Paleoparadoxiidae

Uncredited · via Wikidata/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- DesmostyloideaPBDB
- Diet
- herbivorePBDB, for Desmostylia
- Life habit
- amphibiousPBDB, for Desmostylia
- Motility
- actively mobilePBDB, for Desmostylia
- Environment
- coastalPBDB, for Desmostylia
Time the record covers
At least 11 million years on record.
The record covers at least 23.04 Mya to 11.63 Mya. No occurrence read is dated outside 27.3 Mya to 5.333 Mya.
62 occurrences of Paleoparadoxiidae 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
62 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
38 formations
- Monterey Formation4
- Santa Margarita Formation3
- Tonokita Formation3
- Iwando Formation · Tokigawa Group3
- Nagura Formation · Chichibumachi Group3
- Ladera Formation2
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The named rock units Paleoparadoxiidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 14 further formations hold fewer occurrences each and are not listed. 7 occurrences have no formation on record, which is common for older literature.
Paleoparadoxiidae and its relatives
MioceneWhere Paleoparadoxiidae and its relatives were recorded in the Miocene.
Found in the same rock
272 taxa- Paleoparadoxia28 sites
- Paleoparadoxia tabatai22 sites
- Desmostylus8 sites
- Carcharodon hastalis7 sites
- Otodus megalodon7 sites
- Allodesmus6 sites
- Cosmopolitodus planus6 sites
- Carcharhinus5 sites
- Desmostylus hesperus5 sites
- Cetotheriidae4 sites
- Galeocerdo aduncus4 sites
- Isurus desori4 sites
- Odobenidae4 sites
- Galeocerdo3 sites
- Hemipristis serra3 sites
- Isurus3 sites
- Liolithax kernensis3 sites
- Myliobatis3 sites
- Mysticeti3 sites
- Neotherium3 sites
- Parietobalaena3 sites
- Teleostei3 sites
- Araloselachus vorax2 sites
- Aves2 sites
The Paleobiology Database records 54 sites for Paleoparadoxiidae, 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
38 references- Desmostylia8
- Postcranial skeletons of Japanese Desmostylia6
- The Oldest Record of Paleoparadoxia from the Northwest Pacific with an Implication on the Early Evolution of Paleoparadoxiinae (Mammalia: Desmostylia)5
- Desmostylian tooth remains from the Miocene Tokigawa Group at Kuzubukuro, Saitama, Japan3
- New evidence for the co-occurrence of two genera of Paleoparadoxiidae (Mammalia, Desmostylia) from the Middle Miocene of Japan: insights into taxonomic status and paleodiversity in Desmostylia2
- On occurrence of Desmostylian fossils from the Upper part of the Niwaya Formation, Tomioka Group (Middle Miocene), Yoshii town, Gunma Prefecture, Japan2
- The sequence of fossil marine mammal assemblages in Mexico2
- On sexual dimorphism in Paleoparadoxia tabatai2
- Late Cenozoic elasmobranchs from the Hokuriku district, central Japan2
- Some fossils of Paleoparadoxia from Miocene calcareous sandstones on the Noto Peninsula, central Japan2
- A long-forgotten ‘dinosaur’ bone from a museum cabinet, uncovered to be a Japan’s iconic extinct mammal, Paleoparadoxia (Desmostylia, Mammalia)1
- Histological observation of Paleoparadoxia incisor from the Noto Peninsula, Japan1
Each of the 62 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. 26 further references are not listed. 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 content1

Picture of Paleoparadoxiidae
- Source
- Wikidata/Commons
- Credit
- nobody named on the record
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Paleoparadoxiidae 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 itDesmostyloidea through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Reinhart 1959