Pionodema subaequata

Pionodema subaequata

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
PionodemaPBDB
Diet
suspension feederPBDB, for Draboviidae
Life habit
epifaunalPBDB, for Draboviidae
Motility
stationary, attachedPBDB, for Draboviidae
Vision
blindPBDB, for Rhynchonellata
Environment
marinePBDB, for Lophophorata

Time the record covers

At most 8.7 million years on record.

Every occurrence read is dated to somewhere between 458.2 Mya and 449.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Ordovician — about 26 of 26 occurrencesOrdovician458–458 Mya — about 0.2 occurrences458–458 Mya — about 0.3 occurrences458–457 Mya — about 0.3 occurrences457–457 Mya — about 0.9 occurrences457–457 Mya — about 1 occurrence457–456 Mya — about 1 occurrence456–456 Mya — about 1 occurrence456–456 Mya — about 1 occurrence456–455 Mya — about 1 occurrence455–455 Mya — about 1 occurrence455–455 Mya — about 1 occurrence455–454 Mya — about 1 occurrence454–454 Mya — about 1 occurrence454–454 Mya — about 1 occurrence454–454 Mya — about 0.9 occurrences454–453 Mya — about 0.9 occurrences453–453 Mya — about 0.9 occurrences453–453 Mya — about 0.9 occurrences453–452 Mya — about 0.9 occurrences452–452 Mya — about 0.9 occurrences452–452 Mya — about 0.9 occurrences452–451 Mya — about 0.9 occurrences451–451 Mya — about 0.9 occurrences451–451 Mya — about 0.9 occurrences451–450 Mya — about 0.9 occurrences450–450 Mya — about 0.9 occurrences450–450 Mya — about 0.9 occurrences450–449 Mya — about 0.2 occurrences458.7 Mya449 Mya

26 occurrences of Pionodema subaequata on record, most of them in the Ordovician. 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

26 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

15 formations

Decorah Shale — 44.98°N, 93.27°WDecorah Shale — 44.95°N, 93.10°WIon — 42.00°N, 90.50°WMurfreesboro Limestone — 35.50°N, 86.50°WPierce Limestone — 35.50°N, 86.50°WRidley Limestone — 35.50°N, 86.50°WLebanon Limestone — 35.50°N, 86.50°WHermitage — 35.50°N, 86.50°WProsser Limestone — 44.98°N, 93.27°WSpechts Ferry — 42.00°N, 90.50°WGuttenberg — 42.00°N, 90.50°WDunleith — 42.00°N, 90.50°WBardahessiagh — 54.60°N, 6.88°WDecorah — 39.12°N, 90.97°WMacy — 39.53°N, 91.36°WChaumont — 45.52°N, 73.58°W

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The named rock units Pionodema subaequata has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.

Pionodema subaequata and its relatives

Ordovician

Where Pionodema subaequata and its relatives were recorded in the Ordovician.

Found in the same rock

343 taxa

The Paleobiology Database records 26 sites for Pionodema subaequata, 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

9 references

Each of the 26 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 content1

Picture of Pionodema subaequata

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

No 3D scan of Pionodema subaequata 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 itPionodema through timeFormations of the OrdovicianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Conrad 1843)