Marjumia
No picture of Marjumia 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 Marjumia, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- MarjumiidaePBDB
- Diet
- carnivorePBDB, for Trilobita
- Life habit
- low-level epifaunalPBDB, for Trilobita
- Motility
- fast-movingPBDB, for Trilobita
- Vision
- well-developedPBDB, for Marjumiidae
- Environment
- marinePBDB, for Trilobita
Time the record covers
At most 13 million years on record.
Every occurrence read is dated to somewhere between 509.7 Mya and 497 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
24 occurrences of Marjumia 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
24 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
5 formations
- Holm Dal Formation · Tavsens Iskappe Group13
- Pika Formation6
- Hillard Limestone Formation2
- Duchesnay Formation2
- March Point Formation1
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The named rock units Marjumia has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Marjumia and its relatives
CambrianWhere Marjumia and its relatives were recorded in the Cambrian.
Found in the same rock
104 taxa- Kormagnostus seclusus11 sites
- Modocia11 sites
- Catillicephala rotunda10 sites
- Pearylandia10 sites
- Hemirhodon9 sites
- Cedaria8 sites
- Conopolus granulus8 sites
- Onchonotopsis8 sites
- Bynumia7 sites
- Elrathia7 sites
- Olenoides7 sites
- Proagnostus bulbus7 sites
- Dorispira holmdalense6 sites
- Peronopsis6 sites
- Stenothecoides groenlandica6 sites
- Tomagnostella exsculpta6 sites
- Bolaspidella stymacantha5 sites
- Oidalagnostus trispinifer5 sites
- Tavsenia5 sites
- Welleraspis newfoundlandensis5 sites
- Balderia4 sites
- Crepicephalus4 sites
- Cryptoderaspis metisensis4 sites
- Durinia4 sites
The Paleobiology Database records 21 sites for Marjumia, 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
6 references- Molluscs of the Holm Dal Formation (late Middle Cambrian), central North Greenland12
- Mid-Cambrian (Marjuman) trilobites from the Pika Formation, southern Canadian Rocky Mountains, Alberta6
- A new, Middle Cambrian, Burgess Shale-type biota, Bolaspidella zone, Chancellor Basin, southeastern British Columbia2
- Cambrian trilobites of East-Central Alaska2
- Trilobites of the Holm Dal Formation (late Middle Cambrian), central North Greenland1
- Middle and upper Cambrian Faunas from western Newfoundland1
Each of the 24 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 Marjumia 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 Marjumia, or no answer at all. This entry cannot say which.
No 3D scan of Marjumia was found in Sketchfab.
Smithsonian Open Access and MorphoSource were 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 itMarjumiidae through timeFormations of the CambrianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Walcott 1916