Polorthus tibialis
No picture of Polorthus tibialis was found. Wikipedia and Wikidata were searched and had none. iDigBio and GBIF were not searched: the Paleobiology Database does not place Polorthus tibialis 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. Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
Time the record covers
At least 2.4 million years on record.
The record covers at least 61.66 Mya to 59.24 Mya. No occurrence read is dated outside 66 Mya to 56 Mya.
8 occurrences of Polorthus tibialis on record, most of them in the Paleocene. 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- Paleocene100%
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
- Vincentown Formation · Pamunkey Group7
- Hornerstown Formation · Rancocas Group1
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The named rock units Polorthus tibialis has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Polorthus tibialis and its relatives
PaleoceneWhere Polorthus tibialis and its relatives were recorded in the Paleocene.
Found in the same rock
165 taxa- Flabellum mortoni5 sites
- Arca3 sites
- Cidaris splendens3 sites
- Coscinopleura3 sites
- Cucullaea3 sites
- Graphularia3 sites
- Gryphaea3 sites
- Lamna3 sites
- Rotularia3 sites
- Salenia tumidula3 sites
- Volutoderma3 sites
- Cardium2 sites
- Cavoscala annulata2 sites
- Cheilophis huerfanoensis2 sites
- Chondrichthyes2 sites
- Crocodylia2 sites
- Echinoidea2 sites
- Gryphaeostrea vomer2 sites
- Hemiaster2 sites
- Kummelia2 sites
- Nodosaria2 sites
- Panopea2 sites
- Pitar (Pitar) ovatus2 sites
- Pycnodonte2 sites
The Paleobiology Database records 5 sites for Polorthus tibialis, 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
4 references- Paleoecology of the Delaware Valley region. Part II: Cretaceous to Quartenary3
- Catalogue of the Paleocene and Eocene Mollusks of the Southern and Eastern United States Part II. Gastropoda3
- A large longirostrine crocodylian from the Paleocene Vincentown Formation in Burlington County, New Jersey and associated invertebrate fauna1
- Macrofossils from the Vincentown Formation (Paleocene) of New Jersey1
Each 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 the Paleobiology Database's own record for the work.
Media and terms
Media content0
No picture of Polorthus tibialis was found. Wikipedia and Wikidata were searched and had none.
iDigBio and GBIF were not searched: the Paleobiology Database does not place Polorthus tibialis 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.
Smithsonian Open Access did not answer, so this is what the others held rather than everything there is.
No 3D scan of Polorthus tibialis 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 itFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0.