Sphaerexochinae
No picture of Sphaerexochinae 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 Sphaerexochinae, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- CheiruridaePBDB
- Diet
- carnivorePBDB, for Cheiruridae
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 46 million years on record.
The record covers at least 471.3 Mya to 425 Mya. No occurrence read is dated outside 486.85 Mya to 422.7 Mya.
353 occurrences of Sphaerexochinae 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
353 occurrences- Ordovician76%
- Silurian24%
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
128 formations
- Kildare Limestone Formation19
- Crown Point Formation · Chazy Group16
- Esbataottine Formation12
- Whittaker Formation12
- Edinburg Formation11
- Boda Limestone Formation10
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The named rock units Sphaerexochinae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 104 further formations hold fewer occurrences each and are not listed. 17 occurrences have no formation on record, which is common for older literature.
Sphaerexochinae and its relatives
OrdovicianWhere Sphaerexochinae and its relatives were recorded in the Ordovician.
Found in the same rock
2,671 taxa- Sphaerexochus60 sites
- Bumastus33 sites
- Pseudosphaerexochus31 sites
- Deiphon25 sites
- Lonchodomas25 sites
- Sphaerocoryphe24 sites
- Encrinurus22 sites
- Gastropoda21 sites
- Remopleurides21 sites
- Leptaena20 sites
- Bivalvia19 sites
- Calyptaulax18 sites
- Crinoidea18 sites
- Heliolites18 sites
- Sphaerexochus calvus18 sites
- Amphilichas minganensis17 sites
- Brachiopoda17 sites
- Illaenus17 sites
- Acidaspis16 sites
- Bryozoa16 sites
- Leonaspis16 sites
- Sowerbyella16 sites
- Sphaerexochus valcourensis16 sites
- Calyptaulax annulata15 sites
The Paleobiology Database records 315 sites for Sphaerexochinae, 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
114 references- Ordovician trilobites from the Romaine and Mingan Formations (Ibexian-Late Whiterockian), Mingan Islands, Quebec23
- The Trilobites of the Leptæna Limestone in Dalarne22
- Cheirurina (Trilobita) from the upper Ordovician of Västergötland and other regions of Sweden19
- The Trilobites of the Chair of Kildare Limestone (Upper Ordovician) of Eastern Ireland. Part I.17
- The Chazy Formation and its fauna13
- The Ashgill Trilobites of the Oslo Region, Norway12
- Silurian cheirurid trilobites from Gotland11
- Silurian cheirurid trilobites from the Mackenzie Mountains, northwestern Canada10
- Trilobite Biofacies along an Ordovician (Sandbian) Carbonate Buildup to Basin Gradient, Southwestern Virginia9
- Ordovician formations and faunas, southern Mackenzie Mountains8
- Silurian Reefs of Gotland7
- Silurian trilobite associations in North America6
Each of the 353 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. 102 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 Sphaerexochinae 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 Sphaerexochinae, or no answer at all. This entry cannot say which.
No 3D scan of Sphaerexochinae was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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 itCheiruridae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Opik 1937