Nevadia
Nevadia is an extinct genus of redlichiid trilobites, with species of average size. It lived during the Atdabanian stage, which lasted from 530 to 524 million years ago, in what are today Western Canada, the Western United States, and Mexico.

Uncredited · Attribution · 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
- NevadiidaePBDB
- Diet
- deposit feederPBDB, for Redlichiida
- Life habit
- low-level epifaunalPBDB, for Redlichiida
- Motility
- fast-movingPBDB, for Redlichiida
- Vision
- well-developedPBDB, for Nevadiidae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At least 5.7 million years on record.
The record covers at least 521 Mya to 515.3 Mya. No occurrence read is dated outside 538.8 Mya to 486.85 Mya.
39 occurrences of Nevadia 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
39 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
9 formations
- Poleta Formation12
- Campito Formation12
- Mural Tah Formation6
- Sekwi Formation3
- Puerto Blanco Formation · Fallotaspis Group2
- Old Dominion Limestone Formation1
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The named rock units Nevadia has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Nevadia and its relatives
CambrianWhere Nevadia and its relatives were recorded in the Cambrian.
Found in the same rock
73 taxa- Bradyfallotaspis nicolascagei3 sites
- Cirquella nelsoni3 sites
- Hyolithellus3 sites
- Judomia absita3 sites
- Mesonacis fremonti3 sites
- Obolella excelsis3 sites
- Obolella vermilionensis3 sites
- Archaeaspis macropleuron2 sites
- Archaeocyatha2 sites
- Bradyfallotaspis coriae2 sites
- Bradyfallotaspis sekwiensis2 sites
- Holmiella domackae2 sites
- Hyolithia indet.2 sites
- Judomia2 sites
- Kutorgina2 sites
- Kutorgina cingulata2 sites
- Montezumaspis cometes2 sites
- Mummaspis delgadoae2 sites
- Olenellidae2 sites
- Palmettaspis consorta2 sites
- Paterina2 sites
- Ajacicyathus1 site
- Ajacicyathus nevadensis1 site
- Alisina1 site
The Paleobiology Database records 34 sites for Nevadia, 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
15 references- Phylogenetic analysis of the Olenellina Walcott, 1890 (Trilobita, Cambrian)11
- Walcott's Lower Cambrian Olenellid trilobite collection 61k, Mount Robson Area, Canadian Rocky Mountains6
- Cambrian Brachiopoda4
- New olenelline trilobites from the Northwest Territories, Canada, and the phylogenetic placement of Judomia absita Fritz, 19733
- Esmeraldina rowei and associated Lower Cambrian trilobites (1f fauna) at the base of Walcott's Waucoban Series, southern Great Basin, U.S.A.3
- Phylogenetic analysis of some basal Early Cambrian trilobites, the biogeographic origins of the Eutrilobita, and the timing of the Cambrian radiation2
- A second candidate position for the base of the Montezuman2
- Proposed stratotype section and point for the base of the Dyeran Stage1
- Lower Cambrian trilobites, donation, and correlation of the Puerto Blanco formation, Sonora Mexico1
- Upper Proterozoic and Cambrian rocks in the Caborca Region, Sonora, Mexico - physical stratigraphy, biostratigraphy, paleocurrent studies, and regional relations1
- Stratigraphy and structure, Death Valley, California1
- Archaeocyathid localities in Washington, British Columbia and the Yukon Territory1
Each of the 39 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. 3 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 Nevadia
- Source
- Wikipedia/Commons
- Credit
- nobody named on the record
- Licence
- Attribution
- 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.
The description on this site
- Source
- Wikipedia, “Nevadia”
- 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 itNevadiidae through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1910