Plagiobrissus

Plagiobrissus is a genus of echinoderms belonging to the family Brissidae.

Plagiobrissus

Uncredited · 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
BrissidaePBDB
Diet
deposit feeder, detritivorePBDB, for Spatangoida
Life habit
shallow infaunalPBDB, for Spatangoida
Motility
slow-movingPBDB, for Spatangoida
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Spatangoida

Time the record covers

At least 32 million years on record.

The record covers at least 37.71 Mya to 5.333 Mya. No occurrence read is dated outside 48.07 Mya to 2.58 Mya.

Eocene — about 17 of 24 occurrencesEoceneOligocene — about 1 of 24 occurrencesOligoceneMiocene — about 4 of 24 occurrencesMiocenePliocene — about 2 of 24 occurrencesPleistocene — about 0 of 24 occurrences49–47 Mya — about 0.1 occurrences47–46 Mya — about 0.3 occurrences46–44 Mya — about 0.3 occurrences44–43 Mya — about 0.3 occurrences43–41 Mya — about 0.3 occurrences41–40 Mya — about 2 occurrences40–38 Mya — about 2 occurrences38–36 Mya — about 4 occurrences36–35 Mya — about 5 occurrences35–33 Mya — about 3 occurrences33–32 Mya — about 0.2 occurrences32–30 Mya — about 0.2 occurrences30–28 Mya — about 0.2 occurrences28–27 Mya — about 0.2 occurrences24–22 Mya — about 0.2 occurrences22–21 Mya — about 0.4 occurrences21–19 Mya — about 0.4 occurrences19–17 Mya — about 0.4 occurrences17–16 Mya — about 0.4 occurrences16–14 Mya — about 0.2 occurrences14–13 Mya — about 0.2 occurrences13–11 Mya — about 0.2 occurrences11–9.6 Mya — about 0.2 occurrences9.6–8.0 Mya — about 0.2 occurrences8.0–6.4 Mya — about 0.6 occurrences6.4–4.8 Mya — about 1 occurrence4.8–3.2 Mya — about 1 occurrence3.2–1.7 Mya — about 0.2 occurrences37.71 Mya5.333 Mya49 Mya1.7 Mya

24 occurrences of Plagiobrissus on record, most of them in the Eocene. 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

24 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

Ocala — 29.80°N, 83.32°WOcala — 30.07°N, 83.17°WOcala — 31.61°N, 84.15°WOcala — 31.31°N, 86.59°WCrystal River Limestone — 30.05°N, 83.18°WCrystal River Limestone — 28.93°N, 82.70°WCastle Hayne — 34.66°N, 77.73°WCastle Hayne — 34.80°N, 78.02°WInglis Limestone — 29.03°N, 82.67°WYazoo Clay — 31.50°N, 87.80°WTamiami — 26.13°N, 81.48°WAvon Park — 29.01°N, 82.65°WPirabas — 0.48°S, 48.17°WMisoa — 9.74°N, 70.87°WWaccamaw — 32.98°N, 80.03°WMarianna — 30.77°N, 85.22°WGuadaíra — 37.36°N, 5.84°W

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The named rock units Plagiobrissus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 4 occurrences have no formation on record, which is common for older literature.

Plagiobrissus and its relatives

Eocene

Where Plagiobrissus and its relatives were recorded in the Eocene.

Found in the same rock

500 taxa

The Paleobiology Database records 19 sites for Plagiobrissus, 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 24 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 Plagiobrissus

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

3D scan

Licence
CC0 — this site’s default, not the record’s
Commercial use
the licence allows it
Specimen
Plagiobrissus grandis

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 itBrissidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Pomel 1883)