Aglaspis
Aglaspis is the type genus of the family Aglaspididae within the arthropod order Aglaspidida. It lived on the seafloor in what is now Wisconsin during late Cambrian times.

Qohelet12 · CC BY-SA 4.0 · 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
- AglaspididaePBDB
- Diet
- carnivorePBDB
- Life habit
- nektobenthicPBDB
- Motility
- actively mobilePBDB
- Vision
- well-developedPBDB, for Aglaspidida
Time the record covers
At least 6.8 million years on record.
The record covers at least 497 Mya to 490.2 Mya. No occurrence read is dated outside 504.5 Mya to 486.85 Mya.
6 occurrences of Aglaspis 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
6 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
3 formations
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The named rock units Aglaspis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Aglaspis and its relatives
CambrianWhere Aglaspis and its relatives were recorded in the Cambrian.
Found in the same rock
88 taxa- Uarthrus instabilis3 sites
- Cyclopites vulgaris2 sites
- Glypharthrus thomasi2 sites
- Lingulella2 sites
- Acheilops1 site
- Acmarhachis typicalis1 site
- Aglaspoides1 site
- Aglaspoides semicircularis1 site
- Ammagnostus laiwuensis1 site
- Anabarochilina1 site
- Anabarochilina australis1 site
- Anomalocaris1 site
- Anomalocaris canadensis1 site
- Arapahoia1 site
- Arthropoda1 site
- Beckwithia typa1 site
- Bradoriida1 site
- Cambrorhytium fragilis1 site
- Cambrorhytium major1 site
- Canthylotreta1 site
- Cedaria minor1 site
- Cedarina1 site
- Clavagnostus spinosus1 site
- Cnidaria1 site
The Paleobiology Database records 5 sites for Aglaspis, 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
3 references- Aglaspidida (Arthropoda) from the Upper Cambrian of Wisconsin4
- The diverse radiodont fauna from the Marjum Formation of Utah, USA (Cambrian: Drumian)1
- Cambrian strata of Wisconsin1
Each of the 6 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. Each entry links to doi.org. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content2
Picture of Aglaspis
- Source
- Wikipedia/Commons
- Credit
- Qohelet12
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
CT scan
- Source
- MorphoSource
- Credit
- MPM Geology Collection
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Aglaspis sp. · MPM:P
The description on this site
- Source
- Wikipedia, “Aglaspis”
- 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 itAglaspididae through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Hall 1862