Callochiton septemvalvis

Callochiton septemvalvis, the smooth European chiton or smooth mail-shell is a medium-sized species of polyplacophoran mollusc in the family Ishnochitonidae. It was initially described by George Montagu in 1803 and can be found throughout Europe in shallow waters and several seas including the Mediterranean sea.

Callochiton septemvalvis

Montagu, 1803 · CC0 · 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
CallochitonPBDB
Diet
grazerPBDB, for Polyplacophora
Life habit
epifaunalPBDB, for Polyplacophora
Motility
facultatively mobile, attachedPBDB, for Polyplacophora
Vision
limitedPBDB, for Polyplacophora
Environment
marine,brackishPBDB, for Polyplacophora

Time the record covers

At most 1.1 million years on record.

Every occurrence read is dated to somewhere between 3.6 Mya and 2.58 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Pliocene — about 2 of 2 occurrencesPliocenePleistocene — about 0 of 2 occurrences3.6–3.6 Mya — about 0.1 occurrences3.6–3.5 Mya — about 0.1 occurrences3.5–3.4 Mya — about 0.1 occurrences3.4–3.4 Mya — about 0.1 occurrences3.4–3.3 Mya — about 0.1 occurrences3.3–3.2 Mya — about 0.1 occurrences3.2–3.2 Mya — about 0.1 occurrences3.2–3.1 Mya — about 0.1 occurrences3.1–3.0 Mya — about 0.1 occurrences3.0–3.0 Mya — about 0.1 occurrences3.0–2.9 Mya — about 0.1 occurrences2.9–2.8 Mya — about 0.1 occurrences2.8–2.8 Mya — about 0.1 occurrences2.8–2.7 Mya — about 0.1 occurrences2.7–2.6 Mya — about 0.1 occurrences2.6–2.6 Mya — about 0.1 occurrences4.1 Mya2.08 Mya

2 occurrences of Callochiton septemvalvis on record, most of them in the Pliocene. 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

Sabbie di Altavilla — 38.05°N, 13.55°E

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The named rock units Callochiton septemvalvis has been recovered from, largest first. Drawn where the rock is now, not where it formed.

Callochiton septemvalvis and its relatives

Pliocene

Where Callochiton septemvalvis and its relatives were recorded in the Pliocene.

Found in the same rock

The Paleobiology Database records no fossil sites for Callochiton septemvalvis, so there is nothing to compare it with.

Entered from

1 reference

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 Callochiton septemvalvis

Credit
Montagu, 1803
Licence
CC0
Commercial use
the licence allows it

No 3D scan of Callochiton septemvalvis 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 itCallochiton through timeFormations of the PlioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Montagu 1803)