Neotherium mirum
Neotherium mirum is an extinct species of basal walrus. It was smaller than living forms and it did not have long tusks. Males were larger than females.
No picture of Neotherium mirum 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 Neotherium mirum, or no answer at all. This entry cannot say which.
On record
Recorded, not inferred- Sits inside
- NeotheriumPBDB
- Diet
- insectivorePBDB, for Odobenidae
- Life habit
- amphibiousPBDB, for Pinnipedia
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- marinePBDB, for Pinnipedia
Time the record covers
At least 2.1 million years on record.
The record covers at least 15.98 Mya to 13.82 Mya. No occurrence read is dated outside 20.45 Mya to 11.63 Mya.
5 occurrences of Neotherium mirum on record, most of them in the Miocene. 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
5 occurrences- Miocene100%
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
3 formations
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The named rock units Neotherium mirum has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Neotherium mirum and its relatives
MioceneWhere Neotherium mirum and its relatives were recorded in the Miocene.
Found in the same rock
58 taxa- Allodesmus kernensis2 sites
- Hypohippus2 sites
- Otodus megalodon2 sites
- Allodesmus sinanoensis1 site
- Anatidae1 site
- Bouromeryx americanus1 site
- Branta1 site
- Carcharhinus1 site
- Carcharias clavatus1 site
- Carcharodon carcharias1 site
- Carcharodon hastalis1 site
- Cephaloscyllium1 site
- Cetorhinus1 site
- Ciconiidae1 site
- Cosmopolitodus planus1 site
- Dasyatis1 site
- Dermochelyidae1 site
- Diomedea milleri1 site
- Echinorhinus blakei1 site
- Fulmarus miocaenus1 site
- Galeocerdo aduncus1 site
- Galeorhinus1 site
- Hemipristis serra1 site
- Heterodontus1 site
The Paleobiology Database records 4 sites for Neotherium mirum, 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- New data on the early odobenid Neotherium mirum Kellogg, 1931, and other pinniped remains from the Sharktooth Hill Bonebed, California2
- Middle and late Miocene marine mammal assemblages from the Monterey Formation of Orange County, California1
- First report of Neotherium mandible from the Miocene Shimane, Japan: Review of basal odobenids in the western North Pacific1
- Pelagic mammals of the Temblor Formation of the Kern River region, California1
Each of the 5 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 Neotherium mirum 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 Neotherium mirum, or no answer at all. This entry cannot say which.
No 3D scan of Neotherium mirum 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.
The description on this site
- Source
- Wikipedia, “Neotherium”
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itNeotherium through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Kellogg 1931