Grewingkia
Grewingkia is a genus of extinct Paleozoic Rugose corals, found in Indiana. It contains at least one species, Grewingkia canadensis, which lived during the Ordovician Period.

Wilson44691 · Public Domain · via Wikipedia/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 15 million years on record.
The record covers at least 453.8 Mya to 438.6 Mya. No occurrence read is dated outside 471.3 Mya to 432.9 Mya.
198 occurrences of Grewingkia 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
198 occurrences- Ordovician98%
- Silurian2%
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
52 formations
- Beaverfoot Formation27
- Liberty Formation19
- Bad Cache Rapids Formation10
- Red River Formation10
- Whitewater Formation10
- Advance Formation8
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The named rock units Grewingkia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 28 further formations hold fewer occurrences each and are not listed. 23 occurrences have no formation on record, which is common for older literature.
Grewingkia and its relatives
OrdovicianWhere Grewingkia and its relatives were recorded in the Ordovician.
Found in the same rock
719 taxa- Trepostomata40 sites
- Rafinesquina alternata34 sites
- Salvadorea31 sites
- Streptelasma divaricans31 sites
- Zaphrenthis haysii30 sites
- Bryozoa29 sites
- Hiscobeccus capax27 sites
- Bighornia patella26 sites
- Hebertella occidentalis26 sites
- Platystrophia25 sites
- Strophomena planumbona24 sites
- Isotelus21 sites
- Strophomena18 sites
- Plaesiomys subquadratus17 sites
- Catenipora15 sites
- Protaraea richmondensis15 sites
- Receptaculites15 sites
- Hiscobeccus12 sites
- Streptelasma12 sites
- Deiracorallium11 sites
- Palaeophyllum11 sites
- Calapoecia9 sites
- Eochonetes clarksvillensis9 sites
- Rhynchotrema9 sites
The Paleobiology Database records 175 sites for Grewingkia, 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
40 references- Gradient ecology of a biotic invasion: biofacies of the type Cincinnatian Series (Upper Ordovician), Cincinnati, Ohio region, USA43
- Upper Ordovician to lowermost Silurian solitary rugose corals from the Beaverfoot Formation, southern Rocky Mountains, British Columbia and Alberta26
- Solitary rugose corals of the Upper Ordovician Montoya Group, Southern New Mexico and Westernmost Texas17
- Stromatoporaty i biostratigrafiya nizhnego paleozoya Mongolii [Stromatoporata and biostratigraphy of the Lower Paleozoic of Mongolia]11
- Some Additional Data on the Study of Ordovician Streptelasmids in Estonia11
- Microborings and growth in Late Ordovician halysitids and other corals10
- Solitary rugose corals of the Selkirk Member, Red River Formation (upper Middle or Upper Ordovician), southern Manitoba9
- Ordovician megafauna, Melville Peninsula, southeastern District of Franklin8
- Biofacies Replacement in a Sequence Stratigraphic Framework: Middle and Upper Ordovician of the Nashville Dome, Tennessee, USA7
- Corals of the Advance Formation (Upper Middle Ordovician), Northern Rocky Mountains of British Columbia7
- Late Ordovician solitary rugose corals of the Stony Mountain Formation, southern Manitoba, and its equivalents7
- Upper Ordovician Streptelasmatid Corals from Scandinavia5
Each of the 198 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. 28 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 Grewingkia
- Source
- Wikipedia/Commons
- Credit
- Wilson44691
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
The description on this site
- Source
- Wikipedia, “Grewingkia”
- Licence
- CC BY-SA 4.0
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. Dybowski 1873