Placognatha indet.
No picture of Placognatha indet. was found. Wikidata and Smithsonian Open Access were searched and had none. iDigBio and GBIF were not searched: the Paleobiology Database does not place Placognatha indet. firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed. Wikipedia did not answer, so this is what the others held rather than everything there is.
Time the record covers
At least 20 million years on record.
The record covers at least 445.2 Mya to 425 Mya. No occurrence read is dated outside 452.8 Mya to 422.7 Mya.
17 occurrences of Placognatha indet. on record, most of them in the Silurian. 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
17 occurrences- Ordovician6%
- Silurian94%
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
2 formations
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The named rock units Placognatha indet. has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Placognatha indet. and its relatives
SilurianWhere Placognatha indet. and its relatives were recorded in the Silurian.
Found in the same rock
27 taxa- Oenonites17 sites
- Kettnerites16 sites
- Chitinozoa14 sites
- Brachiopoda11 sites
- Mochtyella11 sites
- Pistoprion11 sites
- Conodonta10 sites
- Porifera10 sites
- Protarabellites7 sites
- Xanioprion7 sites
- Vistulella6 sites
- Lunoprionella5 sites
- Graptolithina3 sites
- Xanioprionidae indet.3 sites
- ? Leptoprion sp.2 sites
- Kalloprion2 sites
- Rakvereprion sp.2 sites
- Ananaspis fecunda1 site
- Graptolitha indet.1 site
- Interproetus intermedius1 site
- Interproetus intermedius ovalifrons1 site
- Pistroprion sp.1 site
- Prototarabellites cf. rectangularis1 site
- Pteropelta1 site
The Paleobiology Database records 17 sites for Placognatha indet., 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
2 references- A jawed polychaete fauna from the Late Ludlow Kozlowskii event interval in the Prague Basin (Czech Republic)16
- Late Ordovician jaw-bearing polychaetes from Anticosti Island, eastern Canada, and their biogeographic significance1
Each of the 17 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 content0
No picture of Placognatha indet. was found. Wikidata and Smithsonian Open Access were searched and had none.
iDigBio and GBIF were not searched: the Paleobiology Database does not place Placognatha indet. firmly enough to tell it from something else bearing the same name, and a search on the name alone returns whichever of them was photographed.
Wikipedia did not answer, so this is what the others held rather than everything there is.
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 itFormations of the SilurianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0.