Eucystis

via iDigBio · 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
- SphaeronitidaePBDB
- Diet
- suspension feederPBDB, for Blastozoa
- Life habit
- epifaunalPBDB, for Blastozoa
- Motility
- stationaryPBDB, for Blastozoa
- Environment
- marinePBDB, for Echinodermata
Time the record covers
At least 64 million years on record.
The record covers at least 458.2 Mya to 393.47 Mya. No occurrence read is dated outside 469.4 Mya to 387.95 Mya.
22 occurrences of Eucystis on record, most of them in the Ordovician. 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
22 occurrences- Ordovician68%
- Silurian5%
- Devonian27%
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
10 formations
- Boda Limestone Formation6
- Cystoid Limestone Formation4
- Husbergøya Formation3
- Suchomasty Formation2
- Rosebank Shale Formation1
- Kraluv Dvur Formation1
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The named rock units Eucystis 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.
Eucystis and its relatives
OrdovicianWhere Eucystis and its relatives were recorded in the Ordovician.
Found in the same rock
398 taxa- Crinoidea3 sites
- Primaspis evoluta3 sites
- Ristnacrinus3 sites
- Ambonychinia corrugata2 sites
- Amphilichas latifrons2 sites
- Caryocrinites2 sites
- Cliftonia psittacina2 sites
- Cryptothyrella terebratulina2 sites
- Cyclocharax2 sites
- Cyphoproetus2 sites
- Decoroproetus asellus2 sites
- Dicranopeltis polytoma2 sites
- Eurogrewingkia bilateralis2 sites
- Heliocrinites2 sites
- Heliocrinites minutus2 sites
- Holotrachelus punctillosus2 sites
- Illaenus2 sites
- Isocolus sjogreni2 sites
- Juglandocrinus sdzuyi2 sites
- Lichas affinis2 sites
- Lioharpes crassimargo2 sites
- Malovicrinus2 sites
- Mespilocystites tregarvanicus2 sites
- Orbiculoidea gibba2 sites
The Paleobiology Database records 17 sites for Eucystis, 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
8 references- The Diploporita of the Oslo region, Norway6
- Sphaeronitoidea Neumayr of the Lower Paleozoic of Bohemia5
- Sur quelques echinodermes (Cystoides et crinoides) de l' Ashgil d'Aragon (Espagne)4
- Evolution and Functional Morphology of the Cystoid Sphaeronites in Britain and Scandinavia3
- Late Silurian echinoderms from the Yass Basin, New South Wales - the earliest holothurian body fossil and two diploporitan cystoids (Sphaeronitidae and Holocystitidae)1
- Trilobite assemblages in the Devonian of the Barrandian area and their relations to palaeoenvironments1
- The biostratigraphy of the Ordovician of Bohemia1
- The Lower Palaeozoic fossils of the Northern Shan States, Burma. With a section of Ordovician cystidea by F. A. Bather [q.v.]1
Each of the 22 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 Eucystis
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Eucystis 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 itSphaeronitidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Angelin 1878