Menomonia prooculis

Strickland, D. K. · CC BY 4.0 · via GBIF. 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
- MenomoniaPBDB
- Diet
- suspension feederPBDB, for Menomoniidae
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB, for Menomoniidae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At most 7 million years on record.
Every occurrence read is dated to somewhere between 506.5 Mya and 499.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
8 occurrences of Menomonia prooculis 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
8 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 Menomonia prooculis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Menomonia prooculis and its relatives
CambrianWhere Menomonia prooculis and its relatives were recorded in the Cambrian.
Found in the same rock
15 taxa- Dicellomus7 sites
- Cedarina dakotaensis6 sites
- Modocia nevadensis5 sites
- Arapahoia4 sites
- Modocia oweni4 sites
- Kingstonia3 sites
- Bolaspidella2 sites
- Cedarina cordillerae2 sites
- Hardyoides tenerus2 sites
- Welleraspis2 sites
- Bynumia eumus1 site
- Kormagnostus1 site
- Kormagnostus seclusus1 site
- Meteoraspis1 site
- Tricrepicephalus1 site
The Paleobiology Database records 8 sites for Menomonia prooculis, 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 8 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 content1

Picture of Menomonia prooculis
- Source
- GBIF
- Credit
- Strickland, D. K.
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itMenomonia through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Lochman 1944