Frizzellus irregularis

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

On record

Recorded, not inferred
Sits inside
FrizzellusPBDB
Diet
detritivorePBDB, for Holothuroidea
Life habit
shallow infaunalPBDB, for Holothuroidea
Motility
actively mobilePBDB, for Holothuroidea
Vision
blindPBDB, for Holothuroidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 31 million years on record.

The record covers at least 199.5 Mya to 168.2 Mya. No occurrence read is dated outside 201.4 Mya to 165.3 Mya.

Late Triassic — about 0 of 3 occurrencesEarly Jurassic — about 1 of 3 occurrencesEarly JurassicMiddle Jurassic — about 2 of 3 occurrencesMiddle Jurassic202–201 Mya — about 0.3 occurrences201–200 Mya — about 0.7 occurrences200–198 Mya — about 0.1 occurrences168–167 Mya — about 0.8 occurrences167–166 Mya — about 0.9 occurrences166–165 Mya — about 0.4 occurrences199.5 Mya168.2 Mya202.1 Mya164.6 Mya

3 occurrences of Frizzellus irregularis on record, most of them in the Middle 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

3 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

Forest Marble — 51.85°N, 0.10°WFuller's Earth Clay — 50.61°N, 2.51°WScheibelberg — 47.62°N, 12.58°E

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

Frizzellus irregularis and its relatives

Middle Jurassic

Where Frizzellus irregularis and its relatives were recorded in the Middle Jurassic.

Found in the same rock

80 taxa

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

No 3D scan of Frizzellus irregularis 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 itFrizzellus through timeFormations of the Middle JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Hampton 1958