Aphelaspis
via iDigBio · CC0 · 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
- AphelaspidaePBDB
- Diet
- carnivorePBDB, for Trilobita
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB, for Aphelaspidae
- Environment
- marinePBDB, for Trilobita
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 506.5 Mya to 486.85 Mya.
149 occurrences of Aphelaspis 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
149 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
25 formations
- Riley Formation64
- Nolichucky Formation · Consauga Group14
- Deadwood Formation12
- Rabbitkettle Formation11
- Orr Formation7
- Nounan Formation5
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The named rock units Aphelaspis has been recovered from, largest first. Drawn where the rock is now, not where it formed. One further formation holds fewer occurrences and is not listed. 4 occurrences have no formation on record, which is common for older literature.
Aphelaspis and its relatives
CambrianWhere Aphelaspis and its relatives were recorded in the Cambrian.
Found in the same rock
175 taxa- Cheilocephalus brevilobus23 sites
- Angulotreta triangularis18 sites
- Glaphyraspis parva14 sites
- Pseudagnostus communis14 sites
- Glaphyraspis ornata12 sites
- Labiostria conveximarginata12 sites
- Glyptagnostus reticulatus11 sites
- Innitagnostus inexpectans9 sites
- Dunderbergia variagranula8 sites
- Porifera8 sites
- Acmarhachis acuta7 sites
- Dictyonina perforata7 sites
- Pseudagnostus7 sites
- Blountia bristolensis6 sites
- Cheilocephalus6 sites
- Olenaspella regularis6 sites
- Angulotreta triangularis digitalis5 sites
- Aspidagnostus rugosus5 sites
- Eugonocare (Olenaspella) separatum5 sites
- Homagnostus obesus5 sites
- Listroa toxoura5 sites
- Glaphyraspis4 sites
- Opisthotreta4 sites
- Proceratopyge4 sites
The Paleobiology Database records 125 sites for Aphelaspis, 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- The Faunas of the Riley Formation in Central Texas64
- Trilobites, Biostratigraphy, and Lithostratigraphy of the Crepicephalus and Aphelaspis zones, Lower Deadwood formation (Marjuman and Steptoean Stages, Upper Cambrian), Black Hills, South Dakota12
- Trilobites of the Marjuman and Steptoean stages (Upper Cambrian), Rabbitkettle Formation, southern Mackenzie Mountains, northwest Canada11
- Upper Cambrian trilobite faunas of Northeastern Tennessee11
- Upper Cambrian Orr Formation: Its Subdivisions and Correlatives in Western Utah7
- Glyptagnostus and associated trilobites in the United States6
- Cambrian trilobites from the Nounan Dolomite and lower St. Charles Formation (upper Marjuman to lower Sunwaptan; Miaolingian to Furongian Series), Smithfield Canyon, northern Utah5
- Trilobites of the Late Cambrian Pterocephaliid Biomere in the Great Basin, United States4
- Evenness, richness and the Cambrian-Paleozoic faunal transition in North America: an assemblage-level perspective3
- An Aphelaspis Zone faunule from Logan, Montana3
- A Cambrian Aphelaspis fauna from Steele Butte, near Boulder, Wyoming3
- Stratotype boundary of the Steptoean Stage, McGill Nevada2
Each of the 149 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 Aphelaspis
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Aphelaspis 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 itAphelaspidae through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Resser 1935