Ankylodon annectens

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
- AnkylodonPBDB
- Diet
- insectivorePBDB, for Macroscelidea
- Life habit
- ground dwellingPBDB, for Macroscelidea
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At least 2.3 million years on record.
The record covers at least 31.8 Mya to 29.5 Mya. No occurrence read is dated outside 33.9 Mya to 24.7 Mya.
4 occurrences of Ankylodon annectens 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
4 occurrences- Oligocene100%
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
- Brule Formation · White River Group2
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The named rock units Ankylodon annectens has been recovered from, largest first. Drawn where the rock is now, not where it formed. 2 occurrences have no formation on record, which is common for older literature.
Ankylodon annectens and its relatives
OligoceneWhere Ankylodon annectens and its relatives were recorded in the Oligocene.
Found in the same rock
114 taxa- Herpetotherium fugax4 sites
- Altasciurus relictus3 sites
- Cedromus wardi3 sites
- Centetodon magnus3 sites
- Centetodon marginalis3 sites
- Domnina gradata3 sites
- Eumys elegans3 sites
- Hypisodus minimus3 sites
- Leptictidae3 sites
- Leptomeryx evansi3 sites
- Palaeolagus intermedius3 sites
- Paradjidaumo trilophus3 sites
- Scottimus ambiguus3 sites
- Archaeotherium mortoni2 sites
- Ecclesimus tenuiceps2 sites
- Heliscomys vetus2 sites
- Hesperocyon gregarius2 sites
- Hypertragulus calcaratus2 sites
- Ischyromys typus2 sites
- Leptochoerus2 sites
- Leptomeryx esulcatus2 sites
- Megalagus turgidus2 sites
- Merycoidodontidae2 sites
- Metadjidaumo hendryi2 sites
The Paleobiology Database records 4 sites for Ankylodon annectens, 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- Biostratigraphy and biochronology of early Arikareean through late Hemingfordian small mammal faunas from the Nebraska Panhandle and adjacent areas1
- Synonymies and reidentifications of North American fossil mammals1
- Paleontology and geology of the Badwater Creek area, central Wyoming. Part 16. The Cedar Ridge local fauna (late Oligocene)1
- A contribution to the Tertiary geology and paleontology of northeastern Colorado1
Each of the 4 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 Ankylodon annectens
- 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 Ankylodon annectens 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.
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itAnkylodon through timeFormations of the OligoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Patterson and McGrew 1937