Trochactaeon

Trochactaeon is an extinct genus of fossil sea snails, marine gastropod mollusks in the family Acteonellidae. The genus was named in 1863.

Trochactaeon

H. Zell · CC BY-SA 3.0 · via Wikipedia/Commons. 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
ActeonellinaePBDB
Diet
carnivorePBDB, for Acteonidae
Life habit
epifaunalPBDB, for Acteonidae
Motility
actively mobilePBDB, for Acteonidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 49 million years on record.

The record covers at least 121.4 Mya to 72.2 Mya. No occurrence read is dated outside 125.77 Mya to 66 Mya.

Early Cretaceous — about 12 of 123 occurrencesEarly CretaceousLate Cretaceous — about 111 of 123 occurrencesLate CretaceousPaleocene — about 0 of 123 occurrences127–125 Mya — about 0.4 occurrences125–123 Mya — about 0.9 occurrences123–121 Mya — about 0.7 occurrences110–108 Mya — about 0.5 occurrences108–106 Mya — about 0.6 occurrences106–104 Mya — about 3 occurrences104–102 Mya — about 3 occurrences102–100 Mya — about 3 occurrences100–98 Mya — about 0.8 occurrences98–96 Mya — about 0.8 occurrences96–94 Mya — about 1 occurrence94–92 Mya — about 9 occurrences92–90 Mya — about 9 occurrences90–88 Mya — about 0.8 occurrences88–86 Mya — about 1 occurrence86–83 Mya — about 8 occurrences83–81 Mya — about 4 occurrences81–79 Mya — about 4 occurrences79–77 Mya — about 4 occurrences77–75 Mya — about 4 occurrences75–73 Mya — about 4 occurrences73–71 Mya — about 13 occurrences71–69 Mya — about 19 occurrences69–67 Mya — about 19 occurrences67–65 Mya — about 8 occurrences121.4 Mya72.2 Mya127 Mya65 Mya

123 occurrences of Trochactaeon 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

123 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

24 formations

Guinea Corn — 18.17°N, 77.43°WPozas — 18.45°N, 66.40°WPozas — 18.23°N, 66.40°WPozas — 18.31°N, 66.54°WPozas — 18.28°N, 66.58°WPozas — 18.24°N, 66.54°W"Titanosarcolites limestone" — 18.23°N, 77.91°W"Titanosarcolites limestone" — 18.32°N, 78.25°WCardenas — 20.10°N, 99.20°WCardenas — 20.30°N, 98.80°WRedding — 40.60°N, 122.20°WRedding — 40.70°N, 122.17°WRedding — 40.59°N, 122.00°WHochmoos — 47.61°N, 13.48°ELadd — 33.72°N, 117.64°WHabana — 22.80°N, 81.30°WHabana — 22.20°N, 79.80°WDevils River Limestone — 29.50°N, 101.23°WDevils River Limestone — 29.68°N, 101.17°WDevils River Limestone — 39.00°N, 101.00°WMelones — 17.99°N, 67.75°WMelones — 18.01°N, 67.17°WEl Rayo — 18.07°N, 66.98°WEl Rayo — 18.06°N, 67.11°WCotui — 18.05°N, 67.07°WCotui Limestone — 18.08°N, 67.09°WUgod — 46.98°N, 17.28°EWata — 28.65°N, 33.24°EWata — 29.67°N, 34.50°EUmzamba — 31.10°S, 30.17°EEdwards Limestone — 30.05°N, 99.14°WMaravillas — 18.06°N, 66.35°WBranderfleck — 47.67°N, 12.17°ESabana Grande — 18.08°N, 67.09°WGrès inférieur et assises à Orbitolines — 38.73°N, 9.47°WBaba Darves — 36.78°N, 70.03°Emiddle Abu Roash — 30.05°N, 31.07°EWilliams — 33.73°N, 117.64°W

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The named rock units Trochactaeon has been recovered from, largest first. Drawn where the rock is now, not where it formed. 21 occurrences have no formation on record, which is common for older literature.

Trochactaeon and its relatives

Late Cretaceous

Where Trochactaeon and its relatives were recorded in the Late Cretaceous.

Found in the same rock

273 taxa

The Paleobiology Database records 100 sites for Trochactaeon, 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

20 references

Each of the 123 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. 8 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 Trochactaeon

Credit
H. Zell
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Trochactaeon 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.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itActeonellinae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Meek 1863