Stephenaspis

No picture of Stephenaspis was found. Wikidata and iDigBio were searched and had none. Wikipedia and 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 Stephenaspis, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
ZacanthoididaePBDB
Diet
carnivorePBDB, for Corynexochida
Life habit
nektobenthicPBDB, for Corynexochida
Motility
actively mobilePBDB, for Corynexochida
Vision
well-developedPBDB, for Zacanthoididae
Environment
marinePBDB, for Trilobita

Time the record covers

At least 3.2 million years on record.

The record covers at least 509.7 Mya to 506.5 Mya. No occurrence read is dated outside 515.3 Mya to 497 Mya.

Cambrian — about 10 of 10 occurrencesCambrian516–515 Mya — about 0.0 occurrences515–515 Mya — about 0.1 occurrences515–514 Mya — about 0.1 occurrences514–513 Mya — about 0.1 occurrences513–513 Mya — about 0.1 occurrences513–512 Mya — about 0.1 occurrences512–511 Mya — about 0.1 occurrences511–511 Mya — about 0.1 occurrences511–510 Mya — about 0.1 occurrences510–509 Mya — about 0.2 occurrences509–509 Mya — about 0.3 occurrences509–508 Mya — about 0.3 occurrences508–507 Mya — about 0.3 occurrences507–507 Mya — about 0.3 occurrences507–506 Mya — about 0.6 occurrences506–506 Mya — about 0.8 occurrences506–505 Mya — about 0.6 occurrences505–504 Mya — about 0.5 occurrences504–504 Mya — about 0.5 occurrences504–503 Mya — about 0.5 occurrences503–502 Mya — about 0.5 occurrences502–502 Mya — about 0.5 occurrences502–501 Mya — about 0.5 occurrences501–500 Mya — about 0.5 occurrences500–500 Mya — about 0.5 occurrences500–499 Mya — about 0.5 occurrences499–498 Mya — about 0.5 occurrences498–498 Mya — about 0.5 occurrences498–497 Mya — about 0.5 occurrences497–497 Mya — about 0.1 occurrences509.7 Mya506.5 Mya515.8 Mya496.5 Mya

10 occurrences of Stephenaspis 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

10 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

4 formations

Pioche Shale — 37.89°N, 114.58°WPioche Shale — 37.94°N, 114.50°WPioche Shale — 37.91°N, 114.41°WPioche Shale — 37.76°N, 114.55°WMount Whyte — 52.83°N, 119.25°WHarkless — 37.36°N, 117.36°WMt. Whyte — 51.42°N, 116.45°W

Loading coastlines…

The named rock units Stephenaspis has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Stephenaspis and its relatives

Cambrian

Where Stephenaspis and its relatives were recorded in the Cambrian.

Found in the same rock

47 taxa

The Paleobiology Database records 10 sites for Stephenaspis, 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

4 references

Each of the 10 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 content0

No picture of Stephenaspis was found. Wikidata and iDigBio were searched and had none.

Wikipedia and 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 Stephenaspis, or no answer at all. This entry cannot say which.

No 3D scan of Stephenaspis 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 itZacanthoididae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Rasetti 1951