Protocrisina

Not Protocrisina. This is Protocrisina Ulrich, 1889, a relative — both are Enalloporidae.
Bekker · CC BY-NC 4.0 · via GBIF. 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
- TubuliporidaePBDB
- Diet
- suspension feederPBDB, for Tubuliporata
- Life habit
- epifaunalPBDB, for Tubuliporata
- Motility
- stationary, attachedPBDB, for Tubuliporata
- Vision
- blindPBDB, for Stenolaemata
- Environment
- marinePBDB, for Lophophorata
Time the record covers
At least 13 million years on record.
The record covers at least 458.2 Mya to 445.2 Mya. No occurrence read is dated outside 471.3 Mya to 443.1 Mya.
5 occurrences of Protocrisina 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
5 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
4 formations
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The named rock units Protocrisina 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.
Protocrisina and its relatives
OrdovicianWhere Protocrisina and its relatives were recorded in the Ordovician.
Found in the same rock
140 taxa- Amplexopora3 sites
- Cincinnaticrinus3 sites
- Dekayia3 sites
- Ectenocrinus3 sites
- Geisonoceras3 sites
- Merocrinus3 sites
- Newportopora3 sites
- Pachydictya3 sites
- Platystrophia3 sites
- Prasopora3 sites
- Stictopora3 sites
- Acodus2 sites
- Ceraurus2 sites
- Cheirocrinus2 sites
- Conularia2 sites
- Cymatonota2 sites
- Drepanoistodus2 sites
- Endoceras2 sites
- Eridotrypa2 sites
- Flexicalymene2 sites
- Graptodictya2 sites
- Hallopora2 sites
- Heterocrinus2 sites
- Hormotoma2 sites
The Paleobiology Database records 5 sites for Protocrisina, 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
2 references- Fossil Communities of the Middle Trenton Group (Ordovician) of New York State3
- The early Paleozoic Bryozoa of the Baltic Provinces2
Each of the 5 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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Protocrisina Ulrich, 1889
- Source
- GBIF
- Credit
- Bekker
- Licence
- CC BY-NC 4.0
- Commercial use
- the licence does not allow it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itTubuliporidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Ulrich 1890