Phymechinus

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

On record

Recorded, not inferred
Sits inside
StomechinidaePBDB
Diet
grazer, deposit feederPBDB, for Echinoidea
Life habit
epifaunalPBDB, for Echinoidea
Motility
actively mobilePBDB, for Echinoidea
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 85 million years on record.

The record covers at least 157.9 Mya to 72.2 Mya. No occurrence read is dated outside 159 Mya to 66 Mya.

Late Jurassic — about 3 of 6 occurrencesLate JurassicEarly Cretaceous — about 0 of 6 occurrencesLate Cretaceous — about 3 of 6 occurrencesLate CretaceousPaleocene — about 0 of 6 occurrences161–158 Mya — about 2 occurrences154–151 Mya — about 0.3 occurrences151–148 Mya — about 0.7 occurrences74–71 Mya — about 0.8 occurrences71–67 Mya — about 2 occurrences67–64 Mya — about 0.7 occurrences157.9 Mya72.2 Mya161 Mya64 Mya

6 occurrences of Phymechinus on record, most of them in the Late Jurassic. 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

6 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

Simsima — 24.87°N, 55.95°ESt-Ursanne — 47.37°N, 7.17°EMassenkalk — 48.89°N, 11.94°E

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The named rock units Phymechinus 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.

Phymechinus and its relatives

Late Jurassic

Where Phymechinus and its relatives were recorded in the Late Jurassic.

Found in the same rock

219 taxa

The Paleobiology Database records 3 sites for Phymechinus, 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 6 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 Phymechinus 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 Phymechinus, or no answer at all. This entry cannot say which.

No 3D scan of Phymechinus 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 itStomechinidae through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Desor 1858