Marcia

Marcia

via iDigBio · 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
TapetiniPBDB
Diet
suspension feederPBDB, for Veneridae
Life habit
infaunalPBDB, for Veneridae
Motility
facultatively mobilePBDB, for Veneridae
Vision
blindPBDB, for Bivalvia

Time the record covers

At least 37 million years on record.

The record covers at least 37.71 Mya to 129 ka. No occurrence read is dated outside 56 Mya to 11.7 ka.

Paleocene — about 0 of 41 occurrencesEocene — about 20 of 41 occurrencesEoceneOligocene — about 1 of 41 occurrencesOligoceneMiocene — about 2 of 41 occurrencesMiocenePliocene — about 14 of 41 occurrencesPleistocene — about 4 of 41 occurrences57–55 Mya — about 0.3 occurrences55–53 Mya — about 0.7 occurrences53–51 Mya — about 0.7 occurrences51–50 Mya — about 0.7 occurrences50–48 Mya — about 0.7 occurrences48–46 Mya — about 0.7 occurrences46–44 Mya — about 0.7 occurrences44–42 Mya — about 0.7 occurrences42–40 Mya — about 3 occurrences40–38 Mya — about 5 occurrences38–36 Mya — about 3 occurrences36–34 Mya — about 3 occurrences34–32 Mya — about 0.8 occurrences32–30 Mya — about 0.2 occurrences30–29 Mya — about 0.2 occurrences29–27 Mya — about 0.2 occurrences27–25 Mya — about 0.2 occurrences25–23 Mya — about 0.2 occurrences17–15 Mya — about 0.2 occurrences15–13 Mya — about 0.4 occurrences13–11 Mya — about 0.4 occurrences11–9.5 Mya — about 0.3 occurrences9.5–7.6 Mya — about 0.3 occurrences7.6–5.7 Mya — about 0.3 occurrences5.7–3.8 Mya — about 8 occurrences3.8–1.9 Mya — about 6 occurrences1.9–0 Mya — about 4 occurrences37.71 Mya129 ka57 Mya0 Mya

41 occurrences of Marcia on record, most of them in the Eocene. 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

41 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

Cowlitz — 46.40°N, 122.93°WCowlitz — 46.39°N, 122.96°WCowlitz — 46.20°N, 123.02°WTalar — 25.33°N, 62.00°ETalar — 25.33°N, 65.50°ETejon — 34.91°N, 118.98°WTejon — 46.41°N, 122.98°WChatti Mudstone — 25.25°N, 62.25°EChatti Mudstone — 25.29°N, 62.13°ESables a Nummulites variolarius — 49.25°N, 2.50°EDampier Limestone — 25.53°S, 113.48°ETamala Limestone — 32.00°S, 115.75°EFutuna Limestone — 18.22°S, 178.78°ETwin Rivers — 48.22°N, 124.15°W

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The named rock units Marcia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 18 occurrences have no formation on record, which is common for older literature.

Marcia and its relatives

Eocene

Where Marcia and its relatives were recorded in the Eocene.

Found in the same rock

692 taxa

The Paleobiology Database records 21 sites for Marcia, 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

12 references

Each of the 41 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 content3

Picture of Marcia

Source
iDigBio
Credit
via iDigBio
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

CT scan

Licence
In Copyright
Commercial use
cannot be read from the licence given — check the record
Specimen
Marcia opima · fmnh:invertebrate zoology:319779

3D model

Source
Sketchfab
Credit
Tigerar1
Licence
Free Standard
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 itTapetini through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Adams and A 1857