Dallocardia

Dallocardia is a genus of cockles in the subfamily Trachycardiinae. It was originally described as a subgenus of Trachycardium, but was moved to its own genus in 2012.

Dallocardia

Veronidae · 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
TrachycardiinaePBDB
Diet
suspension feederPBDB
Life habit
infaunalPBDB
Motility
facultatively mobilePBDB
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 33 million years on record.

The record covers at least 33.9 Mya to 11.7 ka. No occurrence read is dated outside 37.71 Mya to 0 Mya.

Eocene — about 1 of 336 occurrencesEoceneOligocene — about 10 of 336 occurrencesOligoceneMiocene — about 178 of 336 occurrencesMiocenePliocene — about 68 of 336 occurrencesPleistocene — about 76 of 336 occurrences38–37 Mya — about 0.1 occurrences37–36 Mya — about 0.3 occurrences36–35 Mya — about 0.3 occurrences35–33 Mya — about 0.3 occurrences33–32 Mya — about 0.2 occurrences32–31 Mya — about 0.2 occurrences31–29 Mya — about 0.2 occurrences29–28 Mya — about 0.2 occurrences28–27 Mya — about 1.0 occurrences27–26 Mya — about 3 occurrences26–24 Mya — about 3 occurrences24–23 Mya — about 3 occurrences23–22 Mya — about 14 occurrences22–21 Mya — about 14 occurrences21–19 Mya — about 15 occurrences19–18 Mya — about 15 occurrences18–17 Mya — about 15 occurrences17–15 Mya — about 17 occurrences15–14 Mya — about 20 occurrences14–13 Mya — about 5 occurrences13–12 Mya — about 2 occurrences12–10 Mya — about 12 occurrences10–9.0 Mya — about 12 occurrences9.0–7.7 Mya — about 12 occurrences7.7–6.4 Mya — about 13 occurrences6.4–5.1 Mya — about 14 occurrences5.1–3.8 Mya — about 21 occurrences3.8–2.6 Mya — about 44 occurrences2.6–1.3 Mya — about 17 occurrences1.3–0 Mya — about 62 occurrences33.9 Mya11.7 ka38.5 Mya0 Mya

336 occurrences of Dallocardia 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

336 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

60 formations

Vaqueros — 34.04°N, 120.04°WVaqueros — 33.54°N, 117.78°WVaqueros — 33.68°N, 117.76°WVaqueros — 33.55°N, 117.82°WVaqueros — 33.77°N, 117.89°WVaqueros — 33.70°N, 117.71°WVaqueros — 33.64°N, 117.59°WVaqueros — 34.33°N, 118.83°WVaqueros — 34.33°N, 119.03°WVaqueros — 34.38°N, 118.84°WVaqueros — 34.32°N, 119.08°WVaqueros — 34.35°N, 118.92°WVaqueros — 34.45°N, 118.92°WVaqueros — 34.42°N, 119.27°WVaqueros — 34.52°N, 120.43°WVaqueros — 34.53°N, 120.35°WVaqueros — 34.58°N, 120.16°WVaqueros — 34.98°N, 120.21°WVaqueros — 35.27°N, 120.60°WVaqueros — 35.53°N, 120.76°WVaqueros — 35.30°N, 120.15°WVaqueros — 35.31°N, 120.04°WVaqueros — 35.25°N, 120.06°WVaqueros — 35.28°N, 120.13°WVaqueros — 35.82°N, 121.06°WVaqueros — 35.77°N, 120.93°WVaqueros — 36.07°N, 121.28°WVaqueros — 36.18°N, 121.31°WGatun — 9.35°N, 79.83°WGatun — 9.38°N, 79.82°WGatun — 9.17°N, 80.00°WGatun — 9.26°N, 79.91°WCastilletes — 11.93°N, 71.34°WCastilletes — 11.97°N, 71.29°WCastilletes — 11.93°N, 71.36°WPico — 33.94°N, 117.89°WPico — 34.36°N, 118.56°WPico — 34.43°N, 118.70°WPico — 34.34°N, 118.51°WPico — 34.35°N, 118.52°WJimol — 12.03°N, 71.30°WJimol — 11.95°N, 71.36°WJimol — 11.96°N, 71.43°WCulebra — 9.05°N, 79.65°WCulebra — 9.03°N, 79.64°WPalos Verdes Sand — 33.80°N, 118.16°WPalos Verdes Sand — 33.99°N, 118.45°WPalos Verdes Sand — 33.60°N, 117.88°WPalos Verdes Sand — 33.74°N, 118.28°WPalos Verdes Sand — 33.66°N, 117.94°WCercado — 19.46°N, 71.10°WCercado — 19.53°N, 71.27°WCercado — 19.58°N, 71.04°WGurabo — 19.58°N, 71.05°WGurabo — 19.53°N, 71.33°WGurabo — 18.93°N, 71.62°WTowsley — 34.36°N, 118.51°WPancho Rico — 35.90°N, 120.84°WPancho Rico — 36.00°N, 120.45°WPancho Rico — 36.03°N, 120.86°WPancho Rico — 35.99°N, 120.79°WPancho Rico — 35.97°N, 120.73°WPancho Rico — 35.89°N, 120.56°WPancho Rico — 36.13°N, 120.73°WMare — 10.00°N, 64.00°WMare — 10.00°N, 71.00°WMare — 10.61°N, 63.52°WMare — 10.64°N, 64.11°WTalparo — 10.67°N, 61.07°WTalparo — 10.63°N, 61.28°WArcadia — 27.89°N, 82.48°WArcadia — 27.96°N, 82.37°WArcadia — 30.21°N, 84.30°WArcadia — 30.30°N, 84.28°WArcadia — 30.10°N, 84.30°WBaitoa — 19.30°N, 70.80°WBaitoa — 19.35°N, 70.70°WLomita Marl — 33.75°N, 118.30°WLomita Marl — 33.74°N, 118.29°WSpringvale — 10.62°N, 61.05°WTubará — 10.99°N, 74.95°WTubará — 10.75°N, 75.00°WAnchor — 34.04°N, 118.40°WBohio — 9.17°N, 79.85°WBohio — 9.17°N, 79.85°WPamlico — 32.78°N, 79.90°WPamlico — 32.69°N, 80.23°WSan Pedro — 33.93°N, 117.95°WSan Pedro — 33.80°N, 118.16°WFort Thompson — 26.76°N, 81.44°WWare — 11.91°N, 71.28°WWare — 11.96°N, 71.28°W

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The named rock units Dallocardia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 36 further formations hold fewer occurrences each and are not listed. 27 occurrences have no formation on record, which is common for older literature.

Dallocardia and its relatives

Miocene

Where Dallocardia and its relatives were recorded in the Miocene.

Found in the same rock

3,246 taxa

The Paleobiology Database records 200 sites for Dallocardia, 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

85 references

Each of the 336 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. 73 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 content2

Picture of Dallocardia

Credit
Veronidae
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Dallocardia quadragenaria · fmnh:invertebrate zoology:2647

Smithsonian Open Access was 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 itTrachycardiinae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Stewart 1930)