Aacocrinus

Aacocrinus is a genus of extinct sea lily from the family Actinocrinitidae.

Aacocrinus

via iDigBio · CC0 · via iDigBio. 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
ActinocrinitinaePBDB
Diet
suspension feederPBDB, for Monobathrida
Life habit
upper-level epifaunalPBDB, for Monobathrida
Motility
stationary, attachedPBDB, for Monobathrida
Vision
blindPBDB, for Crinoidea
Environment
marinePBDB, for Echinodermata

Time the record covers

At most 9 million years on record.

Every occurrence read is dated to somewhere between 351.9 Mya and 342.9 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.

Carboniferous — about 2 of 2 occurrencesCarboniferous352–352 Mya — about 0.0 occurrences352–351 Mya — about 0.1 occurrences351–351 Mya — about 0.1 occurrences351–351 Mya — about 0.1 occurrences351–350 Mya — about 0.1 occurrences350–350 Mya — about 0.1 occurrences350–350 Mya — about 0.1 occurrences350–349 Mya — about 0.1 occurrences349–349 Mya — about 0.1 occurrences349–349 Mya — about 0.1 occurrences349–348 Mya — about 0.1 occurrences348–348 Mya — about 0.1 occurrences348–348 Mya — about 0.1 occurrences348–347 Mya — about 0.1 occurrences347–347 Mya — about 0.1 occurrences347–347 Mya — about 0.1 occurrences347–346 Mya — about 0.1 occurrences346–346 Mya — about 0.1 occurrences346–346 Mya — about 0.1 occurrences346–345 Mya — about 0.1 occurrences345–345 Mya — about 0.1 occurrences345–345 Mya — about 0.1 occurrences345–344 Mya — about 0.1 occurrences344–344 Mya — about 0.1 occurrences344–344 Mya — about 0.1 occurrences344–343 Mya — about 0.1 occurrences343–343 Mya — about 0.1 occurrences343–343 Mya — about 0.0 occurrences352.4 Mya342.4 Mya

2 occurrences of Aacocrinus on record, most of them in the Carboniferous. 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

2 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

Lake Valley — 32.72°N, 107.57°W

Loading coastlines…

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

Aacocrinus and its relatives

Carboniferous

Where Aacocrinus and its relatives were recorded in the Carboniferous.

Found in the same rock

28 taxa

The Paleobiology Database records 1 site for Aacocrinus, 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 2 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content1

Picture of Aacocrinus

Source
iDigBio
Credit
via iDigBio
Licence
CC0
Commercial use
the licence allows it

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 itActinocrinitinae through timeFormations of the CarboniferousThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Bowsher 1955