 13.27°ELower Comley — 52.56°N, 2.76°WShuangyingshan — 41.49°N, 96.72°EZwetau — 51.17°N, 15.00°EWeymouth — 41.95°N, 71.28°WBerikul — 56.00°N, 88.00°EBrowns Pond — 42.22°N, 73.73°WAkdurug — 51.72°N, 92.20°EShabakty — 43.60°N, 69.45°ECampo Pisano — 39.40°N, 8.52°ETröbitz — 51.62°N, 13.35°EKap Troedsson — 81.74°N, 44.43°WKuonamka — 66.50°N, 116.00°EBrigus — 47.85°N, 53.94°WRingstrand — 60.95°N, 10.78°E

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The named rock units Calodiscus 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.

Calodiscus and its relatives

Cambrian

Where Calodiscus and its relatives were recorded in the Cambrian.

Found in the same rock

202 taxa

The Paleobiology Database records 33 sites for Calodiscus, 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

23 references

Each of the 40 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. 11 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 Calodiscus was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Calodiscus, or no answer at all. This entry cannot say which.

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 itCalodiscidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Howell 1935