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(Click Photo to Enlarge)
Name:
Razanandrongobe sakalavae (giant archosaur)
Geologic Age: Mid Jurassic
Stratigraphic detail: Unknown Formation
Location: Madagscar
Comments: This tooth is from
a BIG therapod! It has the shape and girth of a t-rex tooth... it
measures approx. 1 13/16" long. The serrations are on both sides
of the tooth..
Ultra rare tooth from the super
predator 'Razanandrongobe sakalavae' found Ambondromamy, NW Madagascar.
The tooth is very similar to a Tyrannosaur tooth but the denticles on this
tooth are more pronounced, tooth is Mid Jurassic age. This new predator
was described by Maganuco S., Dal Sasso C., and Pasini G., 2006 - the
published paper describes the holotype material comes from the Isalo IIIb
subunit of the Mahajunga basin. Here is an abstract from that paper:
Abstract Here we report on the finding of new vertebrate remains
from the
Middle Jurassic (Bathonian) of the Mahajanga basin, NW Madagascar, that
represent one of the largest predatory archosaurs from Gondwana. The remains
consist of a fragmentary right maxilla bearing three teeth and seven isolated
teeth that clearly belong to a single taxon. Although the scarcity of the
remains rendersestablishment of affinities difficult, the presence of a unique
combination of features including a well developed medial shelf of the
maxilla, rostral and lateral teeth respectively U-shaped and sub-oval in
cross-section, and very large tooth denticles (1 per mm), allows us to erect a
new taxon, Razanandrongobe sakalavae. Additionally, the structure of the
teeth, the peculiar wear of their enamel, and the morphology of the maxilla
strongly suggest that Razanandrongobe sakalavae often crushed the bones of its
prey.
The paper goes on to say that' Razanandrongobe' is either a crocodylomorph or a theropod Although' Razanandrongobe sakalavae' differs in some aspects from any currently known member of the Crocodylomorpha and Theropoda, it belongs certainly to one of those taxons. The preserved maxillary fragment is 192 mm long, 124 mm high, and 96 mm wide, and the describers suggest that Razanandrongobe may have been of a similar size to either Sarcosuchus Imperator (if a crocodilian) or Daspletosaurus(if a theropod). Either way a huge super predator that would have terrorised Gondwana. 'Razanandrongobe' dentition show striking similarities to a Tyrannosaurus (but not enough to indicate a close phylogenetic relationship, just a similar mode of predatory behavior), these teeth clearly are the teeth of a bone crusher similar to T REX. 'Razanandrongobe' most likely fed on sauropods such as Lapparentosaurus and Archaeodontosaurus say the authors. Beyond rare and the only one available for sale worldwide ,only a jaw and some isolated teeth ever found,this is a lateral tooth lateral teeth from this beast is described as sub-oval in cross-section; smallest lateral teeth, globe-shaped; denticles present on both carinae in all the teeth, and very large (0.8- 1.4 per mm) (unambiguous autapomorphy of the taxon)."
Razanandrongobe Tooth 1 Price $1500.00