Ninadiscus
Ninadiscus is a genus of Eodiscinid trilobite belonging to the family Weymouthiidae Kobayashi (1943), Order Agnostida Salter (1864). It lived during the Botomian Stage = late Lower Cambrian Stage 4 ; the upper Botomian boundary corresponds to the base of the Middle Cambrian, the Miaolingian Series and Wuliuan Stage.

Dwergenpaartje · CC BY-SA 3.0 · 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
- WeymouthiidaePBDB
- Diet
- detritivorePBDB, for Agnostida
- Life habit
- epifaunalPBDB, for Agnostida
- Motility
- slow-movingPBDB, for Agnostida
- Vision
- blindPBDB, for Weymouthiidae
Time the record covers
At most 3.9 million years on record.
The one occurrence read is dated to somewhere between 512.1 Mya and 508.2 Mya, which is a dating window rather than a span.
1 occurrence of Ninadiscus 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
1 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
1 formation
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The named rock units Ninadiscus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Ninadiscus and its relatives
CambrianWhere Ninadiscus and its relatives were recorded in the Cambrian.
Found in the same rock
7 taxa- Abakolia pauca1 site
- Kooteniella1 site
- Kooteniella slatkowskii1 site
- Menneraspis1 site
- Neocobboldia1 site
- Neopagetina1 site
- Parapagetia patulus1 site
The Paleobiology Database records 1 site for Ninadiscus, and this reads all of them. The number is how many of those sites it was catalogued from too.
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
1 referenceEach of the 1 occurrence 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 the Paleobiology Database's own record for the work.
Media and terms
Media content1
Picture of Ninadiscus
- Source
- Wikipedia/Commons
- Credit
- Dwergenpaartje
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
The description on this site
- Source
- Wikipedia, “Ninadiscus”
- 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 itWeymouthiidae through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Korobov 1980