Dorsanum

Dorsanum is a genus of sea snails, marine gastropod mollusks in the subfamily Dorsaninae of the family Nassariidae, the Nassa mud snails or dog whelks.

Dorsanum

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
DorsaninaePBDB
Diet
carnivorePBDB, for Nassariidae
Life habit
low-level epifaunalPBDB, for Nassariidae
Motility
slow-movingPBDB, for Nassariidae
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 55 million years on record.

The record covers at least 56 Mya to 11.7 ka. No occurrence read is dated outside 59.24 Mya to 0 Mya.

Paleocene — about 1 of 50 occurrencesEocene — about 20 of 50 occurrencesEoceneOligocene — about 0 of 50 occurrencesMiocene — about 28 of 50 occurrencesMiocenePliocene — about 0 of 50 occurrencesPleistocene — about 0 of 50 occurrences60–58 Mya — about 0.3 occurrences58–56 Mya — about 0.6 occurrences56–54 Mya — about 0.5 occurrences54–52 Mya — about 0.5 occurrences52–50 Mya — about 0.5 occurrences50–48 Mya — about 0.5 occurrences48–46 Mya — about 2 occurrences46–44 Mya — about 2 occurrences44–42 Mya — about 2 occurrences42–40 Mya — about 3 occurrences40–38 Mya — about 6 occurrences38–36 Mya — about 2 occurrences36–34 Mya — about 0.5 occurrences34–32 Mya — about 0.1 occurrences24–22 Mya — about 2 occurrences22–20 Mya — about 5 occurrences20–18 Mya — about 5 occurrences18–16 Mya — about 5 occurrences16–14 Mya — about 0.4 occurrences14–12 Mya — about 3 occurrences12–10 Mya — about 3 occurrences10–8.1 Mya — about 2 occurrences8.1–6.0 Mya — about 1 occurrence6.0–4.0 Mya — about 0.4 occurrences2.0–0 Mya — about 1 occurrence56 Mya11.7 ka60 Mya0 Mya

50 occurrences of Dorsanum on record, most of them in the Miocene. The Paleobiology Database records this as a living group. 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

50 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

15 formations

Weches — 30.00°N, 97.15°WWeches — 30.23°N, 97.52°WWeches — 31.21°N, 96.02°WWeches — 31.00°N, 96.83°WWeches — 31.25°N, 96.12°WTermofourà — 45.05°N, 7.80°EStone City — 30.53°N, 96.69°WFalun de Saucats — 44.66°N, 0.57°WTalara — 5.13°S, 81.17°WTalara — 5.87°S, 80.62°WParacas — 13.91°S, 76.37°WParacas — 13.91°S, 76.34°WSabinetown Bluff — 31.40°N, 93.71°WSaman — 4.84°S, 80.77°WVerdun — 4.74°S, 81.30°WParinas — 4.68°S, 81.33°WGosport Sand — 31.54°N, 87.52°WCrockett — 30.67°N, 96.37°WSkalica — 48.48°N, 16.65°EWerder — 52.98°N, 9.06°EPendleton — 31.47°N, 93.50°W

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The named rock units Dorsanum has been recovered from, largest first. Drawn where the rock is now, not where it formed. 20 occurrences have no formation on record, which is common for older literature.

Dorsanum and its relatives

Miocene

Where Dorsanum and its relatives were recorded in the Miocene.

Found in the same rock

1,181 taxa

The Paleobiology Database records 31 sites for Dorsanum, 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 50 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 Dorsanum

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

No 3D scan of Dorsanum 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 itDorsaninae through timeFormations of the MioceneThe world it lived on

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