Actinacis

Searched as Actinacis porosa. The Paleobiology Database treats Actinacis as the accepted name.

Actinacis

via iDigBio · CC0 · 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
ActinacididaePBDB
Diet
photosymbiotic, suspension feederPBDB, for Actinacididae
Life habit
epifaunal, colonial, clonalPBDB, for Actinacididae
Motility
stationary, attachedPBDB, for Actinacididae
Vision
blindPBDB, for Anthozoa
Environment
marinePBDB, for Scleractinia

Time the record covers

At most 18 million years on record.

Every occurrence read is dated to somewhere between 66 Mya and 48.07 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Late Cretaceous — about 0 of 2 occurrencesPaleocene — about 1 of 2 occurrencesPaleoceneEocene — about 1 of 2 occurrencesEocene67–66 Mya — about 0.0 occurrences66–65 Mya — about 0.1 occurrences65–65 Mya — about 0.1 occurrences65–64 Mya — about 0.1 occurrences64–63 Mya — about 0.1 occurrences63–63 Mya — about 0.1 occurrences63–62 Mya — about 0.1 occurrences62–61 Mya — about 0.1 occurrences61–61 Mya — about 0.1 occurrences61–60 Mya — about 0.1 occurrences60–60 Mya — about 0.1 occurrences60–59 Mya — about 0.1 occurrences59–58 Mya — about 0.1 occurrences58–58 Mya — about 0.1 occurrences58–57 Mya — about 0.1 occurrences57–56 Mya — about 0.1 occurrences56–56 Mya — about 0.1 occurrences56–55 Mya — about 0.1 occurrences55–55 Mya — about 0.1 occurrences55–54 Mya — about 0.1 occurrences54–53 Mya — about 0.1 occurrences53–53 Mya — about 0.1 occurrences53–52 Mya — about 0.1 occurrences52–51 Mya — about 0.1 occurrences51–51 Mya — about 0.1 occurrences51–50 Mya — about 0.1 occurrences50–49 Mya — about 0.1 occurrences49–49 Mya — about 0.1 occurrences49–48 Mya — about 0.1 occurrences48–48 Mya — about 0.0 occurrences66.5 Mya47.6 Mya

2 occurrences of Actinacis on record, most of them in the Paleocene. 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

2 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.

Actinacis and its relatives

Paleocene

Where Actinacis and its relatives were recorded in the Paleocene.

Found in the same rock

1,117 taxa

The Paleobiology Database records 117 sites for Actinacis, 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

1 reference

Each of the 2 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 the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Actinacis

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Actinacis 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 itActinacididae through timeFormations of the PaleoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. d'Orbigny 1849