Mammalia - Notoungulata - Hegetotheriidae
Alternative combination: Pachyrucos impressus
Synonyms: Pachyrucos diminutus Ameghino 1888, Tremacyllus chapalmalensis Ameghino 1908, Tremacyllus diminutus Ameghino 1888, Tremacyllus intermedius Rovereto 1914, Tremacyllus novus Ameghino 1908
Belongs to Tremacyllus according to E. Cerdeno and M. Bond 1998
See also Ameghino 1891, Rovereto 1914 and Vera and Ercoli 2018
Sister taxa: Tremacyllus incipiens, Tremacyllus subdiminutus
Type specimens:
- Tremacyllus impressus: MACN A 1377, a partial skull (cranial fragment with both cheek tooth series)
- Tremacyllus chapalmalensis:
- Tremacyllus diminutus:
- Tremacyllus intermedius: MACN 2434, a skull (Nearly complete skull associated with mandible and some postcranial remains).
- Tremacyllus novus:
Distribution:
• Quaternary of Argentina (1 collection)
• Pliocene of Argentina (11)
• Huayquerian of Argentina (13)
• Miocene to Pliocene of Argentina (1)
• Miocene of Argentina (3)
Total: 29 collections each including a single occurrence
Specimen images are retrieved through the ePANDDA API.
Click image to enlarge. Click to access iDigBio record.