Dallarca

Dallarca

via iDigBio · CC0 · via iDigBio. 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
AnadarinaePBDB
Diet
suspension feederPBDB, for Anadarinae
Life habit
semi-infaunalPBDB, for Anadarinae
Motility
facultatively mobilePBDB, for Anadarinae
Vision
limitedPBDB, for Arcidae
Environment
lagoonal,coastal,inner shelf,outer shelf,oceanic,brackish,freshwaterPBDB, for Arcidae

Time the record covers

At least 12 million years on record.

The record covers at least 15.98 Mya to 3.6 Mya. No occurrence read is dated outside 23.04 Mya to 2.58 Mya.

Oligocene — about 0 of 64 occurrencesMiocene — about 61 of 64 occurrencesMiocenePliocene — about 3 of 64 occurrencesPliocenePleistocene — about 0 of 64 occurrences24–23 Mya — about 0.4 occurrences23–22 Mya — about 1 occurrence22–21 Mya — about 1 occurrence21–21 Mya — about 1 occurrence21–20 Mya — about 1 occurrence20–19 Mya — about 1 occurrence19–19 Mya — about 1 occurrence19–18 Mya — about 1 occurrence18–17 Mya — about 1 occurrence17–16 Mya — about 1 occurrence16–16 Mya — about 2 occurrences16–15 Mya — about 2 occurrences15–14 Mya — about 2 occurrences14–14 Mya — about 4 occurrences14–13 Mya — about 8 occurrences13–12 Mya — about 8 occurrences12–11 Mya — about 6 occurrences11–11 Mya — about 2 occurrences11–9.9 Mya — about 2 occurrences9.9–9.2 Mya — about 2 occurrences9.2–8.5 Mya — about 2 occurrences8.5–7.8 Mya — about 2 occurrences7.8–7.1 Mya — about 2 occurrences7.1–6.4 Mya — about 1 occurrence6.4–5.7 Mya — about 1 occurrence5.7–4.9 Mya — about 0.8 occurrences4.9–4.2 Mya — about 0.3 occurrences4.2–3.5 Mya — about 0.4 occurrences3.5–2.8 Mya — about 2 occurrences2.8–2.1 Mya — about 0.5 occurrences15.98 Mya3.6 Mya23.5 Mya2.1 Mya

64 occurrences of Dallarca on record, most of them in the Miocene. 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

64 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

Choptank — 38.53°N, 76.52°WChoptank — 38.39°N, 76.57°WChoptank — 38.36°N, 76.48°WChoptank — 38.17°N, 76.80°WChoptank — 38.62°N, 76.12°WChoptank — 38.38°N, 76.38°WKirkwood — 39.36°N, 74.42°WKirkwood — 39.00°N, 75.12°WSt Marys — 38.16°N, 76.45°WSt Marys — 38.17°N, 76.44°WSt Marys — 38.26°N, 76.42°WSt Marys — 38.36°N, 76.39°WSt Marys — 38.27°N, 76.15°WCalvert — 39.20°N, 75.60°WCalvert — 38.67°N, 76.53°WCalvert — 38.63°N, 76.51°WSt Mary's — 38.36°N, 76.39°WSt Mary's — 37.66°N, 76.75°WSaint Marys — 38.17°N, 76.44°WSaint Marys — 37.86°N, 76.84°WSaint Marys — 38.18°N, 76.45°WEastover — 37.22°N, 76.93°WEastover — 37.23°N, 76.96°WJackson Bluff — 30.39°N, 84.64°WPungo River — 35.40°N, 76.80°W

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The named rock units Dallarca has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Dallarca and its relatives

Miocene

Where Dallarca and its relatives were recorded in the Miocene.

Found in the same rock

415 taxa

The Paleobiology Database records 45 sites for Dallarca, 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

9 references

Each of the 64 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 Dallarca

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Dallarca 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.

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itAnadarinae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Ward 1992