Hesslandona

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

On record

Recorded, not inferred
Sits inside
HesslandonidaePBDB
Motility
actively mobilePBDB, for Arthropoda

Time the record covers

At least 9.5 million years on record.

The record covers at least 506.5 Mya to 497 Mya. No occurrence read is dated outside 516.2 Mya to 493.6 Mya.

Cambrian — about 5 of 5 occurrencesCambrian517–516 Mya — about 0.0 occurrences516–515 Mya — about 0.1 occurrences515–514 Mya — about 0.1 occurrences514–514 Mya — about 0.1 occurrences514–513 Mya — about 0.1 occurrences513–512 Mya — about 0.1 occurrences512–511 Mya — about 0.1 occurrences511–510 Mya — about 0.1 occurrences510–510 Mya — about 0.1 occurrences510–509 Mya — about 0.1 occurrences509–508 Mya — about 0.1 occurrences508–507 Mya — about 0.1 occurrences507–506 Mya — about 0.1 occurrences497–496 Mya — about 0.9 occurrences496–495 Mya — about 0.9 occurrences495–495 Mya — about 0.9 occurrences495–494 Mya — about 0.9 occurrences494–493 Mya — about 0.3 occurrences506.5 Mya497 Mya516.7 Mya493.1 Mya

5 occurrences of Hesslandona 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

5 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

3 formations

Alum Shale — 58.50°N, 13.17°EAlum Shale — 58.58°N, 13.38°EAlum — 58.58°N, 13.38°EAlum — 56.27°N, 16.40°ELower Comley — 52.65°N, 2.73°W

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

Hesslandona and its relatives

Cambrian

Where Hesslandona and its relatives were recorded in the Cambrian.

Found in the same rock

25 taxa

The Paleobiology Database records 5 sites for Hesslandona, 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

2 references

Each of the 5 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 Hesslandona 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 Hesslandona, or no answer at all. This entry cannot say which.

No 3D scan of Hesslandona was found in Smithsonian Open Access and Sketchfab.

MorphoSource 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 itHesslandonidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Mueller 1964