Protrochiscolithus

via iDigBio · CC0 · 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
- PalaeoporitidaePBDB
- Diet
- suspension feeder, photosymbioticPBDB, for Tabulata
- Life habit
- epifaunalPBDB, for Tabulata
- Motility
- stationary, attachedPBDB, for Tabulata
- Vision
- blindPBDB, for Anthozoa
Time the record covers
At least 4.7 million years on record.
The record covers at least 450.2 Mya to 445.5 Mya. No occurrence read is dated outside 458.2 Mya to 443.1 Mya.
12 occurrences of Protrochiscolithus 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
12 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
9 formations
- Caution Creek Formation · Churchill River Group2
- Chasm Creek Formation · Churchill River Group2
- Aberdeen Lake Formation1
- Bad Cache Rapids Formation1
- Red River Formation1
- Vaureal Formation1
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The named rock units Protrochiscolithus 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.
Protrochiscolithus and its relatives
OrdovicianWhere Protrochiscolithus and its relatives were recorded in the Ordovician.
Found in the same rock
118 taxa- Lobocorallium5 sites
- Catenipora4 sites
- Lyopora4 sites
- Manipora4 sites
- Megamyonia nitens4 sites
- Paleofavosites4 sites
- Trochonema coxi4 sites
- Bighornia3 sites
- Calapoecia3 sites
- Calapoecia anticostiensis3 sites
- Cyclendoceras3 sites
- Dinorthis occidentalis3 sites
- Hypsiptycha anticostiensis3 sites
- Lepidocyclus perlamellosa3 sites
- Nasutimena fluctuosa3 sites
- Palaeofavosites alveolaris3 sites
- Palaeophyllum3 sites
- Aulacera2 sites
- Aulacera undulata2 sites
- Beatricea nodulosa2 sites
- Bighornia patella2 sites
- Billingsites2 sites
- Calapoecia coxi2 sites
- Catenipora foerstei2 sites
The Paleobiology Database records 9 sites for Protrochiscolithus, 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
7 references- Ordovician paleontology of the Northern Hudson Bay lowland4
- Reefs during the multiple crises towards the Ordovician-Silurian boundary: Anticosti Island, eastern Canada, and worldwide2
- Montoya and related colonial corals2
- Evolution of the Late Ordovician orthid brachiopod Gnamptorhynchos Jin, 1989 from Platystrophia King, 1850, in North America1
- A Late Ordovician fossil assemblage from an outlier north of Aberdeen Lake, District of Keewatin1
- Ordovician megafauna, Melville Peninsula, southeastern District of Franklin1
- Upper Ordovician corals Chaetetipora and Sibiriolites from northern Ellesmere Island, District of Franklin1
Each of the 12 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 Protrochiscolithus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Protrochiscolithus 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 itPalaeoporitidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Troedsson 1928