Breviarca

Breviarca

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
StriarciniPBDB
Diet
suspension feederPBDB, for Arcidae
Life habit
epifaunalPBDB, for Arcidae
Motility
facultatively mobile, attachedPBDB, for Arcidae
Vision
limitedPBDB, for Arcidae
Environment
lagoonal,coastal,inner shelf,outer shelf,oceanic,brackish,freshwaterPBDB, for Arcidae

Time the record covers

At least 28 million years on record.

The record covers at least 100.5 Mya to 72.2 Mya. No occurrence read is dated outside 113.2 Mya to 66 Mya.

Early Cretaceous — about 14 of 43 occurrencesEarly CretaceousLate Cretaceous — about 29 of 43 occurrencesLate CretaceousPaleocene — about 0 of 43 occurrences114–113 Mya — about 0.8 occurrences113–111 Mya — about 2 occurrences111–109 Mya — about 2 occurrences109–108 Mya — about 2 occurrences108–106 Mya — about 2 occurrences106–104 Mya — about 2 occurrences104–103 Mya — about 2 occurrences103–101 Mya — about 2 occurrences101–99 Mya — about 2 occurrences99–98 Mya — about 1 occurrence98–96 Mya — about 1 occurrence96–95 Mya — about 1 occurrence95–93 Mya — about 0.8 occurrences93–91 Mya — about 0.4 occurrences91–90 Mya — about 0.3 occurrences85–83 Mya — about 0.7 occurrences83–81 Mya — about 2 occurrences81–80 Mya — about 2 occurrences80–78 Mya — about 2 occurrences78–77 Mya — about 2 occurrences77–75 Mya — about 2 occurrences75–73 Mya — about 2 occurrences73–72 Mya — about 2 occurrences72–70 Mya — about 2 occurrences70–68 Mya — about 2 occurrences68–67 Mya — about 2 occurrences67–65 Mya — about 0.9 occurrences100.5 Mya72.2 Mya114.1 Mya65.1 Mya

43 occurrences of Breviarca on record, most of them in the Late Cretaceous. 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

43 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

12 formations

Kiowa — 37.32°N, 99.75°WKiowa — 37.28°N, 99.66°WKiowa — 37.22°N, 99.90°WKiowa — 37.44°N, 99.08°WKiowa — 38.59°N, 97.84°WKiowa — 38.46°N, 97.90°WKiowa — 38.63°N, 98.10°WKiowa — 38.60°N, 97.99°WKiowa — 38.89°N, 97.79°WKiowa — 38.72°N, 97.53°WNacatoch Sand — 32.59°N, 96.31°WNacatoch Sand — 32.10°N, 96.47°WNacatoch Sand — 33.14°N, 96.11°WWoodbine — 32.86°N, 97.06°WWoodbine — 33.66°N, 96.45°WWoodbine — 33.87°N, 95.57°WMerchantville — 39.54°N, 75.72°WMount Laurel Sand — 39.55°N, 75.65°WKemp Clay — 30.23°N, 97.52°WCoffee Sand — 34.26°N, 88.70°WNeylandville Marl — 32.10°N, 96.47°WMancos Shale — 36.18°N, 109.88°WLa Mesa — 5.25°S, 81.13°WBlack Creek — 35.23°N, 77.79°WGraneros Shale — 38.12°N, 104.87°W

Loading coastlines…

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

Breviarca and its relatives

Late Cretaceous

Where Breviarca and its relatives were recorded in the Late Cretaceous.

Found in the same rock

523 taxa

The Paleobiology Database records 37 sites for Breviarca, 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

10 references

Each of the 43 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 content2

Picture of Breviarca

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

3D model

Source
Sketchfab
Licence
CC Attribution
Commercial use
cannot be read from the licence given — check the record

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 itStriarcini through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Conrad 1872