Aussiedraco
Encyclopedia
Aussiedraco is a genus
of basal
ornithocheiroid
pterodactyloid pterosaur
from the early Cretaceous
of Australia
.
Aussiedraco is known from holotype
QM F10613, a partial mandibular symphysis housed at the Queensland Museum
, recovered from rocks of the Toolebuc Formation
, about 70 km east of Boulia, western Queensland
, dating to Albian
stage. It was named by Alexander W.A. Kellner
, Taissa Rodrigues and Fabiana R. Costa in 2011
and the type species
is Aussiedraco molnari. The generic name is derived from "Aussie", a shortened form of Australia
n, and "draco", from Latin
meaning dragon
. The specific epithet honours Ralph E. Molnar, who first described the specimen in 1980.
The symphysis fragment is 88 milimetres long and very straight and narrow, with a lanceolate not-expanded tip and triangular cross-section. It lacks a keel or crest and is convex on top, with a median narrow deep groove not reaching the tip, but flat at the bottom. As far as can be judged from the empty elliptical tooth-sockets, the lower jaws carry at least five pairs of teeth, which are rather large and become more outwards inclining and procumbent towards the front. Ausiedraco is estimated to have been smaller in size than Mythunga
, a pterosaur from the same formation.
Kellner e.a. assigned Aussiedraco to the Pteranodontoidea, a clade
roughly containing the same species as the Ornithocheiroidea
sensu Unwin. Aussiedraco would be closely related to the Anhangueridae.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of basal
Basal (phylogenetics)
In phylogenetics, a basal clade is the earliest clade to branch in a larger clade; it appears at the base of a cladogram.A basal group forms an outgroup to the rest of the clade, such as in the following example:...
ornithocheiroid
Ornithocheiroidea
Ornithocheiroidea is an extinct group of pterosaurs within the suborder Pterodactyloidea.-Locomotion:Ornithocheiroids, like other pterosaurs, are considered to have been skilled fliers as well as adept at moving on the ground...
pterodactyloid pterosaur
Pterosaur
Pterosaurs were flying reptiles of the clade or order Pterosauria. They existed from the late Triassic to the end of the Cretaceous Period . Pterosaurs are the earliest vertebrates known to have evolved powered flight...
from the early Cretaceous
Cretaceous
The Cretaceous , derived from the Latin "creta" , usually abbreviated K for its German translation Kreide , is a geologic period and system from circa to million years ago. In the geologic timescale, the Cretaceous follows the Jurassic period and is followed by the Paleogene period of the...
of Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
.
Aussiedraco is known from holotype
Holotype
A holotype is a single physical example of an organism, known to have been used when the species was formally described. It is either the single such physical example or one of several such, but explicitly designated as the holotype...
QM F10613, a partial mandibular symphysis housed at the Queensland Museum
Queensland Museum
The Queensland Museum is the state museum of Queensland. The museum currently operates four separate campuses; at South Brisbane, Ipswich, Toowoomba and Townsville.The museum is funded by the State Government of Queensland.-History:...
, recovered from rocks of the Toolebuc Formation
Toolebuc Formation
The Toolebuc Formation is a geological formation in Queensland, Australia whose strata date back to the Early Cretaceous. Dinosaur remains are among the fossils that have been recovered from the formation.-Vertebrate paleofauna:...
, about 70 km east of Boulia, western Queensland
Queensland
Queensland is a state of Australia, occupying the north-eastern section of the mainland continent. It is bordered by the Northern Territory, South Australia and New South Wales to the west, south-west and south respectively. To the east, Queensland is bordered by the Coral Sea and Pacific Ocean...
, dating to Albian
Albian
The Albian is both an age of the geologic timescale and a stage in the stratigraphic column. It is the youngest or uppermost subdivision of the Early/Lower Cretaceous epoch/series. Its approximate time range is 112.0 ± 1.0 Ma to 99.6 ± 0.9 Ma...
stage. It was named by Alexander W.A. Kellner
Alexander Kellner
Alexander Wilhelm Armin Kellner is a Liechtensteinian/Brazilian paleontologist, a leading expert in the field of the study of pterosaurs....
, Taissa Rodrigues and Fabiana R. Costa in 2011
2011 in paleontology
-Lobopods:-Arachnids:-Insects:-Newly named jawless vertebrates:-Newly named acanthodian:-Newly named cartilaginous fishes:-Newly named bony fishes:-Newly named lepospondyls:-Newly named temnospondyls:-Newly named lissamphibians:...
and the type species
Type species
In biological nomenclature, a type species is both a concept and a practical system which is used in the classification and nomenclature of animals and plants. The value of a "type species" lies in the fact that it makes clear what is meant by a particular genus name. A type species is the species...
is Aussiedraco molnari. The generic name is derived from "Aussie", a shortened form of Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
n, and "draco", from Latin
Latin
Latin is an Italic language originally spoken in Latium and Ancient Rome. It, along with most European languages, is a descendant of the ancient Proto-Indo-European language. Although it is considered a dead language, a number of scholars and members of the Christian clergy speak it fluently, and...
meaning dragon
Dragon
A dragon is a legendary creature, typically with serpentine or reptilian traits, that feature in the myths of many cultures. There are two distinct cultural traditions of dragons: the European dragon, derived from European folk traditions and ultimately related to Greek and Middle Eastern...
. The specific epithet honours Ralph E. Molnar, who first described the specimen in 1980.
The symphysis fragment is 88 milimetres long and very straight and narrow, with a lanceolate not-expanded tip and triangular cross-section. It lacks a keel or crest and is convex on top, with a median narrow deep groove not reaching the tip, but flat at the bottom. As far as can be judged from the empty elliptical tooth-sockets, the lower jaws carry at least five pairs of teeth, which are rather large and become more outwards inclining and procumbent towards the front. Ausiedraco is estimated to have been smaller in size than Mythunga
Mythunga
Mythunga is a genus of pterodactyloid pterosaur from the late Early Cretaceous of Australia. It is known from a partial skull found in marine rocks of the Albian-age Toolebuc Formation near Hughenden, Queensland. Only the snout and part of the jaws are known...
, a pterosaur from the same formation.
Kellner e.a. assigned Aussiedraco to the Pteranodontoidea, a clade
Clade
A clade is a group consisting of a species and all its descendants. In the terms of biological systematics, a clade is a single "branch" on the "tree of life". The idea that such a "natural group" of organisms should be grouped together and given a taxonomic name is central to biological...
roughly containing the same species as the Ornithocheiroidea
Ornithocheiroidea
Ornithocheiroidea is an extinct group of pterosaurs within the suborder Pterodactyloidea.-Locomotion:Ornithocheiroids, like other pterosaurs, are considered to have been skilled fliers as well as adept at moving on the ground...
sensu Unwin. Aussiedraco would be closely related to the Anhangueridae.