Basommatophora

Basommatophora was a term that was previously used as a taxonomic informal group, a group of snails within the informal group Pulmonata, the air-breathing slugs and snails. According to the taxonomy of the Gastropoda, whenever monophyly has not been tested, or where a traditional taxon of gastropods has now been discovered to be paraphyletic or polyphyletic, the term "group" or "informal group" was used.

Basommatophora

Dr. Lars Peters · CC BY-SA 3.0 · 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
PulmonataPBDB
Life habit
epifaunalPBDB, for Gastropoda
Motility
actively mobilePBDB, for Pulmonata
Vision
limitedPBDB, for Gastropoda
Environment
terrestrialPBDB, for Pulmonata

Time the record covers

At least 6.8 million years on record.

The record covers at least 132.6 Mya to 125.77 Mya. No occurrence read is dated outside 139.1 Mya to 121.4 Mya.

Early Cretaceous — about 2 of 2 occurrencesEarly Cretaceous140–139 Mya — about 0.0 occurrences139–138 Mya — about 0.1 occurrences138–138 Mya — about 0.1 occurrences138–137 Mya — about 0.1 occurrences137–136 Mya — about 0.1 occurrences136–136 Mya — about 0.1 occurrences136–135 Mya — about 0.1 occurrences135–135 Mya — about 0.1 occurrences135–134 Mya — about 0.1 occurrences134–133 Mya — about 0.1 occurrences133–133 Mya — about 0.1 occurrences133–132 Mya — about 0.0 occurrences126–125 Mya — about 0.1 occurrences125–125 Mya — about 0.1 occurrences125–124 Mya — about 0.1 occurrences124–123 Mya — about 0.1 occurrences123–123 Mya — about 0.1 occurrences123–122 Mya — about 0.1 occurrences122–122 Mya — about 0.1 occurrences122–121 Mya — about 0.0 occurrences132.6 Mya125.77 Mya139.6 Mya120.9 Mya

2 occurrences of Basommatophora on record, most of them in the Early Cretaceous. 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

2 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

1 formation

Blesa — 40.95°N, 0.77°W

Loading coastlines…

The named rock units Basommatophora 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.

Basommatophora and its relatives

Early Cretaceous

Where Basommatophora and its relatives were recorded in the Early Cretaceous.

Found in the same rock

116 taxa

The Paleobiology Database records 2 sites for Basommatophora, 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

2 references

Each of the 2 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. Each entry links to the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Basommatophora

Credit
Dr. Lars Peters
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

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 itPulmonata through timeFormations of the Early CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Keferstein 1864)