Hemicosmitoida
No picture of Hemicosmitoida was found. Wikipedia, Wikidata and iDigBio were searched and had none. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Hemicosmitoida, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- RhombiferaPBDB
- Diet
- suspension feederPBDB, for Blastozoa
- Life habit
- epifaunalPBDB, for Blastozoa
- Motility
- stationaryPBDB, for Blastozoa
- Environment
- marinePBDB, for Echinodermata
Time the record covers
At least 43 million years on record.
The record covers at least 468 Mya to 425 Mya. No occurrence read is dated outside 478.8 Mya to 419.62 Mya.
132 occurrences of Hemicosmitoida on record, most of them in the Silurian. 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
132 occurrences- Ordovician45%
- Silurian55%
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
53 formations
- Scotch Grove Formation12
- Racine Formation8
- Jupiter Formation · Anticosti Group7
- Cystoid Limestone Formation6
- Rochester Shale Formation · Clinton Group5
- Osgood Shale Formation5
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The named rock units Hemicosmitoida has been recovered from, largest first. Drawn where the rock is now, not where it formed. 29 further formations hold fewer occurrences each and are not listed. 15 occurrences have no formation on record, which is common for older literature.
Hemicosmitoida and its relatives
SilurianWhere Hemicosmitoida and its relatives were recorded in the Silurian.
Found in the same rock
1,130 taxa- Eucalyptocrinites46 sites
- Caryocrinites45 sites
- Favosites27 sites
- Bryozoa26 sites
- Dimerocrinites25 sites
- Lecanocrinus25 sites
- Hemicosmites24 sites
- Atrypa22 sites
- Eospirifer radiatus21 sites
- Macrostylocrinus21 sites
- Plectatrypa20 sites
- Periechocrinus19 sites
- Stegerhynchus19 sites
- Caryocrinites ornatus18 sites
- Gastropoda18 sites
- Calliocrinus17 sites
- Dalmanites17 sites
- Eospirifer17 sites
- Rugosa17 sites
- Atrypa reticularis16 sites
- Atrypina16 sites
- Nautiloidea16 sites
- Platyceras16 sites
- Siphonocrinus16 sites
The Paleobiology Database records 108 sites for Hemicosmitoida, 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
34 references- Caradocian-Gedinnian echinoderm associations of Central and Eastern North America47
- Taxonomy, Functional Morphology and Palaeoecology of the Ordovician Cystoid Family Hemicosmitidae13
- Lithology and Fauna of the Caradoc series type sections in North Estonia8
- Anticosti Island, Québec7
- Sur quelques echinodermes (Cystoides et crinoides) de l' Ashgil d'Aragon (Espagne)6
- The identity of the British Ordovician cystoid ‘Hemicosmites rugatus Forbes'5
- Wenlockian fossil communities in New York State and adjacent areas: Paleontology and Paleoecology5
- The Silurian (Wenlockian) reef fauna of Southeastern Wisconsin4
- New data on the distribution of brachiopods in the Johvi Stage of North Estonia4
- Primitive stalked echinoderms from the Middle Ordovician (Darriwilian) of Bang Song Tho, Kanchanaburi, western Thailand3
- Osgood (Niagaran) bryozoans from the type area3
- Non-Crinoid Pelmatozoa from the Paleozoic of Sweden3
Each of the 132 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. 22 further references are not listed. 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 content0
No picture of Hemicosmitoida was found. Wikipedia, Wikidata and iDigBio were searched and had none.
Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Hemicosmitoida, or no answer at all. This entry cannot say which.
No 3D scan of Hemicosmitoida 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 itRhombifera through timeFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Jaekel 1918