Phacopoidea
Phacopoidea is a superfamily of trilobites.

Didier Descouens · CC BY-SA 4.0 · 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
- PhacopinaPBDB
- Diet
- carnivorePBDB, for Phacopina
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 112 million years on record.
The record covers at least 471.3 Mya to 358.86 Mya. No occurrence read is dated outside 488.9 Mya to 353.7 Mya.
2,400 occurrences of Phacopoidea on record, most of them in the Devonian. 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
2,400 occurrences- Cambrianunder 1%
- Ordovician39%
- Silurian12%
- Devonian49%
- Carboniferousunder 1%
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
571 formations
- Ludlowville Formation · Hamilton Group113
- Jupiter Formation · Anticosti Group59
- Skaneateles Formation · Hamilton Group40
- Moscow Formation · Hamilton Group40
- Kahula Formation36
- Wocklum Limestone Formation30
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The named rock units Phacopoidea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 547 further formations hold fewer occurrences each and are not listed. 245 occurrences have no formation on record, which is common for older literature.
Phacopoidea and its relatives
DevonianWhere Phacopoidea and its relatives were recorded in the Devonian.
Found in the same rock
1,694 taxa- Eldredgeops rana80 sites
- Mucrospirifer mucronatus72 sites
- Rhipidomella62 sites
- Bryozoa60 sites
- Crinoidea52 sites
- Ambocoelia46 sites
- Phacops44 sites
- Aulocystis43 sites
- Douvillina43 sites
- Favosites43 sites
- Palaeoneilo43 sites
- Chonetoidea40 sites
- Platyceras39 sites
- Mediospirifer audaculus37 sites
- Fenestella35 sites
- Nucleospira34 sites
- Greenops boothi33 sites
- Strophomena31 sites
- Actinopteria30 sites
- Fistuliporidae30 sites
- Leptaena30 sites
- Longispina30 sites
- Protoleptostrophia30 sites
- Sowerbyella30 sites
The Paleobiology Database records at least 1,622 sites for Phacopoidea, and this reads 240 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
453 references- Early Silurian trilobites of Anticosti Island, Québec, Canada72
- Trilobites of the Genus Toxochasmops from the Ordovician of Estonia69
- Trilobite assemblages in the Devonian of the Barrandian area and their relations to palaeoenvironments61
- The Bohemian Lower Devonian Stages60
- Stratigraphy of the Lower Middle Ordovician of Tazewell County, Virginia48
- Trilobiten des juengeren Siluriums sowie des Unter- und Mitteldevons. I. Mit Beitraegen zur Silur-Devon-Stratigraphie einiger Gebiete Marokkos und Oberfrankens44
- Ordovician of the Tungus Basin (Siberian Platform). Field excursion guidebook32
- Upper Arenig trilobite biostratigraphy and sea-level changes at Lynna River near Volkhov, Russia32
- Pterygometopine Trilobites from the Ordovician of Baltoscandia30
- Relative taxonomic and ecological stability in Devonian marine faunas of New York State: a test of coordinated stasis29
- Redefinition, Stratigraphy and Depostional Environments of the Mottville Member (Hamilton Group) in Central and Eastern New York29
- Trilobiten des juengeren Siluriums sowie des Unter- und Mitteldevons. II.29
Each of the 2,400 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. 441 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 Phacopoidea
- Source
- Wikipedia/Commons
- Credit
- Didier Descouens
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
The description on this site
- Source
- Wikipedia, “Phacopoidea”
- 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 itPhacopina through timeFormations of the DevonianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hupe 1953