Tetragramma variolare

Tetragramma variolare

via iDigBio · CC BY · via iDigBio. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.

On record

Recorded, not inferred
Sits inside
TetragrammaPBDB
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 27 million years on record.

The record covers at least 121.4 Mya to 93.9 Mya. No occurrence read is dated outside 125.77 Mya to 89.8 Mya.

Early Cretaceous — about 5 of 50 occurrencesEarly CretaceousLate Cretaceous — about 45 of 50 occurrencesLate Cretaceous126–125 Mya — about 0.1 occurrences125–124 Mya — about 0.3 occurrences124–123 Mya — about 0.3 occurrences123–122 Mya — about 0.3 occurrences122–120 Mya — about 0.0 occurrences110–109 Mya — about 0.3 occurrences109–108 Mya — about 0.3 occurrences108–107 Mya — about 0.3 occurrences107–105 Mya — about 0.6 occurrences105–104 Mya — about 0.6 occurrences104–103 Mya — about 0.6 occurrences103–102 Mya — about 0.6 occurrences102–100 Mya — about 2 occurrences100–99 Mya — about 8 occurrences99–98 Mya — about 8 occurrences98–97 Mya — about 8 occurrences97–95 Mya — about 8 occurrences95–94 Mya — about 8 occurrences94–93 Mya — about 1 occurrence93–92 Mya — about 0.3 occurrences92–90 Mya — about 0.3 occurrences90–89 Mya — about 0.1 occurrences121.4 Mya93.9 Mya126.5 Mya89.1 Mya

50 occurrences of Tetragramma variolare on record, most of them in the Late Cretaceous. 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

50 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

14 formations

Grizzle — 50.80°N, 0.18°EGalala — 30.38°N, 33.52°EHalal — 30.37°N, 34.45°EHalal — 30.79°N, 33.48°EWilmington Sands — 50.80°N, 0.18°EPicofrentes — 41.12°N, 2.77°WKanawa Limestones — 10.30°N, 11.38°EWasia — 24.39°N, 47.75°EWasia — 27.95°N, 43.90°EQishn — 14.30°N, 48.49°EMauddud — 25.90°N, 56.07°ESecond niveau de Calcaires à Rudistes — 45.95°N, 1.08°WRisan Aneiza — 31.00°N, 33.50°ECraie glauconieuse — 48.84°N, 0.13°ERaha — 28.65°N, 33.24°ECotinguiba — 11.00°S, 37.31°W

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The named rock units Tetragramma variolare has been recovered from, largest first. Drawn where the rock is now, not where it formed. 19 occurrences have no formation on record, which is common for older literature.

Tetragramma variolare and its relatives

Late Cretaceous

Where Tetragramma variolare and its relatives were recorded in the Late Cretaceous.

Found in the same rock

272 taxa

The Paleobiology Database records 41 sites for Tetragramma variolare, 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

18 references

Each of the 50 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. 6 further references are not listed. 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 content1

Picture of Tetragramma variolare

Source
iDigBio
Credit
via iDigBio
Licence
CC BY
Commercial use
the licence allows it

No 3D scan of Tetragramma variolare 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 itTetragramma through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Brongniart 1822)