Anomalodesmata

Anomalodesmata is an superorder of saltwater clams, marine bivalve molluscs. This grouping was formerly recognised as a taxonomic subclass. It is called a superorder in the current World Register of Marine Species, despite having no orders, to parallel it with sister taxon Imparidentia, which does have orders.

Anomalodesmata

William Wood (1774-1857) · 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
EuheterodontaPBDB
Diet
suspension feederPBDB, for Bivalvia
Life habit
infaunalPBDB, for Bivalvia
Motility
facultatively mobilePBDB, for Bivalvia
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 233 million years on record.

The record covers at least 382.31 Mya to 149.2 Mya. No occurrence read is dated outside 393.47 Mya to 145.06 Mya.

Devonian — about 1 of 18 occurrencesDevonianCarboniferous — about 1 of 18 occurrencesCarboniferousPermian — about 6 of 18 occurrencesPermianEarly Triassic — about 0 of 18 occurrencesMiddle Triassic — about 1 of 18 occurrencesLate Triassic — about 0 of 18 occurrencesEarly Jurassic — about 0 of 18 occurrencesMiddle Jurassic — about 0 of 18 occurrencesLate Jurassic — about 9 of 18 occurrencesEarly Cretaceous — about 0 of 18 occurrences398–390 Mya — about 0.3 occurrences390–381 Mya — about 0.7 occurrences330–321 Mya — about 0.1 occurrences321–312 Mya — about 0.5 occurrences312–304 Mya — about 0.4 occurrences304–295 Mya — about 0.8 occurrences295–286 Mya — about 2 occurrences286–278 Mya — about 2 occurrences278–269 Mya — about 0.9 occurrences252–243 Mya — about 1 occurrence166–157 Mya — about 5 occurrences157–149 Mya — about 3 occurrences149–140 Mya — about 0.9 occurrences382.31 Mya149.2 Mya398 Mya140 Mya

18 occurrences of Anomalodesmata on record, most of them in the Late Jurassic. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

18 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

6 formations

Kap Leslie — 70.48°N, 21.97°WCerros de Cuevitas — 23.53°S, 69.96°WCerro El Arbol — 24.13°S, 69.50°WAlcobaca — 38.42°N, 9.22°WPiauí — 4.72°S, 42.69°WCaerace — 45.05°N, 29.06°E

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The named rock units Anomalodesmata has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Anomalodesmata and its relatives

Late Jurassic

Where Anomalodesmata and its relatives were recorded in the Late Jurassic.

Found in the same rock

177 taxa

The Paleobiology Database records 17 sites for Anomalodesmata, 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

5 references

Each of the 18 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 Anomalodesmata

Credit
William Wood (1774-1857)
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itEuheterodonta through timeFormations of the Late JurassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Dall 1889)