Ancyrocrinus

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
- GasterocomidaePBDB
- Diet
- suspension feederPBDB, for Cladida
- Life habit
- intermediate-level epifaunalPBDB, for Cladida
- Motility
- stationary, attachedPBDB, for Cladida
- Vision
- blindPBDB, for Crinoidea
- Environment
- marinePBDB, for Echinodermata
Time the record covers
At least 25 million years on record.
The record covers at least 413.02 Mya to 387.95 Mya. No occurrence read is dated outside 419.62 Mya to 382.31 Mya.
19 occurrences of Ancyrocrinus on record, most of them in the Devonian. 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
19 occurrences- Devonian100%
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
- Ludlowville Formation · Hamilton Group8
- Skaneateles Formation · Hamilton Group4
- Horlick Formation2
- Marcellus Formation · Hamilton Group1
- Saint-Fiacre Formation1
- Arkona Shale Formation1
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The named rock units Ancyrocrinus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Ancyrocrinus and its relatives
DevonianWhere Ancyrocrinus and its relatives were recorded in the Devonian.
Found in the same rock
218 taxa- Eldredgeops rana12 sites
- Elita fimbriata9 sites
- Athyris spiriferoides8 sites
- Greenops boothi8 sites
- Mediospirifer audaculus8 sites
- Platyceras8 sites
- Rhipidomella8 sites
- Bryozoa7 sites
- Crinoidea7 sites
- Cypricardinia indenta7 sites
- Favosites7 sites
- Heliophyllum halli7 sites
- Pholidostrophia7 sites
- Productella7 sites
- Rhipidomella vanuxemi7 sites
- Devonochonetes scitulus6 sites
- Fenestella6 sites
- Heterophrentis6 sites
- Longispina6 sites
- Nucleospira concinna6 sites
- Palaeoneilo constricta6 sites
- Protoleptostrophia perplana6 sites
- Stereolasma rectum6 sites
- Tropidoleptus carinatus6 sites
The Paleobiology Database records 19 sites for Ancyrocrinus, 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
9 references- Relative taxonomic and ecological stability in Devonian marine faunas of New York State: a test of coordinated stasis7
- Stratigraphy and Paleontology of the Jaycox Shale Member, Hamilton Group of the Finger Lakes Region of New York State4
- Palaeoecology and systematics of Early Devonian bivalves from the Horlick Formation, Ohio Range, Antarctica2
- Nouvelles espèces d’Ancyrocrinus et d’Ammonicrinus, crinoïdes à pédoncule spécialisé du Dévonien armoricain (Brest, France)1
- Silurian and Devonian crinoids from central Victoria1
- Depositional Environments and Sequences, "Pleurodictyum Zone," Ludlowville Formation of Western New York1
- The Occurrence and Paleoecology of Echinoderm Asseblages in the Ludlowville Shales (Middle Devonian) of western Erie County, New York1
- A new Brittle-star from the Middle Devonian Arkona Shale of Ontario1
- A Faunal Study of the Beechwood Limestone (Middle Devonian); Speed, Indiana1
Each of the 19 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 Ancyrocrinus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Ancyrocrinus was found in MorphoSource and Sketchfab.
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itGasterocomidae through timeFormations of the DevonianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1862