Primitia

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
- PrimitiidaePBDB
- Diet
- suspension feederPBDB, for Palaeocopida
- Life habit
- epifaunalPBDB, for Palaeocopida
- Motility
- actively mobilePBDB, for Ostracoda
- Vision
- limitedPBDB, for Ostracoda
- Environment
- marinePBDB, for Ostracoda
Time the record covers
At least 111 million years on record.
The record covers at least 477.1 Mya to 365.2 Mya. No occurrence read is dated outside 486.85 Mya to 358.86 Mya.
133 occurrences of Primitia on record, most of them in the Ordovician. 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
133 occurrences- Ordovician91%
- Silurian2%
- Devonian8%
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
63 formations
- Ust'Stolbovaya Formation · Kirenskian-Kudrian Group31
- Chasmops Limestone Formation4
- Decorah Shale Formation3
- Scales Shale Formation · Maquoketa Group3
- Kirenskii-Kudrinskii Formation · Krivaya Luka Group3
- Amarkan Formation3
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The named rock units Primitia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 39 further formations hold fewer occurrences each and are not listed. 14 occurrences have no formation on record, which is common for older literature.
Primitia and its relatives
OrdovicianWhere Primitia and its relatives were recorded in the Ordovician.
Found in the same rock
1,251 taxa- Quadrilobella23 sites
- Schmidtella23 sites
- Fidelitella20 sites
- Aparchites19 sites
- Primitiella16 sites
- Pribylina12 sites
- Dalmanella11 sites
- Leperditella11 sites
- Tetradella11 sites
- Bollia10 sites
- Climacograptus10 sites
- Euprimitia10 sites
- Hyolithes10 sites
- Bythocypris cylindrica9 sites
- Ctenobolbina9 sites
- Ctenodonta9 sites
- Ginella primitiformis9 sites
- Illaenus9 sites
- Lingulella9 sites
- Lonchodomas9 sites
- Modiolopsis9 sites
- Onniella9 sites
- Reuschella9 sites
- Skenidioides9 sites
The Paleobiology Database records 112 sites for Primitia, 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
55 references- Ordovician of the Tungus Basin (Siberian Platform). Field excursion guidebook31
- Middle and Upper Ordovician Ostracoda of Minnesota and Iowa8
- Evolution, succession & replacement in the type Caradoc (Ordovician) benthic faunas of England7
- Ordovician of the siberian Platform: Key section on the Kulumbe River4
- The Chasmops Series of the Kullatorp Core4
- On the Chasmops series of Jemtland and Sodermanland (Tvaren)4
- Ordovician siberian Platform: Fauna and stratigraphy of the Lena Facial Zone; Novosibirski; Nauka Sib. Birch3
- Ostracoda of the superfamilies Drepanellacea, Hollinacea, Leperditellacea, and Healdiacea from the Decorah Shale of Minnesota3
- Regional stratigraphic table of Eastern China, AnHui Province3
- Fossil communities of the lower Trenton Group (Middle Ordovician) of central and northwestern New York State3
- Upper Ordovician Ostracods from the Oslo region, Norway3
- Upper Ordovician faunas of Ontario and Quebec3
Each of the 133 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. 43 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 Primitia
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- CC0
- Commercial use
- the licence allows it
No 3D scan of Primitia 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 itPrimitiidae through timeFormations of the OrdovicianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Jones and Holl 1923