Wabulacinus ridei
Encyclopedia
Wabulacinus ridei lived during the early miocene
in Riversleigh
. It is named after David Ride, who made the first revision of thylacinid fossils. The material was found in system C of the Camel Spurtum assembledge.
W. ridei was a carnivorous, quadrupedal marsupial in Australia. In appearance it resembled a dog with a long snout. Its molar teeth were specialized for carnivory; the cups and crest were reduced or elongated to give the molars a cutting blade.
W. ridei is known from a right maxillary fragment (QMF 16851) containing molars one and two to the anterior section of the infraorbital foramen
that was dorsal to the third molar
. The left dentary fragment (QMF 16852) contains a partial second premolar
and a full third molar. Premolar 3 and molars one and two are missing with the alveolus
intact, mo material remains after molar three.
Muirhead (1997 p. 372) describes W. ridei as having the following features that are unique: para
meta
crista
on the first molar is straight, entoconid either missing of combined with the hypoconid in a more posterior position, the loss or reduction of styler
crests, small metaconid, talon
id basin reduced by the lingual
(toward the tongue) placement of the hypoconid. Dasyurid type features include the infraorbital foramen away from the jugal
and a large hypoconid. Only one feature of the tooth links this species to Ngamalacinus
, and that is the metaconid and protoconid are reduced. Features that are in common with the Thylacinus
genus are the centrocrista is straight on the first upper molar, the angle of the crest at the paracone
and metacone is wider than plesiomorphic thylacinidae
and the loss of metaconid and further widening of the crests increasing the size of the talonid (back half of the tooth).
Miocene
The Miocene is a geological epoch of the Neogene Period and extends from about . The Miocene was named by Sir Charles Lyell. Its name comes from the Greek words and and means "less recent" because it has 18% fewer modern sea invertebrates than the Pliocene. The Miocene follows the Oligocene...
in Riversleigh
Riversleigh
Riversleigh, in North West Queensland, is Australia's most famous fossil site. The 100 km² area has fossil remains of ancient mammals, birds and reptiles of Oligocene and Miocene age...
. It is named after David Ride, who made the first revision of thylacinid fossils. The material was found in system C of the Camel Spurtum assembledge.
W. ridei was a carnivorous, quadrupedal marsupial in Australia. In appearance it resembled a dog with a long snout. Its molar teeth were specialized for carnivory; the cups and crest were reduced or elongated to give the molars a cutting blade.
W. ridei is known from a right maxillary fragment (QMF 16851) containing molars one and two to the anterior section of the infraorbital foramen
Infraorbital foramen
Above the canine fossa is the infraorbital foramen, the end of the infraorbital canal; it transmits the infraorbital artery, vein, and infraorbital nerve.-External links: *...
that was dorsal to the third molar
Molar (tooth)
Molars are the rearmost and most complicated kind of tooth in most mammals. In many mammals they grind food; hence the Latin name mola, "millstone"....
. The left dentary fragment (QMF 16852) contains a partial second premolar
Premolar
The premolar teeth or bicuspids are transitional teeth located between the canine and molar teeth. In humans, there are two premolars per quadrant, making eight premolars total in the mouth. They have at least two cusps. Premolars can be considered as a 'transitional tooth' during chewing, or...
and a full third molar. Premolar 3 and molars one and two are missing with the alveolus
Dental alveolus
Dental alveolus are sockets in the jaws in which the roots of teeth are held in the alveolar process of maxilla with the periodontal ligament. The lay term for dental alveoli is tooth sockets...
intact, mo material remains after molar three.
Muirhead (1997 p. 372) describes W. ridei as having the following features that are unique: para
Para
Para may refer to:*Para Loga, one among the seven Logas in Ayyavazhi mythology*Para-quaternions, expression from algebra in mathematics*Paramedic is a first response ambulance crew member...
meta
Meta
Meta- , is a prefix used in English to indicate a concept which is an abstraction from another concept, used to complete or add to the latter....
crista
Crista
Cristae are the internal compartments formed by the inner membrane of a mitochondrion. They are studded with proteins, including ATP synthase and a variety of cytochromes. The maximum surface for chemical reactions to occur is within the mitochondria...
on the first molar is straight, entoconid either missing of combined with the hypoconid in a more posterior position, the loss or reduction of styler
Styler
Styler may refer to:*Alan Styler*Divine Styler*Glyn Styler*Kara Styler*Sidney Styler*Trudie Styler...
crests, small metaconid, talon
Talon
A talon is a sharp claw of an animal, especially a bird of prey, such as the eagle, hawk, falcon, owl, or buzzard. It may also refer to:Places:* Talon, Nièvre, a commune in the Nièvre département in France...
id basin reduced by the lingual
Lingual
Lingual may refer to:* Rap Crew, LINGUAL, an underground widespread hip-hop group from Berlin, Germany. The Group was founded in 2010 with their former member Freddy K. Their music is based on oldschool features with mixtures of Rap, Funk and Jazz and consists of 4 members, Sam-Which, Kurt...
(toward the tongue) placement of the hypoconid. Dasyurid type features include the infraorbital foramen away from the jugal
Jugal
The jugal is a skull bone found in most reptiles, amphibians, and birds. In mammals, the jugal is often called the malar or Zygomatic. It is connected to the quadratojugal and maxilla, as well as other bones, which may vary by species....
and a large hypoconid. Only one feature of the tooth links this species to Ngamalacinus
Ngamalacinus timmulvaneyi
Ngamalacinus timmulvaneyi lived during the early Miocene and has been found in Riversliegh.N. timmulvaneyi was a carnivorous, quadrupedal marsupial in Australia. In appearance it resembled a dog with a long snout. Its molar teeth were specialized for carnivory, the cups and crest were reduced or...
, and that is the metaconid and protoconid are reduced. Features that are in common with the Thylacinus
Thylacinus
Thylacinus is a genus of extinct carnivorous marsupials from the order Dasyuromorphia. The only recent member was the Thylacine , which became extinct in 1936 due to hunting. The other animals in the group all lived in prehistoric times in Australia...
genus are the centrocrista is straight on the first upper molar, the angle of the crest at the paracone
Paracone
An atmospheric reentry or spaceflight mission abort concept using an inflatable cone.A notable feature of the paracone concept is that it facilitates an abort throughout the entire flight profile....
and metacone is wider than plesiomorphic thylacinidae
Thylacinidae
The animals in the Thylacinidae family were all carnivorous marsupials from the order Dasyuromorphia. The only recent member was the Thylacine , which became extinct in 1936...
and the loss of metaconid and further widening of the crests increasing the size of the talonid (back half of the tooth).