Eggysodon
Eggysodon is an extinct genus of odd-toed ungulate belong to the rhinoceros-like family Eggysodontidae. It was a small, ground-dwelling browser, and fossils have been found in Oligocene deposits throughout Europe. Eggysodon may have been related to Preaceratherium, and both had tusklike canines and smaller, and fewer, incisors.

SeismicShrimp · CC BY 4.0 · 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
- EggysodontidaePBDB
- Diet
- browserPBDB, for Ceratomorpha
- Life habit
- ground dwellingPBDB, for Ceratomorpha
- Motility
- actively mobilePBDB, for Osteichthyes
- Environment
- terrestrialPBDB, for Eutheria
Time the record covers
At most 11 million years on record.
Every occurrence read is dated to somewhere between 33.9 Mya and 23.04 Mya, and nothing in the dating separates them, so that window is what the record shows rather than a span.
13 occurrences of Eggysodon 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
13 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
3 formations
- Borgloon Formation · Tongeren Group2
- Aral Formation1
- Bohlen Formation1
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The named rock units Eggysodon has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.
Eggysodon and its relatives
OligoceneWhere Eggysodon and its relatives were recorded in the Oligocene.
Found in the same rock
184 taxa- Ronzotherium4 sites
- Entelodon3 sites
- Steneofiber3 sites
- Tapirulus hyracinus3 sites
- Triturus3 sites
- Amphiperatherium minutum2 sites
- Amphitragulus2 sites
- Anguini2 sites
- Anthracotherium2 sites
- Cadurcotherium cayluxi2 sites
- Cheirogaster2 sites
- Dichobune fraasi2 sites
- Dinailurictis bonali2 sites
- Diplocynodon2 sites
- Eopelobates bayeri2 sites
- Glamys priscus2 sites
- Lophiomeryx chalaniati2 sites
- Metriotherium mirabile2 sites
- Nimravus intermedius2 sites
- Oligodyromys planus2 sites
- Ophisaurus2 sites
- Paenanthracotherium bergeri2 sites
- Paenanthracotherium hippoideum2 sites
- Palaeobatrachus grandipes2 sites
The Paleobiology Database records 12 sites for Eggysodon, 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- Les vertébrés terrestres de l’Oligocène inférieur de Belgique (Formation de Borgloon, MP 21): inventaire et interprétation des données actuelles2
- Le Garouillas et les sites contemporains (Oligocène, MP 25) des phosphorites du Quercy (Lot, Tarn-et-Garonne, France) et leurs faunes de vertébrés. 10. Perissodactyla: Allaceropinae et Rhinocerotidae2
- New insights into the Oligocene Rhinocerotoidea (Mammalia, Perissodactyla) from Northwestern Italy1
- A new late Early Oligocene vertebrate fauna from Moissac, South-West France1
- Tapiridae (Perissodactyla, Mammalia) of the Swiss Molasse Basin during the Oligocene–Miocene transition1
- Earliest record of rhinocerotoids (Mammalia: Perissodactyla) from Switzerland: systematics and biostratigraphy1
- Diaceratherium massiliae nov. sp. des argiles oligocènes de Saint-André et Saint-Henri à Marseille et de Les Milles près d’Aix-en-Provence (SE de la France), premier grand Rhinocerotidae brachypode européen1
- Apterodon intermedius, sp. nov., a new European Creodont Mammal from MP22 of Espenhain (Germany)1
- Oligocene stratigraphy, sequence stratigraphy, and mammalian biochronology north of the Aral Sea, Western Kazakstan1
- Rhinolophoidea (Chiroptera, Mammalia) from the upper Oligocene of Carrascosa del Campo (Central Spain)1
- Nouveaux matériels de reptiles du Tertiaire d'Allemagne; 4, Nouveaux matériels des Tortues (Ptychogaster/Ergilemys) de la localité Oligocène moyen de Ronheim (Sud de l'Allemagne). [New finds of Tertiary Reptilia in West Germany; New turtles (Ptychogaster/Ergilemys) of the middle Oligocene in Ronheim, southern Germany.]1
Each of the 13 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 Eggysodon
- Source
- Wikipedia/Commons
- Credit
- SeismicShrimp
- Licence
- CC BY 4.0
- Commercial use
- the licence allows it
No 3D scan of Eggysodon 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.
The description on this site
- Source
- Wikipedia, “Eggysodon”
- 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 itEggysodontidae through timeFormations of the OligoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Roman 1910