10.5061/DRYAD.RM8BK77
Herne, Matthew C.
University of New England
Nair, Jay P.
University of Queensland
Evans, Alistair R.
Monash University
Tait, Alan M.
Monash University
Data from: New small-bodied ornithopods (Dinosauria, Neornithischia) from
the Early Cretaceous Wonthaggi Formation (Strzelecki Group) of the
Australian-Antarctic rift system, with revision of Qantassaurus intrepidus
Rich and Vickers-Rich, 1999
Dryad
dataset
2019
Albian
Maxilla
Barremian
Dinosauria
Aptian
Galleonosaurus dorisae
Ornithopoda
2018-10-16T17:51:42Z
2018-10-16T17:51:42Z
en
https://doi.org/10.1017/jpa.2018.95
732106350 bytes
2
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The Flat Rocks locality in the Wonthaggi Formation (Strzelecki Group) of
the Gippsland Basin, southeastern Australia, hosts fossils of a late
Barremian vertebrate fauna that inhabited the ancient rift between
Australia and Antarctica. Known from its dentary, Qantassaurus intrepidus
Rich and Vickers-Rich, 1999 has been the only dinosaur named from this
locality. However, the plethora of vertebrate fossils collected from Flat
Rocks suggests that further dinosaurs await discovery. From this locality,
we name a new small-bodied ornithopod, Galleonosaurus dorisae n. gen. n.
sp. from craniodental remains. Five ornithopodan genera are now named from
Victoria. Galleonosaurus dorisae n. gen. n. sp. is known from five
maxillae, from which the first description of jaw growth in an Australian
dinosaur is provided. The holotype of Galleonosaurus dorisae n. gen. n.
sp. is the most complete dinosaur maxilla known from Victoria. Micro-CT
imagery of the holotype reveals the complex internal anatomy of the
neurovascular tract and antorbital fossa. We confirm that Q. intrepidus is
uniquely characterized by a deep foreshortened dentary. Two dentaries
originally referred to Q. intrepidus are reassigned to Q. ?intrepidus and
a further maxilla is referred to cf. Atlascopcosaurus loadsi Rich and
Rich, 1989. A further ornithopod dentary morphotype is identified, more
elongate than those of Q. intrepidus and Q. ?intrepidus and with three
more tooth positions. This dentary might pertain to Galleonosaurus dorisae
n. gen. n. sp. Phylogenetic analysis recovered Cretaceous Victorian and
Argentinian nonstyracosternan ornithopods within the exclusively Gondwanan
clade Elasmaria. However, the large-bodied taxon Muttaburrasaurus langdoni
Bartholomai and Molnar, 1981 is hypothesised as a basal iguanodontian with
closer affinities to dryomorphans than to rhabdodontids.
NMVP229196-tiffs-6-199MicroCT tiff series, holotypic maxilla (NMV P229196)
of Galleonosaurus dorisae (part 1); Zeiss Xradia XRM Versa520 X-Ray
Microtomography: voxel size 45.61 µm; power 10 W; voltage 140 kVNMV
P229196-tiffs-202-499MicroCT tiff series, holotypic maxilla (NMV P229196)
of Galleonosaurus dorisae (Part 2); Zeiss Xradia XRM Versa520 X-Ray
Microtomography: voxel size 45.61 µm; power 10 W; voltage 140
kVNMVP229196-tiffs-503-899MicroCT tiff series, holotypic maxilla (NMV
P229196) of Galleonosaurus dorisae (part 3); Zeiss Xradia XRM Versa520
X-Ray Microtomography: voxel size 45.61 µm; power 10 W; voltage 140
kVNMVP229196-tiffs-901-1199MicroCT tiff series, holotypic maxilla (NMV
P229196) of Galleonosaurus dorisae (part 4); Zeiss Xradia XRM Versa520
X-Ray Microtomography: voxel size 45.61 µm; power 10 W; voltage 140 kVNMV
P229196-tiffs-1203-1499MicroCT tiff series, holotypic maxilla (NMV
P229196) of Galleonosaurus dorisae (part 5); Zeiss Xradia XRM Versa520
X-Ray Microtomography: voxel size 45.61 µm; power 10 W; voltage 140
kVNMVP229196-tiffs-1505-1689MicroCT tiff series, holotypic maxilla (NMV
P229196) of Galleonosaurus dorisae (part 6); Zeiss Xradia XRM Versa520
X-Ray Microtomography: voxel size 45.61 µm; power 10 W; voltage 140
kVTable S1List of cranial specimens examined first-hand in the studyHerne
etal Table S1.docxText S1Additional remarks and information on the
phylogenetic data and analyses used in the studyHerne etal - Text
S1.docxText S2Phylogenetic character listHerne etal - Text
S2.docxSupplemental Data 1Phylogenetic dataset (TNT) used in the study.
The TNT file can be converted to .nex from the ‘export (nexus format)’
function in TNT, or alternatively can be opened by ‘open file’ in Mesquite
and navigate to the file, and save as a ‘...nex’.Herne etal - Suppl Data
1.tnt
Australia