Amphipternis
No picture of Amphipternis was found. Wikidata, iDigBio and Smithsonian Open Access were searched and had none. Wikipedia 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 Amphipternis, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- AmphipyndacidaePBDB
Time the record covers
At least 4.3 million years on record.
The record covers at least 66 Mya to 61.66 Mya. No occurrence read is dated outside 72.2 Mya to 59.24 Mya.
43 occurrences of Amphipternis on record, most of them in the Paleocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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
43 occurrences- Late Cretaceous23%
- Paleocene77%
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
1 formation
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The named rock units Amphipternis has been recovered from, largest first. Drawn where the rock is now, not where it formed. 25 occurrences have no formation on record, which is common for older literature.
Amphipternis and its relatives
PaleoceneWhere Amphipternis and its relatives were recorded in the Paleocene.
Found in the same rock
80 taxa- Actinomminae41 sites
- Dictyomitra andersoni41 sites
- Lithomespilus41 sites
- Amphipyndax stocki40 sites
- Stichomitra carnegiense40 sites
- Myllocercion38 sites
- Amphisphaera37 sites
- Theocampe37 sites
- Eucyrtidiidae35 sites
- Lithelius35 sites
- Mita35 sites
- Dictyomitra multicostata33 sites
- Spongotrochus33 sites
- Stichomitra32 sites
- Theocapsomma32 sites
- Cornutella californica30 sites
- Spongodiscus30 sites
- Tholodiscus ocellatus30 sites
- Lithomelissa29 sites
- Siphocampe29 sites
- Archaeodictyomitra27 sites
- Protoxiphotractus27 sites
- Spongodiscidae27 sites
- Cyrtocapsa26 sites
The Paleobiology Database records 41 sites for Amphipternis, 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
1 referenceEach of the 43 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 Amphipternis was found. Wikidata, iDigBio and Smithsonian Open Access were searched and had none.
Wikipedia 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 Amphipternis, or no answer at all. This entry cannot say which.
No 3D scan of Amphipternis was found in Smithsonian Open Access and Sketchfab.
MorphoSource 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 itAmphipyndacidae through timeFormations of the PaleoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Foreman 1973