Archiacia

Archiacia

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
ArchiaciidaePBDB
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 19 million years on record.

The record covers at least 119.57 Mya to 100.5 Mya. No occurrence read is dated outside 121.4 Mya to 93.9 Mya.

Early Cretaceous — about 3 of 30 occurrencesEarly CretaceousLate Cretaceous — about 27 of 30 occurrencesLate Cretaceous122–121 Mya — about 0.4 occurrences121–120 Mya — about 1 occurrence120–119 Mya — about 0.5 occurrences111–110 Mya — about 0.1 occurrences110–109 Mya — about 0.3 occurrences109–108 Mya — about 0.3 occurrences108–107 Mya — about 0.3 occurrences107–106 Mya — about 0.1 occurrences101–100 Mya — about 2 occurrences100–99 Mya — about 4 occurrences99–98 Mya — about 4 occurrences98–97 Mya — about 4 occurrences97–96 Mya — about 4 occurrences96–95 Mya — about 4 occurrences95–94 Mya — about 4 occurrences94–93 Mya — about 2 occurrences119.57 Mya100.5 Mya122 Mya93.3 Mya

30 occurrences of Archiacia on record. 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

30 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

Galala — 29.67°N, 34.50°EGalala — 30.38°N, 33.52°ERaha — 29.13°N, 33.28°EB3/C1 — 45.93°N, 0.98°WHalal — 30.79°N, 33.48°E

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The named rock units Archiacia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 25 occurrences have no formation on record, which is common for older literature.

Found in the same rock

134 taxa

The Paleobiology Database records 21 sites for Archiacia, 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

8 references

Each of the 30 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 content1

Picture of Archiacia

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

No 3D scan of Archiacia 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 itArchiaciidae through timeThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Agassiz 1847