Polyschides

Polyschides is a genus of gadilid tusk shell (scaphopod).

Polyschides

Marie Hennion · CC BY 4.0 · 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
SiphonodentaliinaePBDB
Diet
deposit feederPBDB, for Gadilida
Life habit
shallow infaunalPBDB, for Gadilida
Motility
slow-movingPBDB, for Gadilida
Vision
blindPBDB, for Scaphopoda

Time the record covers

At least 45 million years on record.

The record covers at least 48.07 Mya to 2.58 Mya. No occurrence read is dated outside 56 Mya to 774 ka.

Paleocene — about 0 of 52 occurrencesEocene — about 14 of 52 occurrencesEoceneOligocene — about 0 of 52 occurrencesMiocene — about 27 of 52 occurrencesMiocenePliocene — about 10 of 52 occurrencesPleistocene — about 1 of 52 occurrences57–55 Mya — about 0.1 occurrences55–53 Mya — about 0.2 occurrences53–51 Mya — about 0.2 occurrences51–49 Mya — about 0.2 occurrences49–48 Mya — about 0.2 occurrences42–40 Mya — about 4 occurrences40–38 Mya — about 6 occurrences38–36 Mya — about 2 occurrences36–34 Mya — about 1.0 occurrences34–32 Mya — about 0.2 occurrences21–19 Mya — about 2 occurrences19–17 Mya — about 3 occurrences17–15 Mya — about 2 occurrences15–13 Mya — about 0.2 occurrences13–11 Mya — about 2 occurrences11–9.5 Mya — about 8 occurrences9.5–7.6 Mya — about 8 occurrences7.6–5.7 Mya — about 2 occurrences5.7–3.8 Mya — about 5 occurrences3.8–1.9 Mya — about 5 occurrences1.9–0 Mya — about 0.7 occurrences48.07 Mya2.58 Mya57 Mya0 Mya

52 occurrences of Polyschides on record, most of them in the Miocene. 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

52 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

18 formations

Gatun — 9.36°N, 79.84°WGatun — 9.34°N, 79.82°WMoodys Branch — 32.23°N, 92.15°WMoodys Branch — 32.30°N, 90.18°WMoodys Branch — 31.26°N, 93.82°WMoodys Branch — 32.04°N, 92.02°WMoodys Branch — 31.66°N, 92.90°WMoodys Branch — 32.98°N, 90.30°WChipola — 30.57°N, 85.84°WChipola — 30.44°N, 85.19°WChipola — 30.43°N, 84.98°WMare — 10.00°N, 64.00°WMare — 10.00°N, 71.00°WMare — 10.61°N, 63.52°WPlaya Grande — 10.00°N, 63.00°WPlaya Grande — 10.00°N, 71.00°WYazoo — 31.66°N, 92.90°WYazoo — 31.82°N, 92.33°WTuira — 8.47°N, 77.70°WTuira — 8.22°N, 77.58°WBowden — 17.88°N, 76.28°WJackson Bluff — 30.39°N, 84.64°WCanoa — 0.20°N, 80.27°WCaloosahatchee — 27.77°N, 82.68°WGram — 55.28°N, 9.00°EGosport Sand — 31.54°N, 87.52°WValiente — 9.21°N, 82.11°WShark Hole Point — 9.04°N, 81.74°WChagres Sandstone — 9.17°N, 80.28°WCook Mountain — 30.63°N, 96.55°WReklaw — 30.01°N, 97.25°W

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The named rock units Polyschides 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.

Polyschides and its relatives

Miocene

Where Polyschides and its relatives were recorded in the Miocene.

Found in the same rock

1,748 taxa

The Paleobiology Database records 30 sites for Polyschides, 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

17 references

Each of the 52 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. 5 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 Polyschides

Credit
Marie Hennion
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Polyschides 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.

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 itSiphonodentaliinae through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Pilsbry 1898)