Periarchus

Periarchus

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
ProtoscutellidaePBDB
Diet
detritivorePBDB, for Clypeasteroida
Life habit
semi-infaunalPBDB, for Clypeasteroida
Motility
slow-movingPBDB, for Clypeasteroida
Vision
limitedPBDB, for Echinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At least 3.3 million years on record.

The record covers at least 41.03 Mya to 37.71 Mya. No occurrence read is dated outside 56 Mya to 33.9 Mya.

Paleocene — about 0 of 82 occurrencesEocene — about 82 of 82 occurrencesEoceneOligocene — about 0 of 82 occurrences57–56 Mya — about 0.0 occurrences56–55 Mya — about 0.1 occurrences55–54 Mya — about 0.1 occurrences54–53 Mya — about 0.1 occurrences53–53 Mya — about 0.1 occurrences53–52 Mya — about 0.1 occurrences52–51 Mya — about 0.1 occurrences51–50 Mya — about 0.1 occurrences50–50 Mya — about 0.1 occurrences50–49 Mya — about 0.1 occurrences49–48 Mya — about 0.2 occurrences48–47 Mya — about 1 occurrence47–46 Mya — about 1 occurrence46–46 Mya — about 1 occurrence46–45 Mya — about 1 occurrence45–44 Mya — about 1 occurrence44–43 Mya — about 1 occurrence43–43 Mya — about 1 occurrence43–42 Mya — about 1 occurrence42–41 Mya — about 1 occurrence41–40 Mya — about 11 occurrences40–40 Mya — about 12 occurrences40–39 Mya — about 12 occurrences39–38 Mya — about 12 occurrences38–37 Mya — about 7 occurrences37–36 Mya — about 4 occurrences36–36 Mya — about 4 occurrences36–35 Mya — about 4 occurrences35–34 Mya — about 4 occurrences34–33 Mya — about 1 occurrence41.03 Mya37.71 Mya56.5 Mya33.4 Mya

82 occurrences of Periarchus on record, most of them in the Eocene. 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

82 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

14 formations

Moodys Branch — 31.88°N, 88.32°WMoodys Branch — 31.77°N, 88.33°WMoodys Branch — 31.50°N, 87.80°WMoodys Branch — 31.71°N, 87.78°WMoodys Branch — 31.31°N, 86.48°WMoodys Branch — 31.03°N, 85.86°WMoodys Branch — 31.03°N, 85.85°WMoodys Branch — 30.71°N, 84.86°WMoodys Branch — 31.55°N, 87.58°WMoodys Branch — 31.14°N, 87.94°WMoodys Branch — 32.70°N, 83.56°WMoodys Branch — 31.88°N, 88.68°WMoodys Branch — 32.33°N, 90.15°WMoodys Branch — 31.10°N, 86.09°WMoodys Branch — 31.57°N, 88.04°WMoodys Branch — 31.54°N, 87.52°WCastle Hayne — 34.64°N, 77.65°WCastle Hayne — 34.37°N, 77.86°WCastle Hayne — 34.97°N, 78.05°WCastle Hayne — 34.44°N, 77.83°WCastle Hayne — 34.75°N, 77.43°WCastle Hayne — 34.66°N, 77.73°WCastle Hayne — 35.01°N, 77.57°WCastle Hayne — 35.30°N, 77.28°WCastle Hayne — 34.90°N, 78.05°WCastle Hayne — 35.01°N, 77.51°WCastle Hayne — 34.23°N, 77.94°WYazoo Clay — 31.50°N, 87.80°WYazoo Clay — 31.65°N, 87.71°WYazoo Clay — 31.26°N, 86.77°WLisbon — 31.20°N, 86.17°WLisbon — 31.30°N, 86.48°WLisbon — 31.32°N, 86.73°WLisbon — 31.37°N, 84.93°WInglis Limestone — 28.92°N, 82.61°WInglis Limestone — 29.23°N, 82.70°WInglis Limestone — 29.02°N, 82.62°WInglis Limestone — 29.03°N, 82.67°WSantee Limestone — 33.25°N, 80.45°WSantee Limestone — 33.18°N, 79.95°WTupelo Bay — 33.25°N, 80.45°WTupelo Bay — 33.47°N, 80.49°WGosport Sand — 31.13°N, 87.93°WGosport Sand — 31.51°N, 87.89°WGosport — 31.53°N, 87.95°WGosport — 31.29°N, 86.55°WOcala Limestone — 29.01°N, 82.68°WCrystal River Limestone — 31.31°N, 86.48°WYazoo — 31.86°N, 88.70°WLake City — 31.15°N, 81.49°WCooper — 32.36°N, 85.59°W

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The named rock units Periarchus 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.

Periarchus and its relatives

Eocene

Where Periarchus and its relatives were recorded in the Eocene.

Found in the same rock

432 taxa

The Paleobiology Database records 76 sites for Periarchus, 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

15 references

Each of the 82 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. 3 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 content1

Picture of Periarchus

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

No 3D scan of Periarchus was found in Sketchfab.

Smithsonian Open Access and MorphoSource were 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 itProtoscutellidae through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Conrad 1866