Sphaerexochus calvus

Sphaerexochus calvus

Yale Peabody Museum · CC0 · via GBIF. 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
SphaerexochusPBDB
Diet
carnivorePBDB, for Cheiruridae
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Sphaerexochus
Environment
marinePBDB, for Trilobita

Time the record covers

At least 20 million years on record.

The record covers at least 445.2 Mya to 425 Mya. No occurrence read is dated outside 452.8 Mya to 422.7 Mya.

Ordovician — about 14 of 26 occurrencesOrdovicianSilurian — about 12 of 26 occurrencesSilurian453–452 Mya — about 0.1 occurrences452–451 Mya — about 0.2 occurrences451–450 Mya — about 0.2 occurrences450–449 Mya — about 0.4 occurrences449–448 Mya — about 2 occurrences448–447 Mya — about 3 occurrences447–446 Mya — about 3 occurrences446–445 Mya — about 2 occurrences445–444 Mya — about 2 occurrences444–443 Mya — about 2 occurrences443–442 Mya — about 0.1 occurrences442–441 Mya — about 0.1 occurrences441–440 Mya — about 0.1 occurrences440–439 Mya — about 0.1 occurrences439–438 Mya — about 0.1 occurrences438–437 Mya — about 0.1 occurrences437–436 Mya — about 0.1 occurrences436–435 Mya — about 0.1 occurrences435–434 Mya — about 0.1 occurrences434–433 Mya — about 0.4 occurrences433–431 Mya — about 1.0 occurrences431–430 Mya — about 1 occurrence430–429 Mya — about 2 occurrences429–428 Mya — about 2 occurrences428–427 Mya — about 2 occurrences427–426 Mya — about 1 occurrence425–424 Mya — about 0.7 occurrences424–423 Mya — about 0.9 occurrences423–422 Mya — about 0.4 occurrences445.2 Mya425 Mya453.4 Mya422.1 Mya

26 occurrences of Sphaerexochus calvus 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

26 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

9 formations

Kildare Limestone — 53.17°N, 6.75°WKildare Limestone — 53.20°N, 6.92°WMotol — 50.05°N, 14.37°EMotol — 50.03°N, 14.32°EMotol — 49.97°N, 14.07°EMotol — 50.00°N, 17.78°EMotol — 49.77°N, 13.25°EMotol — 50.08°N, 14.47°EBoda Limestone — 61.00°N, 15.13°EBoda Limestone — 61.17°N, 14.71°EBoda Limestone — 61.05°N, 15.20°EChaltash — 40.41°N, 66.45°ECape Phillips — 75.13°N, 95.00°WTeremtsy Suite — 51.23°N, 30.50°ETernava Suite — 51.82°N, 34.22°EKeisley — 54.62°N, 2.45°WJonstorp — 60.91°N, 15.02°E

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The named rock units Sphaerexochus calvus 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.

Sphaerexochus calvus and its relatives

Ordovician

Where Sphaerexochus calvus and its relatives were recorded in the Ordovician.

Found in the same rock

596 taxa

The Paleobiology Database records 26 sites for Sphaerexochus calvus, 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

7 references

Each of the 26 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 content1

Picture of Sphaerexochus calvus

Source
GBIF
Credit
Yale Peabody Museum
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Sphaerexochus calvus 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 itSphaerexochus through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Mc Coy 1846