Adamussium

Adamussium is a genus of scallops belonging to the family Pectenidae from the Southern Ocean around Antarctica. There are three known species but only one is extant, the Antarctic scallop. Of the two extinct species A. jonkersi is from the Oligocene deposits on King George Island in the South Shetland Islands and the other, A. necopinatum, was described in 2016 from Pliocene marine deposits in the Vestfold Hills of East Antarctica.

Adamussium

Proboscis_worm.JPG : Henry Kaiser, National Science Foundation derivative work: Cwmhiraeth ( talk ) · 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
AdamussiiniPBDB
Diet
suspension feederPBDB, for Pectinidae
Life habit
low-level epifaunalPBDB, for Pectinidae
Motility
facultatively mobilePBDB, for Pectinidae
Vision
limitedPBDB, for Pectinidae
Environment
marinePBDB, for Pectinida

Time the record covers

At least 23 million years on record.

The record covers at least 23.04 Mya to 11.7 ka. No occurrence read is dated outside 27.3 Mya to 0 Mya.

Oligocene — about 1 of 7 occurrencesOligoceneMiocene — about 1 of 7 occurrencesMiocenePliocene — about 0 of 7 occurrencesPleistocene — about 4 of 7 occurrencesPleistocene28–27 Mya — about 0.1 occurrences27–26 Mya — about 0.2 occurrences26–25 Mya — about 0.2 occurrences25–24 Mya — about 0.2 occurrences24–23 Mya — about 0.2 occurrences23–22 Mya — about 0.0 occurrences12–11 Mya — about 0.1 occurrences11–10 Mya — about 0.2 occurrences10–9.3 Mya — about 0.2 occurrences9.3–8.4 Mya — about 0.2 occurrences8.4–7.4 Mya — about 0.2 occurrences7.4–6.5 Mya — about 0.0 occurrences2.8–1.9 Mya — about 2 occurrences1.9–928 ka Mya — about 2 occurrences928 ka–0 Mya — about 1 occurrence23.04 Mya11.7 ka27.8 Mya0 Mya

7 occurrences of Adamussium on record, most of them in the Pleistocene. 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

7 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

2 formations

Fisher Bench — 71.56°S, 67.72°EBay — 62.00°S, 57.65°W

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The named rock units Adamussium has been recovered from, largest first. Drawn where the rock is now, not where it formed. 5 occurrences have no formation on record, which is common for older literature.

Adamussium and its relatives

Pleistocene

Where Adamussium and its relatives were recorded in the Pleistocene.

Found in the same rock

61 taxa

The Paleobiology Database records 6 sites for Adamussium, 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

4 references

Each of the 7 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 Adamussium

Credit
Proboscis_worm.JPG : Henry Kaiser, National Science Foundation derivative work: Cwmhiraeth ( talk )
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Adamussium 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 itAdamussiini through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Thiele 1934