Adianthidae
Adianthidae is an extinct family of litopterns that existed from the Middle Eocene (Mustersan) to the Early Miocene (Santacrucian).

Ghedo · CC BY-SA 4.0 · 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
- LitopternaPBDB
- Diet
- herbivorePBDB, for Litopterna
- Life habit
- scansorialPBDB, for Eutheria
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 39 million years on record.
The record covers at least 56 Mya to 16.3 Mya. No occurrence read is dated outside 59.24 Mya to 15.5 Mya.
21 occurrences of Adianthidae on record, most of them in the Oligocene. 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
21 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
10 formations
- Sarmiento Formation8
- Salla Formation2
- Lumbrera Formation · Salta Group1
- Abanico Formation1
- Divisadero Largo Formation1
- Santa Cruz Formation1
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The named rock units Adianthidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 3 occurrences have no formation on record, which is common for older literature.
Adianthidae and its relatives
OligoceneWhere Adianthidae and its relatives were recorded in the Oligocene.
Found in the same rock
319 taxa- Caviomorpha3 sites
- Pyrotherium3 sites
- Ancylocoelus frequens2 sites
- Archaeohyrax patagonicus2 sites
- Argyrohyrax proavus2 sites
- Argyrolagoidea2 sites
- Astrapotheriidae2 sites
- Borhyaenidae2 sites
- Cephalomyidae2 sites
- Dasypodidae2 sites
- Eoviscaccia australis2 sites
- Incamys bolivianus2 sites
- Leontinia gaudryi2 sites
- Marsupialia2 sites
- Notogale mitis2 sites
- Palaeothentinae2 sites
- Pharsophorus lacerans2 sites
- Pseudhyrax eutrachytheroides2 sites
- Pyrotheria2 sites
- Testudines2 sites
- Trachytherus spegazzinianus2 sites
- Tricoelodus bicuspidatus2 sites
- Typotheria2 sites
- Acamana1 site
The Paleobiology Database records 12 sites for Adianthidae, 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
11 references- Systematics of the Adianthidae (Litopterna, Mammalia)9
- Magnetic polarity stratigraphy and Mammalian fauna of the Deseadan (late Oligocene-early Miocene) Salla Beds of Northern Bolivia2
- Mammiféres crétacés de l’Argentine (Deuxième contribution à la connaissance de la fauna mammalogique de couches à Pyrotherium) [Cretaceous mammals of Argentina (second contribution to the knowledge of the mammalian fauna of the Pyrotherium Beds)]2
- First record of Indalecia (Mammalia, Litopterna?, Indaleciidae) in the Río loro Formation (early Paleogene, Tucumán Province, Argentina)1
- Eocene mammals from volcaniclastic deposits of the Somun Cura Plateau: biostratigraphic implications for north Patagonia Paleogene1
- Biotic community and landscape changes around the Eocene–Oligocene transition at Shapaja, Peruvian Amazonia: Regional or global drivers?1
- South America's earliest rodent and recognition of a new interval of mammalian evolution1
- A new Adianthid Litoptern (Mammalia) from the Miocene of Chile1
- Indalecia grandensis gen. et sp. nov. del Eoceno temprano del noroeste Argentino, tipo de una nueva subfamilia de los Adianthidae (Mammalia, Litopterna)1
- The mammalian fauna of the Divisadero Largo Formation, Mendoza, Argentina1
- Loomis, 19141
Each of the 21 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 content1

Picture of Adianthidae
- Source
- Wikidata/Commons
- Credit
- Ghedo
- Licence
- CC BY-SA 4.0
- Commercial use
- the licence allows it
No 3D scan of Adianthidae 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.
The description on this site
- Source
- Wikipedia, “Adianthidae”
- 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 itLitopterna through timeFormations of the OligoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. (Ameghino 1891)