Stylaster

Stylaster is a genus of hydroids in the family Stylasteridae.

Stylaster

Uncredited · 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
StylasterinaPBDB
Diet
carnivore, suspension feederPBDB, for Hydrozoa
Life habit
epifaunalPBDB, for Hydrozoa
Motility
stationary, attachedPBDB, for Hydrozoa
Vision
blindPBDB, for Hydrozoa

Time the record covers

At least 64 million years on record.

The record covers at least 66 Mya to 1.8 Mya. No occurrence read is dated outside 72.2 Mya to 774 ka.

Late Cretaceous — about 1 of 9 occurrencesLate CretaceousPaleocene — about 0 of 9 occurrencesEocene — about 3 of 9 occurrencesEoceneOligocene — about 2 of 9 occurrencesOligoceneMiocene — about 1 of 9 occurrencesMiocenePliocene — about 1 of 9 occurrencesPleistocene — about 1 of 9 occurrences74–71 Mya — about 0.2 occurrences71–69 Mya — about 0.4 occurrences69–66 Mya — about 0.4 occurrences66–64 Mya — about 0.0 occurrences39–37 Mya — about 0.7 occurrences37–34 Mya — about 2 occurrences34–32 Mya — about 0.7 occurrences32–29 Mya — about 0.5 occurrences29–27 Mya — about 0.5 occurrences27–25 Mya — about 0.5 occurrences25–22 Mya — about 0.3 occurrences7.4–4.9 Mya — about 1 occurrence4.9–2.5 Mya — about 0.7 occurrences2.5–0 Mya — about 1 occurrence66 Mya1.8 Mya74 Mya0 Mya

9 occurrences of Stylaster on record, most of them in the Eocene. 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

9 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

6 formations

Quimper — 48.00°N, 122.83°WQuimper — 47.95°N, 122.68°WBrèches rouges de Carboneras — 37.60°N, 1.32°WKaawa — 37.38°S, 174.73°EMoin — 10.00°N, 83.04°WMiria — 23.02°S, 114.08°EGries Ranch — 48.03°N, 122.76°W

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The named rock units Stylaster has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.

Stylaster and its relatives

Eocene

Where Stylaster and its relatives were recorded in the Eocene.

Found in the same rock

176 taxa

The Paleobiology Database records 5 sites for Stylaster, 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

7 references

Each of the 9 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 content2

Picture of Stylaster

Credit
nobody named on the record
Licence
not stated by the source
Commercial use
cannot be read from the licence given — check the record

3D model

Source
Sketchfab
Licence
CC0 Public Domain
Commercial use
the licence allows 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 itStylasterina through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0.