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- Steropodon abstract "Steropodon galmani was a prehistoric species of monotreme, or egg-laying mammal, that lived during the middle Albian stage, in the Lower Cretaceous period. It is the second-earliest known relative of the platypus. Steropodon is known only from a single opalised jaw with three molars, discovered at the Griman Creek Formation, Lightning Ridge, New South Wales, Australia, by brothers David and Alan Galman. It was a large mammal for the Mesozoic, being 40–50 cm long. The lower molars are 5–7 mm in length, with a width of 3–4 mm. A length of 1–2 cm is more typical for Mesozoic mammals. Also from Lightning Ridge is Kollikodon ritchiei.The molars "bear striking resemblance to the tribosphenic pattern characteristic of living therians..." (Pascual). However, there are also differences: there is no entoconid, and an absence of wear seems to suggest that the upper molars (as yet unknown) did not have a protocone, and so implying that there was a double origin of tribosphenic teeth, one group represented by the living placentals and marsupials, and the other group being the monotremes bearing 'pseudo-tribosphenic' teeth.Woodburne (2003, p. 212) reports that the holotype is a right mandible named AM F66763. The preserved molars are m1–m3. Page 237 includes: "In Steropodon, the mandibular canal suggests the presence of a bill, with a bill also known in Obdurodon dicksoni and Ornithorhynchus anatinus."A fine photo of the opalised lower jaw can be found on page 182 in:Mackness, Brian, Prehistoric Australia, Sydney, Golden Press, 1987.".
- Steropodon binomialAuthority Ralph_Molnar.
- Steropodon class Mammal.
- Steropodon family Extinction.
- Steropodon genus Extinction.
- Steropodon kingdom Animal.
- Steropodon order Monotreme.
- Steropodon phylum Chordate.
- Steropodon thumbnail Steropodon_BW.jpg?width=300.
- Steropodon wikiPageID "668723".
- Steropodon wikiPageRevisionID "601902336".
- Steropodon binomial "Steropodon galmani".
- Steropodon binomialAuthority "Archer, Flannery, Ritchie, & Molnar, 1985".
- Steropodon classis "Mammalia".
- Steropodon familia "†Steropodontidae".
- Steropodon fossilRange "Early Cretaceous".
- Steropodon genus "†Steropodon".
- Steropodon hasPhotoCollection Steropodon.
- Steropodon name "Steropodon".
- Steropodon ordo Monotreme.
- Steropodon phylum Chordate.
- Steropodon regnum "Animalia".
- Steropodon species "†S. galmani".
- Steropodon subject Category:Cretaceous_mammals.
- Steropodon subject Category:Mammal_genera.
- Steropodon subject Category:Prehistoric_mammals_of_Australia.
- Steropodon subject Category:Prehistoric_monotremes.
- Steropodon type Animal100015388.
- Steropodon type Chordate101466257.
- Steropodon type CretaceousMammals.
- Steropodon type LivingThing100004258.
- Steropodon type Mammal101861778.
- Steropodon type Monotreme101871875.
- Steropodon type Object100002684.
- Steropodon type Organism100004475.
- Steropodon type PhysicalEntity100001930.
- Steropodon type PrehistoricMammalsOfAustralia.
- Steropodon type PrehistoricMonotremes.
- Steropodon type Prototherian101871543.
- Steropodon type Vertebrate101471682.
- Steropodon type Whole100003553.
- Steropodon type Animal.
- Steropodon type Eukaryote.
- Steropodon type Mammal.
- Steropodon type Species.
- Steropodon type Animal.
- Steropodon type BiologicalLivingObject.
- Steropodon type EukaryoticCell.
- Steropodon type Mammal.
- Steropodon type Organism.
- Steropodon comment "Steropodon galmani was a prehistoric species of monotreme, or egg-laying mammal, that lived during the middle Albian stage, in the Lower Cretaceous period. It is the second-earliest known relative of the platypus. Steropodon is known only from a single opalised jaw with three molars, discovered at the Griman Creek Formation, Lightning Ridge, New South Wales, Australia, by brothers David and Alan Galman. It was a large mammal for the Mesozoic, being 40–50 cm long.".
- Steropodon label "Steropodon galmani".
- Steropodon label "Steropodon galmani".
- Steropodon label "Steropodon galmani".
- Steropodon label "Steropodon galmani".
- Steropodon label "Steropodon".
- Steropodon label "Steropodon".
- Steropodon label "Steropodon".
- Steropodon label "Steropodon".
- Steropodon label "Стероподон".
- Steropodon label "硬齒鴨嘴獸".
- Steropodon sameAs Steropodon.
- Steropodon sameAs Steropodon.
- Steropodon sameAs Steropodon_galmani.
- Steropodon sameAs Steropodon.
- Steropodon sameAs Steropodon_galmani.
- Steropodon sameAs 스테로포돈.
- Steropodon sameAs Steropodon_galmani.
- Steropodon sameAs Steropodon.
- Steropodon sameAs Steropodon_galmani.
- Steropodon sameAs m.031bs5.
- Steropodon sameAs Q131338.
- Steropodon sameAs Q131338.
- Steropodon sameAs Steropodon.
- Steropodon wasDerivedFrom Steropodon?oldid=601902336.
- Steropodon depiction Steropodon_BW.jpg.
- Steropodon isPrimaryTopicOf Steropodon.
- Steropodon name "Steropodon".
