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- Ambondro_mahabo abstract "Ambondro mahabo is a mammal from the middle Jurassic (about 167 million years ago) of Madagascar. The only species of the genus Ambondro, it is known from a fragmentary lower jaw with three teeth, interpreted as the last premolar and the first two molars. The premolar consists of a central cusp with one or two smaller cusps and a cingulum (shelf) on the inner, or lingual, side of the tooth. The molars also have such a lingual cingulum. They consist of two groups of cusps: a trigonid of three cusps at the front and a talonid with a main cusp, a smaller cusp, and a crest at the back. Features of the talonid suggest that Ambondro had tribosphenic molars, the basic arrangement of molar features also present in marsupial and placental mammals. It is the oldest known mammal with putatively tribosphenic teeth; at the time of its discovery it antedated the second oldest example by about 25 million years.Upon its description in 1999, Ambondro was interpreted as a primitive relative of Tribosphenida (marsupials, placentals, and their extinct tribosphenic-toothed relatives). In 2001, however, an alternative suggestion was published that united it with the Cretaceous Australian Ausktribosphenos and the monotremes (the echidnas, the platypus, and their extinct relatives) into the clade Australosphenida, which would have acquired tribosphenic molars independently from marsupials and placentals. The Jurassic Argentinean Asfaltomylos and Henosferus and the Cretaceous Australian Bishops were later added to Australosphenida, and new work on wear in australosphenidan teeth has called into question whether these animals, including Ambondro, did have tribosphenic teeth. Other paleontologists have challenged this concept of Australosphenida, and instead proposed that Ambondro is not closely related to Ausktribosphenos plus monotremes, or that monotremes are not australosphenidans and that the remaining australosphenidans are related to placentals.".
- Ambondro_mahabo class Mammal.
- Ambondro_mahabo family Henosferidae.
- Ambondro_mahabo kingdom Animal.
- Ambondro_mahabo phylum Chordate.
- Ambondro_mahabo thumbnail Ambondro_lingual.jpg?width=300.
- Ambondro_mahabo wikiPageExternalLink app47-001.html.
- Ambondro_mahabo wikiPageExternalLink S1251-8050(01)01612-3.
- Ambondro_mahabo wikiPageExternalLink 5857.
- Ambondro_mahabo wikiPageExternalLink S1055790303001131.
- Ambondro_mahabo wikiPageExternalLink 4524455.
- Ambondro_mahabo wikiPageExternalLink 401057a0.pdf.
- Ambondro_mahabo wikiPageExternalLink 409053a0.html.
- Ambondro_mahabo wikiPageExternalLink 416165a.html.
- Ambondro_mahabo wikiPageExternalLink v5g3921275mk31t4.pdf.
- Ambondro_mahabo wikiPageID "22535664".
- Ambondro_mahabo wikiPageLength "16881".
- Ambondro_mahabo wikiPageOutDegree "96".
- Ambondro_mahabo wikiPageRevisionID "663139671".
- Ambondro_mahabo wikiPageWikiLink Ambondromahabo.
- Ambondro_mahabo wikiPageWikiLink Animal.
- Ambondro_mahabo wikiPageWikiLink Asfaltomylos.
- Ambondro_mahabo wikiPageWikiLink Ausktribosphenos.
- Ambondro_mahabo wikiPageWikiLink Australosphenida.
- Ambondro_mahabo wikiPageWikiLink Bathonian.
- Ambondro_mahabo wikiPageWikiLink Bishops_(genus).
- Ambondro_mahabo wikiPageWikiLink Boreosphenida.
- Ambondro_mahabo wikiPageWikiLink Category:Australosphenida.
- Ambondro_mahabo wikiPageWikiLink Category:Extinct_animals_of_Madagascar.
- Ambondro_mahabo wikiPageWikiLink Category:Jurassic_mammals.
- Ambondro_mahabo wikiPageWikiLink Chordate.
- Ambondro_mahabo wikiPageWikiLink Cingulum_(tooth).
- Ambondro_mahabo wikiPageWikiLink Cladistics.
- Ambondro_mahabo wikiPageWikiLink Cretaceous.
- Ambondro_mahabo wikiPageWikiLink Cristid_obliqua.
- Ambondro_mahabo wikiPageWikiLink Crocodyliformes.
- Ambondro_mahabo wikiPageWikiLink Cusp_(anatomy).
- Ambondro_mahabo wikiPageWikiLink Distal_metacristid.
- Ambondro_mahabo wikiPageWikiLink Echidna.
- Ambondro_mahabo wikiPageWikiLink Entocristid.
