Cyphoproetus externus

via GBIF · 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
- CyphoproetusPBDB
- Diet
- deposit feederPBDB, for Proetida
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB, for Proetidae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At most 4.5 million years on record.
Every occurrence read is dated to somewhere between 443.1 Mya and 438.6 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
9 occurrences of Cyphoproetus externus on record, most of them in the Silurian. 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
9 occurrences- Silurian100%
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
7 formations
- Mulloch Hill Formation3
- Cape Schuchert Formation1
- Solvik Formation1
- Woodland Formation1
- Newlands Farm Formation1
- Moyerokan Formation1
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The named rock units Cyphoproetus externus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Cyphoproetus externus and its relatives
SilurianWhere Cyphoproetus externus and its relatives were recorded in the Silurian.
Found in the same rock
124 taxa- Calymene5 sites
- Deiphon5 sites
- Encrinurus squarrosus5 sites
- Hemiarges5 sites
- Leonaspis5 sites
- Platylichas5 sites
- Kosovopeltis4 sites
- Stenopareia4 sites
- Anacaenaspis callipareos3 sites
- Astroproetus scoticus3 sites
- Hadromeros elongatus3 sites
- Harpidella (Harpidella) newlandensis3 sites
- Neolichas silvestris3 sites
- Opsypharus3 sites
- Stenopareia glochin3 sites
- Acernaspis elliptifrons2 sites
- Acernaspis superciliexcelsis2 sites
- Acernaspis xynon2 sites
- Aegiria norvegica2 sites
- Clorilamnulella undata2 sites
- Decoroproetus farragatus2 sites
- Dicranopeltis2 sites
- Encrinurus2 sites
- Eoplectodonta (Eoplectodonta) duplicata2 sites
The Paleobiology Database records 9 sites for Cyphoproetus externus, 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
5 references- Scottish Silurian trilobites5
- Silurian communities of the Oslo Region, Norway1
- Oporniih razrez reki Moiero silura Sibirskoi platformih -The Silurian composit section of the Moiero River (Sibirian platform)1
- Llandovery trilobites from Washington Land, North Greenland1
- British Ordovician and Silurian Proetidae (Trilobita)1
Each of the 9 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 Cyphoproetus externus
- Source
- GBIF
- Credit
- via GBIF
- Licence
- CC BY-NC 4.0
- Commercial use
- the licence does not allow it
No 3D scan of Cyphoproetus externus 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 itCyphoproetus through timeFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Reed 1935)