Blountia
via iDigBio · via iDigBio. 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
- KingstoniidaePBDB
- Diet
- carnivorePBDB, for Trilobita
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB, for Kingstoniidae
- 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.
103 occurrences of Blountia 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
103 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
18 formations
- Deadwood Formation33
- Pilgrim Formation8
- Warrior Formation8
- Orr Formation8
- Riley Formation8
- Woods Hollow Boulders Formation7
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The named rock units Blountia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Blountia and its relatives
CambrianWhere Blountia and its relatives were recorded in the Cambrian.
Found in the same rock
192 taxa- Kingstonia26 sites
- Coosella20 sites
- Crepicephalus20 sites
- Pseudagnostina douvillei15 sites
- Kingstonia walcotti14 sites
- Tricrepicephalus coria14 sites
- Coosia alethes13 sites
- Kormagnostus seclusus13 sites
- Kormagnostus12 sites
- Tricrepicephalus12 sites
- Genevievella11 sites
- Coosina ariston10 sites
- Blountiella9 sites
- Nahannagnostus nganasanicus9 sites
- Terranovella dorsalis9 sites
- Ankoura8 sites
- Cedaria8 sites
- Crepicephalus buttsi8 sites
- Uncaspis8 sites
- Menomonia7 sites
- Meteoraspis7 sites
- Modocia7 sites
- Crepicephalus auratus6 sites
- Glaphyraspis6 sites
The Paleobiology Database records 85 sites for Blountia, 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
27 references- Trilobites, Biostratigraphy, and Lithostratigraphy of the Crepicephalus and Aphelaspis zones, Lower Deadwood formation (Marjuman and Steptoean Stages, Upper Cambrian), Black Hills, South Dakota27
- Systematics of a survivor: the Cambrian kingstoniid trilobite Blountia Walcott, 1916 across the Marjuman-Steptoean (Guzhangian-Paibian) extinction interval in Laurentian North America8
- Upper Cambrian Orr Formation: Its Subdivisions and Correlatives in Western Utah8
- Fauna and paleoecology of the Upper Cambrian Warrior Formation of central Pennsylvania8
- The Faunas of the Riley Formation in Central Texas7
- Late Cambrian and Early Ordovician Trilobites from the Marathon Uplift, Texas7
- Trilobites of the Marjuman and Steptoean stages (Upper Cambrian), Rabbitkettle Formation, southern Mackenzie Mountains, northwest Canada5
- Early Upper Cambrian faunas of central Montana4
- Upper Cambrian (Marjuman-Steptoean) trilobites from the Port Au Port Group, western Newfoundland3
- Molluscs of the Holm Dal Formation (late Middle Cambrian), central North Greenland3
- Early Upper Cambrian Trilobites from Western Gaspé3
- unpublished data2
Each of the 103 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. 15 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 Blountia
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Blountia 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itKingstoniidae through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1916