- Ambondro_mahabo wikiPageWikiLink Eutheria.
- Ambondro_mahabo wikiPageWikiLink Glossary_of_mammalian_dental_topography.
- Ambondro_mahabo wikiPageWikiLink Gondwana.
- Ambondro_mahabo wikiPageWikiLink Group_(stratigraphy).
- Ambondro_mahabo wikiPageWikiLink Henosferidae.
- Ambondro_mahabo wikiPageWikiLink Henosferus.
- Ambondro_mahabo wikiPageWikiLink Hypoconulid.
- Ambondro_mahabo wikiPageWikiLink Lapparentosaurus.
- Ambondro_mahabo wikiPageWikiLink Laurasia.
- Ambondro_mahabo wikiPageWikiLink Madagascar.
- Ambondro_mahabo wikiPageWikiLink Mahajanga_Basin.
- Ambondro_mahabo wikiPageWikiLink Mammal.
- Ambondro_mahabo wikiPageWikiLink Mandible.
- Ambondro_mahabo wikiPageWikiLink Marsupial.
- Ambondro_mahabo wikiPageWikiLink Metacone.
- Ambondro_mahabo wikiPageWikiLink Metatheria.
- Ambondro_mahabo wikiPageWikiLink Middle_Jurassic.
- Ambondro_mahabo wikiPageWikiLink Molar_(tooth).
- Ambondro_mahabo wikiPageWikiLink Monotreme.
- Ambondro_mahabo wikiPageWikiLink Nature_(journal).
- Ambondro_mahabo wikiPageWikiLink Occlusion_(dentistry).
- Ambondro_mahabo wikiPageWikiLink Paraconid.
- Ambondro_mahabo wikiPageWikiLink Placentalia.
- Ambondro_mahabo wikiPageWikiLink Platypus.
- Ambondro_mahabo wikiPageWikiLink Plesiosauria.
- Ambondro_mahabo wikiPageWikiLink Premolar.
- Ambondro_mahabo wikiPageWikiLink Protocone.
- Ambondro_mahabo wikiPageWikiLink Symmetrodonta.
- Ambondro_mahabo wikiPageWikiLink Talonid.
- Ambondro_mahabo wikiPageWikiLink Tribactonodon.
- Ambondro_mahabo wikiPageWikiLink Tribosphenida.
- Ambondro_mahabo wikiPageWikiLink University_of_Antananarivo.
- Ambondro_mahabo wikiPageWikiLink Wear_facet.
- Ambondro_mahabo wikiPageWikiLink Zhe-Xi_Luo.
- Ambondro_mahabo wikiPageWikiLink File:Australosphenidan_molar_labeled.png.
- Ambondro_mahabo wikiPageWikiLinkText "Ambondro mahabo".
- Ambondro_mahabo wikiPageWikiLinkText "Ambondro".
- Ambondro_mahabo binomial "Ambondro mahabo".
- Ambondro_mahabo binomialAuthority "Flynn et al., 1999".
- Ambondro_mahabo classis "Mammalia".
- Ambondro_mahabo familia "†Henosferidae".
- Ambondro_mahabo fossilRange Middle_Jurassic.
- Ambondro_mahabo genus "Ambondro".
- Ambondro_mahabo genusAuthority "Flynn et al., 1999".
- Ambondro_mahabo imageAlt "Jaw fragment with three cuspidate teeth".
- Ambondro_mahabo imageCaption "Figure 1. Jaw of Ambondro, seen in lingual view . Scale bar is 1 mm.".
- Ambondro_mahabo phylum Chordate.
- Ambondro_mahabo regnum "Animalia".
- Ambondro_mahabo species "A. mahabo".
- Ambondro_mahabo wikiPageUsesTemplate Template:Australosphenida_nav.
- Ambondro_mahabo wikiPageUsesTemplate Template:Clade.
- Ambondro_mahabo wikiPageUsesTemplate Template:Featured_article.
- Ambondro_mahabo wikiPageUsesTemplate Template:Italic_title.
- Ambondro_mahabo wikiPageUsesTemplate Template:Mesozoic_Madagascar_mammals_nav.
- Ambondro_mahabo wikiPageUsesTemplate Template:Reflist.
- Ambondro_mahabo wikiPageUsesTemplate Template:Refn.
- Ambondro_mahabo wikiPageUsesTemplate Template:Taxobox.
- Ambondro_mahabo wikiPageUsesTemplate Template:Wikispecies.
- Ambondro_mahabo subject Category:Australosphenida.
- Ambondro_mahabo subject Category:Extinct_animals_of_Madagascar.