Poliellina

Poliellina is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived during the early part of the Botomian stage, which lasted from approximately 524 to 518.5 million years ago. This faunal stage was part of the Cambrian Period.

No picture of Poliellina was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Poliellina, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
DolichometopidaePBDB
Diet
carnivorePBDB, for Corynexochida
Life habit
nektobenthicPBDB, for Corynexochida
Motility
actively mobilePBDB, for Corynexochida
Environment
marinePBDB, for Trilobita

Time the record covers

At most 8.9 million years on record.

Every occurrence read is dated to somewhere between 521 Mya and 512.1 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Cambrian — about 15 of 15 occurrencesCambrian521–521 Mya — about 0.1 occurrences521–521 Mya — about 0.2 occurrences521–520 Mya — about 0.2 occurrences520–520 Mya — about 0.2 occurrences520–520 Mya — about 0.2 occurrences520–519 Mya — about 0.2 occurrences519–519 Mya — about 0.2 occurrences519–519 Mya — about 0.2 occurrences519–518 Mya — about 0.2 occurrences518–518 Mya — about 0.2 occurrences518–518 Mya — about 0.2 occurrences518–517 Mya — about 0.2 occurrences517–517 Mya — about 0.2 occurrences517–517 Mya — about 0.2 occurrences517–516 Mya — about 0.2 occurrences516–516 Mya — about 0.5 occurrences516–516 Mya — about 1 occurrence516–515 Mya — about 1 occurrence515–515 Mya — about 1 occurrence515–515 Mya — about 1 occurrence515–514 Mya — about 1 occurrence514–514 Mya — about 1 occurrence514–514 Mya — about 1 occurrence514–513 Mya — about 1 occurrence513–513 Mya — about 1 occurrence513–513 Mya — about 1 occurrence513–512 Mya — about 1 occurrence512–512 Mya — about 0.5 occurrences521.5 Mya511.6 Mya

15 occurrences of Poliellina 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

15 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

5 formations

Usa — 56.00°N, 88.00°EUsa — 54.00°N, 90.75°EUsa — 54.23°N, 90.82°EOi-Muran Reef Massif — 61.07°N, 126.18°ELower Shangan — 51.40°N, 94.23°EAkdurug — 51.72°N, 92.20°EIrbitey — 50.95°N, 92.83°E

Loading coastlines…

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

Poliellina and its relatives

Cambrian

Where Poliellina and its relatives were recorded in the Cambrian.

Found in the same rock

97 taxa

The Paleobiology Database records 5 sites for Poliellina, 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

3 references

Each of the 15 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. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content0

No picture of Poliellina was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Poliellina, or no answer at all. This entry cannot say which.

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 itDolichometopidae through timeFormations of the CambrianThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Poletayeva 1936