Rossella

Rosella is a genus of glass sponges in the family Rossellidae. It is found in the Antarctic and sub-Antarctic regions.

Rossella

Charles Wyville Thomson · 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
RossellidaePBDB
Diet
suspension feederPBDB, for Lyssacinosa
Life habit
epifaunalPBDB, for Lyssacinosa
Motility
stationary, attachedPBDB, for Lyssacinosa
Vision
blindPBDB, for Hexactinellida
Environment
marinePBDB, for Hexactinellida

Time the record covers

At least 332 million years on record.

The record covers at least 422.7 Mya to 89.8 Mya. No occurrence read is dated outside 443.1 Mya to 85.7 Mya.

Ordovician — about 0 of 8 occurrencesSilurian — about 2 of 8 occurrencesDevonian — about 0 of 8 occurrencesCarboniferous — about 0 of 8 occurrencesPermian — about 0 of 8 occurrencesEarly Triassic — about 0 of 8 occurrencesMiddle Triassic — about 0 of 8 occurrencesLate Triassic — about 0 of 8 occurrencesEarly Jurassic — about 0 of 8 occurrencesMiddle Jurassic — about 0 of 8 occurrencesLate Jurassic — about 0 of 8 occurrencesEarly Cretaceous — about 0 of 8 occurrencesLate Cretaceous — about 6 of 8 occurrences450–438 Mya — about 0.2 occurrences438–425 Mya — about 0.5 occurrences425–413 Mya — about 1 occurrence91–79 Mya — about 6 occurrences422.7 Mya89.8 Mya450 Mya79 Mya

8 occurrences of Rossella on record, most of them in the Late Cretaceous. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

8 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

3 formations

Arnager Limestone — 55.05°N, 14.78°EBarlow Inlet — 74.82°N, 93.41°WHeceta Limestone — 55.84°N, 133.09°W

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

Rossella and its relatives

Late Cretaceous

Where Rossella and its relatives were recorded in the Late Cretaceous.

Found in the same rock

22 taxa

The Paleobiology Database records 3 sites for Rossella, 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

4 references

Each of the 8 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 content1

Picture of Rossella

Credit
Charles Wyville Thomson
Licence
Public Domain
Commercial use
the licence allows it

No 3D scan of Rossella 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 itRossellidae through timeFormations of the Late CretaceousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.