Strophomena varsensis
No picture of Strophomena varsensis was found. Wikidata and iDigBio were searched and had none. Wikipedia and 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 Strophomena varsensis, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- StrophomenaPBDB
- Diet
- suspension feederPBDB, for Strophomenida
- Life habit
- epifaunalPBDB, for Strophomenida
- Motility
- stationaryPBDB, for Strophomenida
- Vision
- blindPBDB, for Strophomenata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At most 6.5 million years on record.
Every occurrence read is dated to somewhere between 449.6 Mya and 443.1 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
2 occurrences of Strophomena varsensis 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
2 occurrences- Ordovician100%
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
- Georgian Bay Formation · Nottawasaga Group2
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The named rock units Strophomena varsensis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Strophomena varsensis and its relatives
OrdovicianWhere Strophomena varsensis and its relatives were recorded in the Ordovician.
Found in the same rock
24 taxa- Atactoporella1 site
- Byssonychia grandis1 site
- Bythopora1 site
- Calapoecia huronensis1 site
- Catazyga headi1 site
- Columnaria alveolata1 site
- Cyclonema bilix1 site
- Favistella1 site
- Hebertella occidentalis1 site
- Helicelasma rusticum1 site
- Homotrypa1 site
- Homotrypella1 site
- Ischyrodonta1 site
- Orthoceras1 site
- Parisocrinus mulletensis1 site
- Paupospira tropidophora1 site
- Pholadomorpha pholadiformis1 site
- Pterinea demissa1 site
- Rheocrinus aduncus1 site
- Spyroceras1 site
- Stromatocerium huronense1 site
- Strophomena planumbona1 site
- Tetradium approximatum1 site
- Zygospira modesta1 site
The Paleobiology Database records 2 sites for Strophomena varsensis, and this reads all of them. The number is how many of those sites it was catalogued from too.
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
2 references- Late Ordovician channel-dwelling crinoids from southern Ontario, Canada1
- Palaeozoic geology of the Lake Simcoe Area, Ontario1
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. 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 Strophomena varsensis was found. Wikidata and iDigBio were searched and had none.
Wikipedia and 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 Strophomena varsensis, or no answer at all. This entry cannot say which.
No 3D scan of Strophomena varsensis was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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 itStrophomena through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Dyer 1923