Didolodus

Didolodus is an extinct genus of mammals from Middle Eocene Argentina. It is an ungulate mammal of uncertain affinities, possibly related to Litopterna, though this is uncertain due to the lack of reliable post-cranial remains, and for now remains Meridiungulata incertae sedis.[1] Its remains were found in the Sarmiento Formation of Patagonia.[2]

Didolodus
Temporal range: Mid Eocene (Divisaderan)
~
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Family: †Didolodontidae
Genus: †Didolodus
Ameghino 1897
Species
  • D. latigonus
  • D. magnus
  • D. minor
  • D. multicuspis (type)
Synonyms
  • Cephanodus Ameghino 1902
  • Lonchoconus Ameghino 1901
  • Nephacodus Ameghino 1902

Didolodus probably was a quick-footed creature which probably lived like early ungulates such as Propalaeotherium, based on its highly similar teeth. It was around 60 centimetres (2.0 ft) in length, with short limbs and a long tail.[3]

Phylogeny

Cladogram after Gelfo and Sigé, 2011:[4]

 
 

Protungulatum

 
 
 

Phenacodus

 
Kollpaniinae
 

Simoclaenus

 
 
 

Molinodus

 
 
 

Tiuclaenus

 
 
 

Andinodus

 
 

Pucanodus

 
 
 
 
 
Didolodontidae
 

Paulacoutoia protocenica

 
 

Lamegoia conodonta

 
 

Paulogervaisia inusta

 
Didolodus
 

Didolodus magnus

 
 

Didolodus multicuspis

 
 

Didolodus minor

 
 
Ernestokokenia
 

Ernestokokenia nitida

 
 

Ernestokokenia chaishoer

 
 

Ernestokokenia yirunhor

 
 
 
 

Escribania chubutensis

 
 
 

Escribania talonicuspis

 
 
 

Raulvaccia peligrensis

 
 

Umayodus raimondi

 
 
 
 
 
 
 

References

  1. Javier Nicolás, The alleged astragalar remains of Didolodus Ameghino, 1897 (Mammalia, Panameriungulata) and a critic of isolated bone association models, 2012
  2. Didolodus at Fossilworks.org
  3. Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 246. ISBN 1-84028-152-9.
  4. Javier N. Gelfo and Bernard Sigé (2011). "A new didolodontid mammal from the late Paleocene–earliest Eocene of Laguna Umayo, Peru" (PDF). Acta Palaeontologica Polonica. 56 (4): 665–678. doi:10.4202/app.2010.0067.


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