Streptelasma

Wilson44691 · CC0 · via Wikidata/Commons. 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
- StreptelasmatinaePBDB
- Diet
- suspension feederPBDB, for Rugosa
- Life habit
- epifaunalPBDB, for Rugosa
- Motility
- stationary, attachedPBDB, for Rugosa
- Vision
- blindPBDB, for Anthozoa
- Environment
- marinePBDB, for Rugosa
Time the record covers
At least 106 million years on record.
The record covers at least 471.3 Mya to 365.2 Mya. No occurrence read is dated outside 488.9 Mya to 358.86 Mya.
422 occurrences of Streptelasma 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
422 occurrences- Cambrianunder 1%
- Ordovician84%
- Silurian13%
- Devonian3%
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
128 formations
- Liberty Formation29
- Whitewater Formation24
- Johnson Spring Formation18
- Drakes Formation16
- Boola Beds Formation11
- Read Bay Formation11
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The named rock units Streptelasma has been recovered from, largest first. Drawn where the rock is now, not where it formed. 104 further formations hold fewer occurrences each and are not listed. 59 occurrences have no formation on record, which is common for older literature.
Streptelasma and its relatives
OrdovicianWhere Streptelasma and its relatives were recorded in the Ordovician.
Found in the same rock
1,444 taxa- Trepostomata64 sites
- Strophomena53 sites
- Hebertella occidentalis49 sites
- Bryozoa47 sites
- Platystrophia47 sites
- Rafinesquina alternata45 sites
- Hiscobeccus capax44 sites
- Grewingkia37 sites
- Isotelus34 sites
- Protaraea richmondensis28 sites
- Strophomena planumbona26 sites
- Rafinesquina25 sites
- Rhynchotrema24 sites
- Catenipora23 sites
- Crinoidea23 sites
- Plaesiomys subquadratus23 sites
- Lophospira22 sites
- Favosites20 sites
- Rhinidictya20 sites
- Receptaculites19 sites
- Holtedahlina sulcata16 sites
- Zygospira16 sites
- Dinorthis15 sites
- Hallopora15 sites
The Paleobiology Database records 352 sites for Streptelasma, and this reads 240 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
109 references- Gradient ecology of a biotic invasion: biofacies of the type Cincinnatian Series (Upper Ordovician), Cincinnati, Ohio region, USA63
- On the Taxonomy of the Genus Streptelasma HALL and a Description of some new Rugose Corals20
- Late Ordovician solitary rugose corals of the Stony Mountain Formation, southern Manitoba, and its equivalents19
- Ordovician cephalopod fauna of Baffin Island18
- Upper Ordovician Streptelasmatid Corals from Scandinavia17
- Otter Creek Coral Bed and Its Fauna, East-Central Kentucky15
- Cornwallis and Little Cornwallis Islands, District of Franklin, Northwest Territories15
- The palaeontology and stratigraphy of the Siluro-Devonian sediments of the Tyers Area, Gippsland, Victoria14
- Ordovik i silur Yuzhnogo Verkhoyanya (biostratigrafiya i paleontologiya) [The Ordovician and Silurian of the southern Verkhoyansk Range (biostratigraphy and paleontology)]12
- Ecological restructuring after extinction: the Late Ordovician (Mohawkian) of the eastern United States11
- Fossils from the Johnson Spring Formation, Middle Ordovician, Independence Quadrangle, California9
- Middle and Upper(?) Ordovician Rocks of Independence Quadrangle, California9
Each of the 422 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. 97 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 content1

Picture of Streptelasma
- Source
- Wikidata/Commons
- Credit
- Wilson44691
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Streptelasma was found in Smithsonian Open Access and Sketchfab.
MorphoSource 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 itStreptelasmatinae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1847