Austrotoma

Austrotoma is a genus of sea snails, marine gastropod mollusks, in the family Pseudomelatomidae. It has also been placed in the family Pseudotomidae.

Austrotoma

Auckland War Memorial Museum · CC BY 4.0 · 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
PseudomelatomidaePBDB
Diet
carnivorePBDB, for Conoidea
Life habit
epifaunalPBDB, for Conoidea
Motility
actively mobilePBDB, for Conoidea
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 25 million years on record.

The record covers at least 41.03 Mya to 15.98 Mya. No occurrence read is dated outside 48.07 Mya to 11.63 Mya.

Eocene — about 26 of 40 occurrencesEoceneOligocene — about 5 of 40 occurrencesOligoceneMiocene — about 9 of 40 occurrencesMiocene49–48 Mya — about 0.9 occurrences48–46 Mya — about 2 occurrences46–45 Mya — about 2 occurrences45–44 Mya — about 2 occurrences44–42 Mya — about 2 occurrences42–41 Mya — about 2 occurrences41–40 Mya — about 4 occurrences40–39 Mya — about 4 occurrences39–37 Mya — about 3 occurrences37–36 Mya — about 1 occurrence36–35 Mya — about 1 occurrence35–34 Mya — about 1 occurrence27–26 Mya — about 1 occurrence26–25 Mya — about 1 occurrence25–24 Mya — about 1 occurrence24–22 Mya — about 0.7 occurrences22–21 Mya — about 1.0 occurrences21–20 Mya — about 2 occurrences20–18 Mya — about 2 occurrences18–17 Mya — about 2 occurrences17–16 Mya — about 2 occurrences16–15 Mya — about 0.4 occurrences15–13 Mya — about 0.3 occurrences13–12 Mya — about 0.3 occurrences12–11 Mya — about 0.1 occurrences41.03 Mya15.98 Mya48.8 Mya10.9 Mya

40 occurrences of Austrotoma on record, most of them in the Eocene. 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

40 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

9 formations

La Meseta — 64.23°S, 56.65°WLa Meseta — 64.25°S, 56.70°WLa Meseta — 64.22°S, 56.61°WNaseby Greensand — 44.98°S, 170.28°ENaseby Greensand — 45.02°S, 170.12°EMount Brown — 44.16°S, 171.10°EMount Brown — 44.03°S, 170.72°EOtekaike Limestone — 45.79°S, 170.51°EOtekaike Limestone — 44.79°S, 170.51°ERifle Butts — 45.12°S, 170.93°EIhungia — 40.35°S, 176.28°ESubmeseta — 64.24°S, 56.66°WWaikari — 44.11°S, 171.12°EMonte Leon — 50.32°S, 68.86°W

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The named rock units Austrotoma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.

Austrotoma and its relatives

Eocene

Where Austrotoma and its relatives were recorded in the Eocene.

Found in the same rock

233 taxa

The Paleobiology Database records 30 sites for Austrotoma, 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

7 references

Each of the 40 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 Austrotoma

Credit
Auckland War Memorial Museum
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Austrotoma 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.

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 itPseudomelatomidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Finlay 1924)