Cyrtometopus
Uncredited · 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
- CheiruridaePBDB
- Diet
- carnivorePBDB, for Cheiruridae
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 27 million years on record.
The record covers at least 477.1 Mya to 449.5 Mya. No occurrence read is dated outside 486.4 Mya to 443.1 Mya.
67 occurrences of Cyrtometopus 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
67 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
11 formations
- Volkhov Formation28
- Holen Formation16
- Lynna Formation4
- Komstad Formation4
- San Juan Formation3
- Oland C Formation3
Loading coastlines…
The named rock units Cyrtometopus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.
Cyrtometopus and its relatives
OrdovicianWhere Cyrtometopus and its relatives were recorded in the Ordovician.
Found in the same rock
261 taxa- Linguloidea25 sites
- Apomatella ingrica24 sites
- Paurorthis24 sites
- Antigonambonites planus23 sites
- Asaphus (Asaphus) lepidurus22 sites
- Lonchodomas volborthi21 sites
- Pseudocrania21 sites
- Ranorthis20 sites
- Ingria nefedjevi18 sites
- Paralenorthis orbicularis18 sites
- Pterygometopus sclerops18 sites
- Illaenus17 sites
- Cybele bellatula16 sites
- Nileus16 sites
- Nothortis sp.16 sites
- Porambonites planus16 sites
- Productorthis parallela16 sites
- Eosiphonotreta15 sites
- Metopolichas14 sites
- Remopleurides14 sites
- Scotoharpes spasskii14 sites
- Megistaspis (Megistaspidella) acuticauda13 sites
- Megistaspis12 sites
- Krattaspis paraspinosis11 sites
The Paleobiology Database records 57 sites for Cyrtometopus, 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
16 references- Upper Arenig trilobite biostratigraphy and sea-level changes at Lynna River near Volkhov, Russia29
- The Asaphus Limestone in northernmost Öland19
- Trilobite systematies, biostratigraphy and palaeoecology of the Lower Ordovician Komstad Limestone and Huk Forrnations, southern Scandinavia4
- Available generic names for trilobites2
- Description of the upper portion of the drill-core from Finngrundet in the South Bothnian Bay2
- The highest-latitude Foliomena Fauna (Upper Ordovician, Portugal) and its palaeogeographical and palaeoecological significance1
- Legend of the Central European series of sheets of the State Geological Map of the Russian Federation, scale 1:1,000,000 (third generation)1
- Ordovician trilobites1
- Benthic assemblages in the northwestern of Gondwana: A test of the Ordovician evolutionary radiation model1
- The Ordovician trilobites from the Iberian Chains in the province of Aragon, NE Spain, 1: The trilobites of the Cystoid Limestone (Ashgill Series)1
- Nuevos trilobites de la Formacion San Juan (Ordovicico temprano), Precordillera de San Juan y La Rioja, Argentina1
- The Middle Ordovician of the Oslo region, Norway, 33. Trilobites from the lowermost part of the Ogygiocaris Series1
Each of the 67 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. 4 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 Cyrtometopus
- Source
- Wikidata/Commons
- Credit
- nobody named on the record
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
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 itCheiruridae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Angelin 1854)