Crozonaspis

Crozonaspis is a trilobite in the order Phacopida, that existed during the middle Ordovician in what is now France. It was described by Henry in 1968, and the type species is Crozonaspis struvei. It was described from Brittany.

No picture of Crozonaspis 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 Crozonaspis, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
DalmanitidaePBDB
Diet
carnivorePBDB, for Phacopina
Life habit
low-level epifaunalPBDB, for Trilobita
Motility
fast-movingPBDB, for Trilobita
Vision
well-developedPBDB, for Dalmanitidae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 10 million years on record.

The record covers at least 461 Mya to 450.1 Mya. No occurrence read is dated outside 471.3 Mya to 443.1 Mya.

Ordovician — about 57 of 57 occurrencesOrdovicianSilurian — about 0 of 57 occurrences472–471 Mya — about 0.2 occurrences471–470 Mya — about 0.4 occurrences470–469 Mya — about 0.5 occurrences469–468 Mya — about 0.6 occurrences468–467 Mya — about 1 occurrence467–466 Mya — about 1 occurrence466–465 Mya — about 1 occurrence465–464 Mya — about 1 occurrence464–463 Mya — about 1 occurrence463–462 Mya — about 1 occurrence462–461 Mya — about 1 occurrence461–460 Mya — about 17 occurrences460–459 Mya — about 11 occurrences459–458 Mya — about 6 occurrences458–457 Mya — about 1 occurrence457–456 Mya — about 1 occurrence456–455 Mya — about 1 occurrence455–454 Mya — about 1 occurrence454–453 Mya — about 1 occurrence453–452 Mya — about 1 occurrence452–451 Mya — about 1 occurrence451–450 Mya — about 1 occurrence450–449 Mya — about 0.9 occurrences449–448 Mya — about 0.5 occurrences448–447 Mya — about 0.5 occurrences447–446 Mya — about 0.5 occurrences446–445 Mya — about 0.5 occurrences445–444 Mya — about 0.2 occurrences444–444 Mya — about 0.1 occurrences444–443 Mya — about 0.1 occurrences461 Mya450.1 Mya471.9 Mya442.5 Mya

57 occurrences of Crozonaspis 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

57 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

28 formations

Untere Quartzite — 38.38°N, 3.76°WUntere Quartzite — 38.86°N, 4.08°WUntere Quartzite — 39.05°N, 4.17°WFonte da Horta — 41.00°N, 8.00°WFonte da Horta — 40.00°N, 8.00°WPostolonnec — 48.24°N, 4.47°WPostolonnec — 47.90°N, 1.75°WBotella Quartzite — 38.77°N, 4.83°WBotella Quartzite — 38.26°N, 4.13°WBotella Quartzite — 38.72°N, 5.22°WNavas de Estena — 39.00°N, 4.00°WBotella-Quarzit — 39.41°N, 7.24°WSueve Shale — 43.47°N, 5.06°WSueve Shale — 43.00°N, 5.00°WAndouillé — 48.18°N, 0.78°WAndouillé — 48.12°N, 0.72°WUrville — 49.10°N, 0.38°WUrville — 49.23°N, 1.64°WGrès de May — 49.10°N, 0.37°WGrès de May — 49.02°N, 0.74°WMont de Besneville — 49.73°N, 1.94°WMont de Besneville — 49.39°N, 1.52°WGorran Quartzites — 50.49°N, 4.66°WSchistes Botella — 38.00°N, 4.00°WSchistes de Morgat — 48.25°N, 4.47°WSchistes à nodules — 48.00°N, 1.00°Wd'Urville — 49.00°N, 0.00°EOnnia Shale — 39.41°N, 7.24°WPizarras Guindo — 38.70°N, 3.77°WCarregueira — 39.00°N, 8.00°WPizarras Carretera — 39.00°N, 4.00°WQuartzites Botella — 38.00°N, 4.00°WBou Zeroual — 30.14°N, 6.36°WCantera Shale — 38.90°N, 4.06°WKermeur — 48.24°N, 4.46°W

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The named rock units Crozonaspis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 further formations hold fewer occurrences each and are not listed. 2 occurrences have no formation on record, which is common for older literature.

Crozonaspis and its relatives

Ordovician

Where Crozonaspis and its relatives were recorded in the Ordovician.

Found in the same rock

216 taxa

The Paleobiology Database records 49 sites for Crozonaspis, 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

20 references

Each of the 57 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. 8 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 Crozonaspis 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 Crozonaspis, or no answer at all. This entry cannot say which.

No 3D scan of Crozonaspis 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.

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 itDalmanitidae through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Henry 1968