Pricyclopyge
Pricyclopyge is a genus of trilobites assigned to the family Cyclopygidae that occurs throughout the Ordovician. Pricyclopyge had an extratropical distribution, and there is evidence that it lived in darker parts of the water column. Pricyclopyge has huge eyes, an inverted pear-shaped glabella, six thorax segments, with on the 3rd two small discs. Pricyclopyge is known from what are today China, the Czech Republic, France, and the United Kingdom.

Dwergenpaartje · CC BY-SA 3.0 · 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
- PricyclopyginaePBDB
- Diet
- microcarnivorePBDB, for Cyclopygidae
- Life habit
- nektonicPBDB, for Cyclopygidae
- Motility
- actively mobilePBDB, for Cyclopygidae
- Vision
- well-developedPBDB, for Cyclopygidae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 16 million years on record.
The record covers at least 477.1 Mya to 461 Mya. No occurrence read is dated outside 486.85 Mya to 458.2 Mya.
28 occurrences of Pricyclopyge 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
28 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
12 formations
- Llanfallteg Formation7
- Sarka Formation2
- Tøyen Formation2
- Dobrotivá Formation2
- Tankerville Formation1
- Pontyfenni Formation1
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The named rock units Pricyclopyge has been recovered from, largest first. Drawn where the rock is now, not where it formed. 7 occurrences have no formation on record, which is common for older literature.
Pricyclopyge and its relatives
OrdovicianWhere Pricyclopyge and its relatives were recorded in the Ordovician.
Found in the same rock
315 taxa- Ectillaenus9 sites
- Ormathops7 sites
- Ampyx5 sites
- Dionide5 sites
- Placoparia5 sites
- Stapeleyella inconstans5 sites
- Barrandia homfrayi4 sites
- Corrugatagnostus4 sites
- Degamella4 sites
- Barrandia3 sites
- Cyclopyge3 sites
- Ellipsotaphrus3 sites
- Girvanopyge3 sites
- Microparia3 sites
- Niobe (Niobella) bohlini3 sites
- Nobiliasaphus3 sites
- Novakella3 sites
- Selenopeltis3 sites
- Selenopeltis buchi3 sites
- Symphysurus angustatus3 sites
- Acanthograptus2 sites
- Anatifopsis2 sites
- Anatifopsis bohemica2 sites
- Archinacella2 sites
The Paleobiology Database records 27 sites for Pricyclopyge, 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
14 references- Ordovician (Llanvirn) Trilobites from SW Wales12
- Early Ordovician (Arenig) stratigraphy and faunas of the Carmarthen District, southwest Wales3
- Trilobites of the Hagastrand Member (Tøyen Formation, lowermost Arenig) from tbe Oslo Region, Norway, Part Il : Remaining non-asaphid groups2
- Trilobites of trinucleid, raphiophorid and cyclopygid associations from the Ordovician (Darriwilian – early Katian) of the west Balkhash region and Betpak-Dala, Central Kazakhstan1
- Complementary description of the Middle Ordovician trilobite associations1
- Nové poznatky ze šáreckého a dobrotivského souvrství (ordovik, stupeň darriwil) v severozápadní a severní části Prahy [New observations on Šárka and Dobrotivá Formation (Ordovician, Darriwilian Stage) in northwestern and northern surroundings of Prague]1
- Tremadocian Trilobites of the Prague Basin, Czech Republic1
- Chlupáč et al., 19981
- Trilobites ordoviciens du Massif armoricain1
- Description of the upper portion of the drill-core from Finngrundet in the South Bothnian Bay1
- Regional stratigraphic table of Eastern China, Jiangxi Province1
- Sur l'existence du genre Ormathops Delo 1935 (Zeliszkellinae, trilobite) dans les schistes a nodules ordoviciens du synclinal d'Ancenis (Massif armoricain)1
Each of the 28 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. 2 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 Pricyclopyge
- Source
- Wikipedia/Commons
- Credit
- Dwergenpaartje
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Pricyclopyge 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.
The description on this site
- 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 itPricyclopyginae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Richter and Richter 1954