Morganucodonts are the oldest and longest-lived group of mammals. They died out after the Cretaceous, perhaps out-competed by true rodents. While superficially shrew-like, they are believed to be the only mammal group with no close living descendents.

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(Click on Photo to Enlarge)
Name: Morganucodont
Geologic Age: Late Triassic
Stratigraphic detail: Pant Quarry
Location: Cardiff, Wales
Comments: TINY tooth from the OLDEST KNOWN mammal! Each tooth measures approx. +/- 1 mm in size. VERY RARE!!!Morganucodont Tooth 4 $85.00
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(Click on Photo to Enlarge)
Name: Morganucodont
Geologic Age: Late Triassic
Stratigraphic detail: Pant Quarry
Location: Cardiff, Wales
Comments: TINY tooth from the OLDEST KNOWN mammal! Each tooth measures approx. +/- 1 mm in size. VERY RARE!!!Morganucodont Tooth 6 $85.00
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(Click on Photo to Enlarge)
Name: Morganucodont
Geologic Age: Late Triassic
Stratigraphic detail: Pant Quarry
Location: Cardiff, Wales
Comments: TINY tooth from the OLDEST KNOWN mammal! Each tooth measures approx. +/- 1 mm in size. VERY RARE!!!Morganucodont Tooth 7 $85.00
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|
(Click on Photo to Enlarge)
Name: Morganucodont
Geologic Age: Late Triassic
Stratigraphic detail: Pant Quarry
Location: Cardiff, Wales
Comments: TINY tooth from the OLDEST KNOWN mammal! Each tooth measures approx. +/- 1 mm in size. VERY RARE!!!Morganucodont Tooth 8 $85.00
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![]() |
(Click on Photo to Enlarge)
Name: Morganucodont
Geologic Age: Late Triassic
Stratigraphic detail: Pant Quarry
Location: Cardiff, Wales
Comments: TINY tooth from the OLDEST KNOWN mammal! Each tooth measures approx. +/- 1 mm in size. This particular tooth is shaped like an ice cream scoop.. and appears to be FULLY ROOTED!! EXTREMELY RARE!!!Morganucodont Tooth 10 $150.00