Poraspis polaris
No picture of Poraspis polaris was found. Wikipedia, Wikidata and iDigBio were searched and had none. 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 Poraspis polaris, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- PoraspisPBDB
- Motility
- actively mobilePBDB, for Chordata
Time the record covers
At most 28 million years on record.
Every occurrence read is dated to somewhere between 426.7 Mya and 399.5 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
9 occurrences of Poraspis polaris on record, most of them in the Devonian. 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
9 occurrencesThese 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
- Delorme Formation4
- Peel Sound Formation2
- Pod''emnaya Formation1
- Fraenkelryggen Formation1
- Psammosteus Limestone Formation1
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The named rock units Poraspis polaris has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Poraspis polaris and its relatives
DevonianWhere Poraspis polaris and its relatives were recorded in the Devonian.
Found in the same rock
87 taxa- Heterostraci4 sites
- Pionaspis amplissima4 sites
- Cephalaspis3 sites
- Corvaspis3 sites
- Traquairaspis3 sites
- Turinia pagei3 sites
- Acanthodii2 sites
- Alainaspis platyrhina2 sites
- Boreania minima2 sites
- Cyathaspididae2 sites
- Lepidaspis serrata2 sites
- Nikolivia elongata2 sites
- Pteraspididae2 sites
- Torpedaspis elongata2 sites
- Amphiaspidiformes1 site
- Anglaspis1 site
- Anglaspis heintzi1 site
- Apalolepis toombsi1 site
- Archegonaspis1 site
- Arcticacanthus bicostatus1 site
- Ariaspis1 site
- Aserotaspis canadensis1 site
- Asketaspis interstincta1 site
- Boothiaspis alata1 site
The Paleobiology Database records 9 sites for Poraspis polaris, 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
5 references- Ostracoderm faunas of the Delorne and associated Siluri-Devonian Formations, North Western Territories, Canada4
- A New Heterostracan from the Upper Silurian of Northwest Territories, Canada2
- Upper Silurian and Devonian heterostracan pteraspidomorphs (Vertebrata) from Severnaya Zemlya (Russia): a preliminary report with biogeographical and biostratigraphical implications1
- Chapter 4. Early Devonian fossil fishes sites of the Welsh Borders1
- The cyathaspids of the Red Bay Group (Lower Devonian) of Spitsbergen1
Each of the 9 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 Poraspis polaris was found. Wikipedia, Wikidata and iDigBio were searched and had none.
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 Poraspis polaris, or no answer at all. This entry cannot say which.
No 3D scan of Poraspis polaris 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 itPoraspis through timeFormations of the DevonianThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Kiaer 1932