Holmia

Searched as Holmia kjerulfi marginata. The Paleobiology Database treats Holmia as the accepted name.

Holmia is a genus of a well known group of extinct arthropods, the trilobites, that lived during the Lower Cambrian (Atdabanian) in what are now Scandinavia, Poland and Morocco.

Holmia

Johan Kiaer (1916) · Public Domain · 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
HolmiidaePBDB
Diet
deposit feederPBDB, for Redlichiida
Life habit
low-level epifaunalPBDB, for Redlichiida
Motility
fast-movingPBDB, for Redlichiida
Vision
well-developedPBDB, for Holmiidae
Environment
marinePBDB, for Trilobita

Time the record covers

At most 5 million years on record.

The one occurrence read is dated to somewhere between 521 Mya and 516 Mya, which is a dating window rather than a span.

Cambrian — about 1 of 1 occurrenceCambrian521–521 Mya — about 0.0 occurrences521–521 Mya — about 0.0 occurrences521–521 Mya — about 0.0 occurrences521–520 Mya — about 0.0 occurrences520–520 Mya — about 0.0 occurrences520–520 Mya — about 0.0 occurrences520–520 Mya — about 0.0 occurrences520–520 Mya — about 0.0 occurrences520–519 Mya — about 0.0 occurrences519–519 Mya — about 0.0 occurrences519–519 Mya — about 0.0 occurrences519–519 Mya — about 0.0 occurrences519–519 Mya — about 0.0 occurrences519–518 Mya — about 0.0 occurrences518–518 Mya — about 0.0 occurrences518–518 Mya — about 0.0 occurrences518–518 Mya — about 0.0 occurrences518–518 Mya — about 0.0 occurrences518–517 Mya — about 0.0 occurrences517–517 Mya — about 0.0 occurrences517–517 Mya — about 0.0 occurrences517–517 Mya — about 0.0 occurrences517–517 Mya — about 0.0 occurrences517–516 Mya — about 0.0 occurrences516–516 Mya — about 0.0 occurrences516–516 Mya — about 0.0 occurrences521.5 Mya515.5 Mya

1 occurrence of Holmia on record, most of them in the Cambrian. 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

Ocieseki Sandstone — 50.75°N, 20.97°E

Loading coastlines…

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

Holmia and its relatives

Cambrian

Where Holmia and its relatives were recorded in the Cambrian.

Found in the same rock

58 taxa

The Paleobiology Database records 11 sites for Holmia, 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 the Paleobiology Database's own record for the work.

Media and terms

Media content2

Picture of Holmia

Credit
Johan Kiaer (1916)
Licence
Public Domain
Commercial use
the licence allows it

3D model

Source
Sketchfab
Licence
CC Attribution-NonCommercial
Commercial use
the licence does not allow it

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 itHolmiidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Matthew 1890)