Neonematherium
Neonematherium is an extinct genus of scelidotheriid ground sloths that lived in Argentina, Chile, and Colombia during the Early to Late Miocene. Fossils have been found in the Honda Group of Colombia, and the Río Frías Formation of Chile.

via iDigBio · via iDigBio. 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
- ScelidotheriinaePBDB
- Diet
- herbivorePBDB, for Mylodontidae
- Life habit
- ground dwellingPBDB, for Mylodontidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 1.7 million years on record.
The record covers at least 15.5 Mya to 13.8 Mya. No occurrence read is dated outside 16.3 Mya to 11 Mya.
21 occurrences of Neonematherium 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
21 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
- La Victoria Formation · Honda Group15
- Villavieja Formation · Honda Group4
- Río Frías Formation1
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The named rock units Neonematherium has been recovered from, largest first. Drawn where the rock is now, not where it formed. 1 occurrence has no formation on record, which is common for older literature.
Neonematherium and its relatives
MioceneWhere Neonematherium and its relatives were recorded in the Miocene.
Found in the same rock
47 taxa- Dracaena colombiana6 sites
- Hapalops4 sites
- Magdalenabradys confusum4 sites
- Glossotheriopsis pascuali3 sites
- Granastrapotherium snorki3 sites
- Megalonychidae3 sites
- Pedrolypeutes praecursor3 sites
- Hondadelphidae2 sites
- Sylviocarcinus piriformis2 sites
- Villarroelia totoyoi2 sites
- Adianthus godoyi1 site
- Adinotherium1 site
- Alloiomys friasensis1 site
- Aniliidae1 site
- Astrapotherium1 site
- Boreostemma gigantea1 site
- Borhyaenidae1 site
- Eutypotherium1 site
- Galbula hylochoreutes1 site
- Gryposuchus colombianus1 site
- Homalodotherium1 site
- Hondadelphys fieldsi1 site
- Huilatherium pluripicatum1 site
- Lycopsis longirostrus1 site
The Paleobiology Database records 18 sites for Neonematherium, 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
3 references- Xenarthrans: Pilosans17
- Ground sloths from the Friasian La Venta fauna, with additions to the pre-Frasian Coyaima fauna of Colombia, South America3
- Fossil Marsupialia from the type Friasian Land Mammal Age (Miocene), Alto Rio Cisnes, Aisen, Chile1
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. Each entry links to the Paleobiology Database's own record for the work.
Media and terms
Media content1

Picture of Neonematherium
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Neonematherium 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
- 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 itScelidotheriinae through timeFormations of the MioceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Ameghino 1904