Sphenocoelus
Sphenocoelus is an extinct genus of brontothere known from North America during the Middle Eocene.

Othenio Abel · Public Domain · via Wikipedia/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
- DolichorhininiPBDB
- Diet
- browserPBDB, for Brontotheriidae
- Life habit
- ground dwellingPBDB, for Brontotheriidae
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At most 6.2 million years on record.
Every occurrence read is dated to somewhere between 45.9 Mya and 39.7 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
12 occurrences of Sphenocoelus on record, most of them in the Eocene. 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
12 occurrences- Eocene100%
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
2 formations
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The named rock units Sphenocoelus has been recovered from, largest first. Drawn where the rock is now, not where it formed.
Sphenocoelus and its relatives
EoceneWhere Sphenocoelus and its relatives were recorded in the Eocene.
Found in the same rock
124 taxa- Eobasileus cornutus5 sites
- Metarhinus5 sites
- Triplopus implicatus5 sites
- Amynodon advenus3 sites
- Eomoropus amarorum3 sites
- Hyrachyus eximius3 sites
- Achaenodon insolens2 sites
- Achaenodon uintense2 sites
- Epihippus gracilis2 sites
- Harpagolestes uintensis2 sites
- Isectolophus annectens2 sites
- Limnocyon potens2 sites
- Mesonyx obtusidens2 sites
- Metarhinus diploconus2 sites
- Metarhinus fluviatilis2 sites
- Notharctus robustior2 sites
- Protoptychus hatcheri2 sites
- Protoreodon parvus2 sites
- Protylopus petersoni2 sites
- Rhinocerotoidea2 sites
- Triplopus obliquidens2 sites
- Uintatherium2 sites
- Achaenodon1 site
- Achaenodon robustus1 site
The Paleobiology Database records 7 sites for Sphenocoelus, 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
7 references- Species taxonomy, phylogeny, and biogeography of the Brontotheriidae (Mammalia: Perissodactyla)3
- The Eocene Vertebrates of the Uinta Basin, Utah3
- New or Little Known Titanotheres From the Lower Uintah Formations with Notes on the Stratigraphy and Distribution of Fossils2
- Synonymies and reidentifications of North American fossil mammals1
- Magnetic stratigraphy and biostratigraphy of the middle Eocene Uinta Formation, Uinta Basin, Utah1
- New Eurasiatic and American proboscideans1
- Osteology of Dolichorhinus longiceps Douglass, with a Review of the Species of Dolichorhinus in the Order of their Publication1
Each of the 12 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 Sphenocoelus
- Source
- Wikipedia/Commons
- Credit
- Othenio Abel
- Licence
- Public Domain
- Commercial use
- the licence allows it
No 3D scan of Sphenocoelus 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 itDolichorhinini through timeFormations of the EoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Osborn 1895