Amalda

Amalda is a genus of medium-sized sea snails, a marine gastropod mollusc in the family Ancillariidae, the olives and allies.

Amalda

GrahamBould · Public Domain · 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
AncillariidaePBDB
Diet
carnivorePBDB, for Neogastropoda
Life habit
epifaunalPBDB, for Neogastropoda
Motility
actively mobilePBDB, for Neogastropoda
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 47 million years on record.

The record covers at least 48.07 Mya to 129 ka. No occurrence read is dated outside 56 Mya to 11.7 ka.

Paleocene — about 0 of 260 occurrencesEocene — about 87 of 260 occurrencesEoceneOligocene — about 28 of 260 occurrencesOligoceneMiocene — about 123 of 260 occurrencesMiocenePliocene — about 15 of 260 occurrencesPleistocene — about 7 of 260 occurrences57–55 Mya — about 5 occurrences55–53 Mya — about 12 occurrences53–51 Mya — about 12 occurrences51–50 Mya — about 12 occurrences50–48 Mya — about 11 occurrences48–46 Mya — about 6 occurrences46–44 Mya — about 6 occurrences44–42 Mya — about 6 occurrences42–40 Mya — about 4 occurrences40–38 Mya — about 2 occurrences38–36 Mya — about 5 occurrences36–34 Mya — about 5 occurrences34–32 Mya — about 2 occurrences32–30 Mya — about 0.9 occurrences30–29 Mya — about 0.9 occurrences29–27 Mya — about 4 occurrences27–25 Mya — about 11 occurrences25–23 Mya — about 10 occurrences23–21 Mya — about 6 occurrences21–19 Mya — about 14 occurrences19–17 Mya — about 19 occurrences17–15 Mya — about 19 occurrences15–13 Mya — about 21 occurrences13–11 Mya — about 18 occurrences11–9.5 Mya — about 9 occurrences9.5–7.6 Mya — about 9 occurrences7.6–5.7 Mya — about 7 occurrences5.7–3.8 Mya — about 11 occurrences3.8–1.9 Mya — about 7 occurrences1.9–0 Mya — about 5 occurrences48.07 Mya129 ka57 Mya0 Mya

260 occurrences of Amalda 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

260 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

55 formations

Ihungia — 40.27°S, 176.22°EIhungia — 40.35°S, 176.28°ENaseby Greensand — 44.98°S, 170.28°ENaseby Greensand — 45.02°S, 170.15°ESables de Cuise — 49.60°N, 3.38°EShimajiri — 26.20°N, 127.78°EShimajiri — 26.13°N, 127.72°EShimajiri — 26.28°N, 127.78°EShimajiri — 26.13°N, 127.78°EShimajiri — 26.37°N, 127.97°ERifle Butts — 45.03°S, 170.02°ERifle Butts — 45.12°S, 170.93°EBanc à verrins — 48.85°N, 1.94°EOtekaike Limestone — 44.24°S, 170.69°EOtekaike Limestone — 45.79°S, 170.51°EOtekaike Limestone — 44.84°S, 170.52°ETermofourà — 45.05°N, 7.80°ETermofourà — 45.04°N, 7.77°EMaraldi Sandstone — 46.22°N, 12.80°EMount Brown — 44.16°S, 171.10°EMount Brown — 44.03°S, 170.72°EKasaba — 40.66°N, 39.90°EYonabaru — 26.21°N, 127.74°EYonabaru — 26.22°N, 127.78°EOtahuhu — 37.21°S, 174.90°EOtahuhu — 36.95°S, 174.80°ETapui Glauconitic Sandstone — 44.97°S, 170.58°ETokama Siltstone — 44.24°S, 170.69°ETokama Siltstone — 44.31°S, 171.22°EAlexandria — 33.97°S, 25.62°EAlexandria — 33.82°S, 25.65°EBerada — 51.10°N, 5.80°ECurchia — 44.76°N, 22.47°EWaiomio — 40.03°S, 175.48°EBaldissero — 45.03°N, 7.76°EBaldissero — 45.02°N, 7.71°EShinzato — 26.12°N, 127.72°EShinzato — 26.18°N, 127.81°EWaihao Greensand — 44.78°S, 171.17°EOtaio Gorge Sandstone — 44.38°S, 170.99°EOtaio Gorge Sandstone — 44.52°S, 170.93°EUçarsu — 40.66°N, 39.90°E

Loading coastlines…

The named rock units Amalda has been recovered from, largest first. Drawn where the rock is now, not where it formed. 31 further formations hold fewer occurrences each and are not listed. 102 occurrences have no formation on record, which is common for older literature.

Amalda and its relatives

Miocene

Where Amalda and its relatives were recorded in the Miocene.

Found in the same rock

1,870 taxa

The Paleobiology Database records 159 sites for Amalda, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

55 references

Each of the 260 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. 43 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 Amalda

Credit
GrahamBould
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Amalda 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 itAncillariidae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Adams and Adams 1853