Acmarhachis typicalis
No picture of Acmarhachis typicalis was found. Wikidata and iDigBio were searched and had none. Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Acmarhachis typicalis, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- AcmarhachisPBDB
- Diet
- detritivorePBDB, for Agnostida
- Life habit
- epifaunalPBDB, for Agnostida
- Motility
- slow-movingPBDB, for Agnostida
- Vision
- blindPBDB, for Agnostidae
Time the record covers
At least 1.8 million years on record.
The record covers at least 497 Mya to 495.2 Mya. No occurrence read is dated outside 504.5 Mya to 486.85 Mya.
38 occurrences of Acmarhachis typicalis 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
38 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
10 formations
- Huaqiao Formation11
- Machari Formation · Yongwol Group8
- Zhumabai Formation6
- Spurs Formation · Mariner Group5
- Rabbitkettle Formation2
- Huayansi Formation2
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The named rock units Acmarhachis typicalis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Acmarhachis typicalis and its relatives
CambrianWhere Acmarhachis typicalis and its relatives were recorded in the Cambrian.
Found in the same rock
128 taxa- Talbotinella5 sites
- Ammagnostus antarcticus4 sites
- Catillicephalina glasgowensis4 sites
- Henadoparia integra4 sites
- Parayujinia4 sites
- Pseudagnostina douvillei4 sites
- Trilobita4 sites
- Carrosella3 sites
- Coosia3 sites
- Doremataspis3 sites
- Doremataspis contracta3 sites
- Jamrogia jamrogensis3 sites
- Proagnostus bulbus3 sites
- Tricrepicephalus texanus3 sites
- Aspidagnostus laevis2 sites
- Blountia2 sites
- Cedaria brevifrons2 sites
- Clavagnostus spinosus2 sites
- Crepicephalus2 sites
- Deiracephalus aster2 sites
- Dorypyge2 sites
- Glaphyraspis2 sites
- Henadoparia2 sites
- Meteoraspis2 sites
The Paleobiology Database records 11 sites for Acmarhachis typicalis, 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
11 references- Agnostid biostratigraphy across the Middle-Upper Cambrian boundary in Hunan, China9
- Upper Cambrian agnostoid trilobites from the Machari Formation,Yongwol, Korea8
- Ergaliev and Ergaliev, 20086
- An 'Acmarhachis typicalis' zone trilobite fauna from the Cambrian of Northern Victoria Land, Antarctica5
- Trilobites of the Marjuman and Steptoean stages (Upper Cambrian), Rabbitkettle Formation, southern Mackenzie Mountains, northwest Canada2
- Middle Cambrian stratigraphy and trilobite fauna of Taoyuan, NW Hunan2
- The Cambrian trilobites of western Zhejiang2
- The diverse radiodont fauna from the Marjum Formation of Utah, USA (Cambrian: Drumian)1
- The Khos-Nelege section of the Ogon'or Formation: a potential candidate for the GSSP of stage 10, Cambrian System1
- Stratotype boundary of the Steptoean Stage, McGill Nevada1
- Marjuman (Cambrian) agnostoid trilobites of the Cow Head Group, western Newfoundland1
Each of the 38 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 content0
No picture of Acmarhachis typicalis was found. Wikidata and iDigBio were searched and had none.
Wikipedia and Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Acmarhachis typicalis, or no answer at all. This entry cannot say which.
No 3D scan of Acmarhachis typicalis 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 itAcmarhachis through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Resser 1938