(in honour of ‘Alick Walker’).
Named By: Sankar Chatterjee & Ben Creisler. - 1994 (Originally named Walkeria by Chatterjee in 1986).
Synonyms: Walkeria maleriensis (refer to text for detail).
Classification: Chordata, Reptilia, Dinosauria, Saurischia, Theropoda?
Species: A. maleriensis (type).
Known locations: India, Andhra Pradesh - Maleri Formation.
Time period: Carnian to Norian of the Triassic.
Fossil representation: Fragmentary remains including partial skull, mandible, femur, astragalus (ankle bone), and 28 assorted vertebrae.
was originally named in 1986 as Walkeria,
however the genus name
Walkeria was later found to be as preoccupied as it had already been
used to name a bryozoan (a kind of tiny aquatic invertebrate).
This necessited a revision to the name since naming priority is always
given to the first creature to be named, hence the alteration to
Alwalkeria in 1994.
Due to the fragmentary and incompleteness of the Alwalkeria holotype, not a lot is known for certain about this dinosaur. Alwalkeria does seem to be a saurischian (lizard hipped) dinosaur and possibly a primitive theropod, but there are not enough known features to be certain of this. The teeth in the known portions of the mouth are unserrated and are also heterodont, in that they vary from one another. This makes it hard to currently ascertain if Alwalkeria was a meat eater or a plant eater, possibly even being both. There is a gap between the teeth of the maxilla and pre-maxilla though, a feature similar to another dinosaur genus called Eoraptor.
- A new theropod dinosaur from India with remarks on the Gondwana-Laurasia connection in the Late Cretaceous, Sankar Chatterje - 1987.
- Alwalkeria (Theropoda) and Morturneria (Plesiosauria), new names for preoccupied Walkeria Chatterjee, 1987 and Turneria Chatterjee and Small, 1989, Sankar Chatterjee & Ben Creisler - 1994.