Cedaria
Cedaria is an extinct genus of trilobites from the late Cambrian.

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
- CedariidaePBDB
- Diet
- carnivorePBDB, for Trilobita
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB, for Cedariidae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 2.5 million years on record.
The record covers at least 499.5 Mya to 497 Mya. No occurrence read is dated outside 504.5 Mya to 486.85 Mya.
58 occurrences of Cedaria on record, most of them in the Cambrian. 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
58 occurrences- Cambrian100%
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
16 formations
- Rabbitkettle Formation11
- Holm Dal Formation · Tavsens Iskappe Group11
- Riley Formation10
- Woods Hollow Boulders Formation8
- Pilgrim Formation3
- Weeks Formation3
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The named rock units Cedaria has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Cedaria and its relatives
CambrianWhere Cedaria and its relatives were recorded in the Cambrian.
Found in the same rock
204 taxa- Kormagnostus seclusus15 sites
- Modocia15 sites
- Blountia13 sites
- Kormagnostus13 sites
- Menomonia12 sites
- Crepicephalus10 sites
- Agnostus9 sites
- Onchonotopsis9 sites
- Bynumia8 sites
- Lingulella8 sites
- Pearylandia8 sites
- Pseudagnostina douvillei8 sites
- Tricrepicephalus texanus8 sites
- Catillicephala rotunda7 sites
- Hemirhodon7 sites
- Proagnostus bulbus7 sites
- Tomagnostella exsculpta7 sites
- Cedarina6 sites
- Conopolus granulus6 sites
- Dorispira holmdalense6 sites
- Elrathia6 sites
- Genevievella6 sites
- Marjumia6 sites
- Meteoraspis6 sites
The Paleobiology Database records 54 sites for Cedaria, 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
18 references- Molluscs of the Holm Dal Formation (late Middle Cambrian), central North Greenland11
- The Faunas of the Riley Formation in Central Texas10
- Trilobites of the Marjuman and Steptoean stages (Upper Cambrian), Rabbitkettle Formation, southern Mackenzie Mountains, northwest Canada9
- Late Cambrian and Early Ordovician Trilobites from the Marathon Uplift, Texas8
- unpublished data4
- Trilobites from the Cedaria prolifica Zone (Cambrian, upper Guzhangian) of the Precordillera of Mendoza, western Argentina2
- Probable predation on Upper Cambrian trilobites and its relevance for the extinction of soft-bodied Burgess Shale-type animals2
- Cambrian trilobites of East-Central Alaska2
- The diverse radiodont fauna from the Marjum Formation of Utah, USA (Cambrian: Drumian)1
- Trilobite biostratigraphy of the Cambrian 5 and Drumian stages, Series 3 (Laurentian Delamaran, Topazan, and Marjuman stages, Lincolnian Series) of the lower Emigrant Formation at Clayton Ridge, Esmeralda County, Nevada1
- Evenness, richness and the Cambrian-Paleozoic faunal transition in North America: an assemblage-level perspective1
- Stratotype boundary of the Steptoean Stage, McGill Nevada1
Each of the 58 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. 6 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 Cedaria
- Source
- Wikipedia/Commons
- Credit
- Dwergenpaartje
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan of Cedaria was found in Sketchfab.
Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Cedaria”
- 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 itCedariidae through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1924