Lasanius

Searched as Lasanius alatus. The Paleobiology Database treats Lasanius as the accepted name.

Lasanius is a genus of basal anaspid from the Early Silurian, around 443.8 million years ago, known from fossils found near Lesmahagow, Scotland. Specimens range from 13.3 to 74.5 mm in length.

Lasanius

Squisyfish · CC BY-SA 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
EuphaneropidaePBDB
Motility
actively mobilePBDB, for Chordata

Time the record covers

At most 2.3 million years on record.

The one occurrence read is dated to somewhere between 432.9 Mya and 430.6 Mya, which is a dating window rather than a span.

Silurian — about 1 of 1 occurrenceSilurian433–433 Mya — about 0.0 occurrences433–433 Mya — about 0.0 occurrences433–433 Mya — about 0.0 occurrences433–433 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 occurrences432–432 Mya — about 0.0 occurrences432–432 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 occurrences431–431 Mya — about 0.0 occurrences431–431 Mya — about 0.0 occurrences431–431 Mya — about 0.0 occurrences431–431 Mya — about 0.0 occurrences433.4 Mya430.1 Mya

1 occurrence of Lasanius 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.

Found in

1 formation

Fish Bed — 55.54°N, 3.94°W

Loading coastlines…

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

Lasanius and its relatives

Silurian

Where Lasanius and its relatives were recorded in the Silurian.

Found in the same rock

23 taxa

The Paleobiology Database records 3 sites for Lasanius, and this reads all of them. The number is how many of those sites it was catalogued from too.

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 the Paleobiology Database's own record for the work.

Media and terms

Media content1

Picture of Lasanius

Credit
Squisyfish
Licence
CC BY-SA 4.0
Commercial use
the licence allows it

No 3D scan of Lasanius 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 itEuphaneropidae through timeFormations of the SilurianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Traquair 1898