Parazyga

Parazyga

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
ParazygidaePBDB
Diet
suspension feederPBDB, for Retziidina
Life habit
low-level epifaunalPBDB, for Retziidina
Motility
stationary, attachedPBDB, for Retziidina
Vision
blindPBDB, for Rhynchonellata
Environment
marinePBDB, for Lophophorata

Time the record covers

At least 10 million years on record.

The record covers at least 382.31 Mya to 372.15 Mya. No occurrence read is dated outside 393.47 Mya to 358.86 Mya.

Devonian — about 33 of 33 occurrencesDevonianCarboniferous — about 0 of 33 occurrences394–393 Mya — about 0.2 occurrences393–392 Mya — about 0.4 occurrences392–391 Mya — about 0.4 occurrences391–389 Mya — about 0.4 occurrences389–388 Mya — about 0.4 occurrences388–387 Mya — about 5 occurrences387–386 Mya — about 6 occurrences386–385 Mya — about 6 occurrences385–383 Mya — about 6 occurrences383–382 Mya — about 5 occurrences373–371 Mya — about 0.1 occurrences371–370 Mya — about 0.2 occurrences370–369 Mya — about 0.2 occurrences369–368 Mya — about 0.2 occurrences368–367 Mya — about 0.2 occurrences367–365 Mya — about 0.2 occurrences365–364 Mya — about 0.2 occurrences364–363 Mya — about 0.2 occurrences363–362 Mya — about 0.2 occurrences362–361 Mya — about 0.2 occurrences361–359 Mya — about 0.2 occurrences359–358 Mya — about 0.1 occurrences382.31 Mya372.15 Mya394.2 Mya358.2 Mya

33 occurrences of Parazyga on record, most of them in the Devonian. 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

33 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

6 formations

Ludlowville — 42.86°N, 77.76°WLudlowville — 42.83°N, 77.81°WLudlowville — 42.88°N, 78.57°WLudlowville — 42.96°N, 78.13°WLudlowville — 42.80°N, 77.27°WLudlowville — 42.78°N, 76.99°WLudlowville — 42.73°N, 76.71°WLudlowville — 42.89°N, 77.36°WMoscow — 42.90°N, 78.04°WMoscow — 42.81°N, 77.90°WMoscow — 42.77°N, 77.83°WChagrin Shale — 41.70°N, 81.15°WChagrin Shale — 41.72°N, 81.25°WJaycox — 42.85°N, 77.83°WJaycox — 42.89°N, 77.70°WTully — 42.83°N, 75.78°WLogansport Limestone — 40.72°N, 86.22°W

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The named rock units Parazyga has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Parazyga and its relatives

Devonian

Where Parazyga and its relatives were recorded in the Devonian.

Found in the same rock

276 taxa

The Paleobiology Database records 30 sites for Parazyga, 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 33 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 Parazyga

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

No 3D scan of Parazyga was found in MorphoSource and Sketchfab.

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 itParazygidae through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.