Emo vorticaudum

Emo is a genus of aplacophoran mollusc known from the Homerian Coalbrookdale Formation of England. It contains one species, Emo vorticaudum. This genus is likely related to Acaenoplax on account of the combination of valves and spicules, alongside the lack of a foot.

Emo vorticaudum

Mark D. Sutton, Julia D. Sigwart, Derek E. G. Briggs, Pierre Gueriau, Andrew King, David J. Siveter & Derek J. Siveter · 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
EmoPBDB
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 6.2 million years on record.

The one occurrence read is dated to somewhere between 432.9 Mya and 426.7 Mya, which is a dating window rather than a span.

Silurian — about 1 of 1 occurrenceSilurian433–433 Mya — about 0.0 occurrences433–432 Mya — about 0.0 occurrences432–432 Mya — about 0.0 occurrences432–432 Mya — about 0.0 occurrences432–432 Mya — about 0.0 occurrences432–431 Mya — about 0.0 occurrences431–431 Mya — about 0.0 occurrences431–431 Mya — about 0.0 occurrences431–431 Mya — about 0.0 occurrences431–431 Mya — about 0.0 occurrences431–430 Mya — about 0.0 occurrences430–430 Mya — about 0.0 occurrences430–430 Mya — about 0.0 occurrences430–430 Mya — about 0.0 occurrences430–429 Mya — about 0.0 occurrences429–429 Mya — about 0.0 occurrences429–429 Mya — about 0.0 occurrences429–429 Mya — about 0.0 occurrences429–428 Mya — about 0.0 occurrences428–428 Mya — about 0.0 occurrences428–428 Mya — about 0.0 occurrences428–428 Mya — about 0.0 occurrences428–427 Mya — about 0.0 occurrences427–427 Mya — about 0.0 occurrences427–427 Mya — about 0.0 occurrences427–427 Mya — about 0.0 occurrences433.4 Mya426.2 Mya

1 occurrence of Emo vorticaudum on record, most of them in the Silurian. 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

1 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.

Emo vorticaudum and its relatives

Silurian

Where Emo vorticaudum and its relatives were recorded in the Silurian.

Found in the same rock

53 taxa

The Paleobiology Database records 1 site for Emo vorticaudum, 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

1 reference

Each of the 1 occurrence 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 doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Emo vorticaudum

Credit
Mark D. Sutton, Julia D. Sigwart, Derek E. G. Briggs, Pierre Gueriau, Andrew King, David J. Siveter & Derek J. Siveter
Licence
CC BY 4.0
Commercial use
the licence allows it

No repository was searched for a 3D scan: the genus name is too short to search on without matching most of the record.

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 itEmo through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Sutton et al. 2025