Actinocythereis

Actinocythereis

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
TrachyleberididaePBDB
Diet
detritivore, grazerPBDB, for Podocopida
Life habit
epifaunalPBDB, for Podocopida
Motility
actively mobilePBDB, for Ostracoda
Vision
limitedPBDB, for Ostracoda
Environment
marinePBDB, for Ostracoda

Time the record covers

At least 63 million years on record.

The record covers at least 66 Mya to 2.58 Mya. No occurrence read is dated outside 72.2 Mya to 774 ka.

Late Cretaceous — about 4 of 61 occurrencesLate CretaceousPaleocene — about 33 of 61 occurrencesPaleoceneEocene — about 12 of 61 occurrencesEoceneOligocene — about 4 of 61 occurrencesOligoceneMiocene — about 3 of 61 occurrencesMiocenePliocene — about 4 of 61 occurrencesPleistocene — about 1 of 61 occurrences74–71 Mya — about 0.7 occurrences71–69 Mya — about 2 occurrences69–66 Mya — about 2 occurrences66–64 Mya — about 17 occurrences64–61 Mya — about 16 occurrences56–54 Mya — about 0.4 occurrences54–52 Mya — about 0.4 occurrences52–49 Mya — about 0.4 occurrences49–47 Mya — about 0.6 occurrences47–44 Mya — about 0.7 occurrences44–42 Mya — about 0.7 occurrences42–39 Mya — about 1 occurrence39–37 Mya — about 2 occurrences37–34 Mya — about 5 occurrences34–32 Mya — about 1 occurrence32–29 Mya — about 0.7 occurrences29–27 Mya — about 0.8 occurrences27–25 Mya — about 1 occurrence25–22 Mya — about 0.8 occurrences22–20 Mya — about 0.5 occurrences20–17 Mya — about 0.9 occurrences17–15 Mya — about 0.7 occurrences15–12 Mya — about 0.6 occurrences12–9.8 Mya — about 0.1 occurrences7.4–4.9 Mya — about 1.0 occurrences4.9–2.5 Mya — about 3 occurrences2.5–0 Mya — about 0.9 occurrences66 Mya2.58 Mya74 Mya0 Mya

61 occurrences of Actinocythereis on record, most of them in the Paleocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

61 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

13 formations

Jagüel — 38.85°S, 67.87°WRoca — 38.85°S, 67.87°WRoca — 37.56°S, 69.83°WRoca — 38.96°S, 67.59°WYazoo — 31.92°N, 88.40°WYorktown — 35.36°N, 76.82°WTuxpan — 20.47°N, 97.20°WCaloosahatchee — 26.89°N, 82.01°WRosefield — 31.89°N, 92.00°WHuasteca — 21.50°N, 98.03°WCastle Hayne — 35.01°N, 77.57°WAshley Mudstone — 44.80°S, 170.98°ECapay — 39.21°N, 121.87°WLa Colonia — 42.83°S, 68.45°WImbé — 30.66°S, 49.25°W

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The named rock units Actinocythereis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Actinocythereis and its relatives

Paleocene

Where Actinocythereis and its relatives were recorded in the Paleocene.

Found in the same rock

1,040 taxa

The Paleobiology Database records 38 sites for Actinocythereis, 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 61 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 Actinocythereis

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

No 3D scan of Actinocythereis 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 itTrachyleberididae through timeFormations of the PaleoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Puri 1953