Tetragregnon

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

On record

Recorded, not inferred
Sits inside
TetratormentidaePBDB
Diet
omnivorePBDB, for Radiolaria
Life habit
planktonicPBDB, for Radiolaria
Motility
passively mobilePBDB, for Radiolaria
Environment
marinePBDB, for Radiolaria

Time the record covers

At least 92 million years on record.

The record covers at least 346.7 Mya to 254.14 Mya. No occurrence read is dated outside 358.86 Mya to 251.902 Mya.

Devonian — about 0 of 22 occurrencesCarboniferous — about 1 of 22 occurrencesCarboniferousPermian — about 21 of 22 occurrencesPermianEarly Triassic — about 0 of 22 occurrences361–357 Mya — about 0.1 occurrences357–354 Mya — about 0.3 occurrences354–350 Mya — about 0.3 occurrences350–346 Mya — about 0.3 occurrences261–257 Mya — about 0.5 occurrences257–253 Mya — about 7 occurrences253–250 Mya — about 14 occurrences346.7 Mya254.14 Mya361 Mya250 Mya

22 occurrences of Tetragregnon on record, most of them in the Permian. 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

22 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

Dalong — 22.27°N, 107.69°EDalong — 22.36°N, 107.43°EChangxing — 31.10°N, 119.73°EGufeng — 24.20°N, 109.43°EHashikadani — 35.68°N, 136.58°E

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The named rock units Tetragregnon 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.

Tetragregnon and its relatives

Permian

Where Tetragregnon and its relatives were recorded in the Permian.

Found in the same rock

170 taxa

The Paleobiology Database records 22 sites for Tetragregnon, 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

6 references

Each of the 22 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content0

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

No 3D scan of Tetragregnon 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 itTetratormentidae through timeFormations of the PermianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ormiston and Lane 1976