Blountiella
Blountiella is an extinct genus from a well-known class of fossil marine arthropods, the trilobites. It lived from 501 to 490 million years ago during the Dresbachian faunal stage of the late Cambrian Period.
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
- AsaphiscidaePBDB
- Diet
- carnivorePBDB, for Trilobita
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB, for Asaphiscidae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At most 18 million years on record.
Every occurrence read is dated to somewhere between 504.5 Mya and 486.85 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
15 occurrences of Blountiella 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
15 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
5 formations
- Deadwood Formation10
- Nolichucky Formation · Consauga Group2
- Woods Hollow Boulders Formation1
- Petit Jardin Formation1
- East Arm Formation1
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The named rock units Blountiella has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Blountiella and its relatives
CambrianWhere Blountiella and its relatives were recorded in the Cambrian.
Found in the same rock
63 taxa- Blountia9 sites
- Coosia alethes9 sites
- Crepicephalus9 sites
- Kingstonia8 sites
- Pseudagnostina douvillei8 sites
- Kingstonia walcotti7 sites
- Tricrepicephalus tripunctatus6 sites
- Coosella5 sites
- Coosina ariston5 sites
- Tricrepicephalus coria5 sites
- Crepicephalus auratus4 sites
- Crepicephalus buttsi4 sites
- Hadragnostus modestus4 sites
- Kormagnostus seclusus4 sites
- Terranovella dorsalis4 sites
- Uncaspis4 sites
- Agnostogonus incognitus3 sites
- Ankoura3 sites
- Dresbachia3 sites
- Nahannagnostus nganasanicus3 sites
- Amiaspis2 sites
- Arapahoia2 sites
- Dicellomus appalachia2 sites
- Komaspidella lata2 sites
The Paleobiology Database records 15 sites for Blountiella, 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
6 references- Trilobites, Biostratigraphy, and Lithostratigraphy of the Crepicephalus and Aphelaspis zones, Lower Deadwood formation (Marjuman and Steptoean Stages, Upper Cambrian), Black Hills, South Dakota9
- Recent developments in western Newfoundland Cambro-Ordovician trilobite Biostratigraphy2
- Geology of the Bristol and Wallace quadrangles, Virginia1
- Stratigraphy of the Deadwood Formation Black Hills, South Dakota and Wyoming. MS Thesis South Dakota School of Mines and Technology. Rapid City. Crepicephalus horizon in the Deadwood Formation of South Dakota1
- Late Cambrian and Early Ordovician Trilobites from the Marathon Uplift, Texas1
- Cambrian geology and paleontology III. No. 5. Cambrian trilobites1
Each of the 15 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. 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 Blountiella
- 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 Blountiella 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, “Blountiella”
- 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 itAsaphiscidae through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Resser 1938