Archaeogastropoda

Archaeogastropoda was a taxonomic order of snails used in older classifications of gastropods, i.e. snails and slugs. Archeogastropoda are primarily marine prosobranch gastropod mollusks, mainly herbivores, typically having two gills and a double-chambered heart, with the eggs and sperm discharged directly into the water, excepting terrestrial species. They were traditionally regarded as a relatively primitive group.

Archaeogastropoda

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
StreptoneuraPBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Gastropoda
Vision
limitedPBDB, for Gastropoda

Time the record covers

At least 488 million years on record.

The record covers at least 488.9 Mya to 774 ka. No occurrence read is dated outside 497 Mya to 129 ka.

Cambrian — about 6 of 132 occurrencesOrdovician — about 20 of 132 occurrencesOrdovicianSilurian — about 9 of 132 occurrencesDevonian — about 61 of 132 occurrencesDevonianCarboniferous — about 8 of 132 occurrencesCarboniferousPermian — about 0 of 132 occurrencesEarly Triassic — about 0 of 132 occurrencesMiddle Triassic — about 1 of 132 occurrencesLate Triassic — about 1 of 132 occurrencesEarly Jurassic — about 12 of 132 occurrencesMiddle Jurassic — about 1 of 132 occurrencesLate Jurassic — about 0 of 132 occurrencesEarly Cretaceous — about 3 of 132 occurrencesEarly CretaceousLate Cretaceous — about 0 of 132 occurrencesPaleocene — about 0 of 132 occurrencesEocene — about 7 of 132 occurrencesOligocene — about 2 of 132 occurrencesMiocene — about 0 of 132 occurrencesPliocene — about 0 of 132 occurrencesPleistocene — about 1 of 132 occurrences507–490 Mya — about 4 occurrences490–473 Mya — about 5 occurrences473–456 Mya — about 5 occurrences456–439 Mya — about 13 occurrences439–422 Mya — about 7 occurrences422–406 Mya — about 7 occurrences406–389 Mya — about 6 occurrences389–372 Mya — about 37 occurrences372–355 Mya — about 13 occurrences355–338 Mya — about 4 occurrences338–321 Mya — about 2 occurrences321–304 Mya — about 1.0 occurrences304–287 Mya — about 0.1 occurrences253–237 Mya — about 1 occurrence220–203 Mya — about 1 occurrence203–186 Mya — about 10 occurrences186–169 Mya — about 3 occurrences135–118 Mya — about 2 occurrences118–101 Mya — about 1 occurrence68–51 Mya — about 5 occurrences51–34 Mya — about 2 occurrences34–17 Mya — about 2 occurrences17–0 Mya — about 1 occurrence488.9 Mya774 ka507 Mya0 Mya

132 occurrences of Archaeogastropoda on record, most of them in the Devonian. 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

132 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

50 formations

Waterways — 58.00°N, 112.72°WBedford Shale — 41.59°N, 81.57°WBedford Shale — 41.38°N, 81.56°WBedford Shale — 41.50°N, 81.70°WWhitehall — 42.56°N, 73.40°WWhitehall — 42.54°N, 73.40°WLangoyen — 60.00°N, 11.00°ELangoyen — 59.88°N, 10.59°EIdri — 27.50°N, 13.50°EIdri — 27.40°N, 13.10°EKalchreuth — 49.55°N, 11.13°EFloyd Shale — 34.50°N, 85.50°WFloyd Shale — 34.75°N, 85.25°WFloyd Shale — 34.67°N, 85.17°WNahanni — 61.25°N, 124.00°WLeduc — 53.55°N, 113.50°WKeyser Limestone — 39.64°N, 77.66°WMartinsburg — 36.95°N, 81.08°WElton Beds — 52.37°N, 2.73°WLangara — 59.88°N, 10.59°EOriskany Sandstone — 41.41°N, 75.66°WHeadless — 61.25°N, 124.00°WHeadless — 70.00°N, 95.00°WForeknobs — 37.78°N, 80.00°WForeknobs — 39.38°N, 78.67°WLouisiana Limestone — 39.45°N, 91.05°WBighorn — 44.74°N, 107.73°WVerulam — 44.02°N, 77.15°WVerulam — 44.50°N, 79.17°WFort Cassin — 43.91°N, 73.42°WPamelia — 45.58°N, 74.00°WOrchard Creek Shale — 37.19°N, 89.45°WSolvik — 59.92°N, 10.75°EAkron — 42.85°N, 78.80°W

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The named rock units Archaeogastropoda has been recovered from, largest first. Drawn where the rock is now, not where it formed. 26 further formations hold fewer occurrences each and are not listed. 26 occurrences have no formation on record, which is common for older literature.

Archaeogastropoda and its relatives

Devonian

Where Archaeogastropoda and its relatives were recorded in the Devonian.

Found in the same rock

1,063 taxa

The Paleobiology Database records 125 sites for Archaeogastropoda, 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

52 references

Each of the 132 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. 40 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 Archaeogastropoda

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

No 3D scan of Archaeogastropoda 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.

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 itStreptoneura through timeFormations of the DevonianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Thiele 1925