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Topic: Obdurodon dicksoni

Related Topics

Monotrematum sudamericanum

Obdurodon

Ornithorhyncus anatinus

Ornithorhynchidae

Steropodon galmani

Kollikodon ritchiei

Teinolophos trusleri

Zaglossus robustus

Zaglossus

Monotreme

Tachyglossidae

Platypus

Species

Cloaca

Obdurodon sudamericanum

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	Obdurodon Information
		Obdurodon differed from modern platypuses in that it still had teeth (except for juveniles, the modern platypus does not have teeth).
		The coronoid process and angulary process of Obdurodon dicksoni have quite disappeared in the platypus, leaving the platypus's skull flat on the sides.
		It seems, due to the shape of the beak, that Obdurodon dicksoni nourished itself digging in the sides of rivers whereas the platypus digs in the bottom of the river.
	www.bookrags.com /wiki/Obdurodon (574 words)

	Obdurodon (Site not responding. Last check: 2007-11-05)
		Obdurodon differed from modern platypi in that it still had teeth (except for juveniles, the modern platypus does not have teeth).
		Obdurodon dicksoni is known from a single skull found at Riversleigh, Australia.
		Obdurodon insignis is known from some teeth and fragments of jaw and pelvis found at the Tirari Desert, South Australia.
	www.encyclopedia-1.com /o/ob/obdurodon.html (171 words)

	Digimorph - Obdurodon dicksoni (fossil platypus)
		We describe the Obdurodon endocast with reference to endocasts extracted from skulls of the three species of extant monotremes, particularly Ornithorhynchus anatinus, the duckbill platypus.
		The trigeminal nuclei, ganglia, and nerves (i.e., trigeminal complex) are enlarged in Obdurodon as evidenced by their casts on the endocast; as is the case in the extant platypus.
		The visibility of enlarged trigeminal nucleus casts on the endocasts of Obdurodon and Ornithorhynchus is a possible synapomorphy of Ornithorhynchidae.
	digimorph.org /specimens/Obdurodon_dicksoni (1291 words)

	Obdurodon -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-11-05)
		Obdurodon is an extinct ((biology) taxonomic group containing one or more species) genus of (Small densely furred aquatic monotreme of Australia and Tasmania having a broad bill and tail and webbed feet; only species in the family Ornithorhynchidae) platypus containing three species.
		It lived during the (From 25 million to 13 million years ago; appearance of grazing mammals) Miocene.
		It is known only from two lower and one upper platypus teeth found at Punta Peligro, (A republic in southern South America; second largest country in South America) Argentina.
	www.absoluteastronomy.com /encyclopedia/O/Ob/Obdurodon.htm (213 words)

	wiki/Obdurodon insignis Definition / wiki/Obdurodon insignis Research (Site not responding. Last check: 2007-11-05)
		Obdurodon is an extinct genusIn biology, a genus (plural genera) is a grouping in the classification of living organisms having one or more related and morphologically similar species.
		Obdurodon insignis is known from some teeth and fragments of jaw and pelvis found at the Tirari Desert, South Australia South Australia is a state of Australia, in the southern central part of the country, along the Southern Ocean.
		It is known only from two lower and one upper platypus teeth found at Punta Peligro, ArgentinaArgentina is a cone-shaped country in southern South America, situated between the Andes in the west and the southern Atlantic Ocean in the east.
	www.elresearch.com /wiki/Obdurodon_insignis (628 words)

	Obdurodon (Site not responding. Last check: 2007-11-05)
		Reference: Archer et al (1992), Description of the skull and non-vestigial dentition of a Miocene platypus (Obdurodon dicksoni n.
		Remarks: Teeth and fragments of jaw and pelvis are known.
		It uses material from the wikipedia article Obdurodon.
	www.eurofreehost.com /ob/Obdurodon.html (213 words)

	Monotreme - Wikipedia, the free encyclopedia
		Fossils from the genera Kollikodon, Teinolophos, and Obdurodon have also been discovered.
		In 1991, a fossil tooth of a 61-million-year-old platypus was found in southern Argentina (since named Monotrematum, though it is now considered to be an Obdurodon species).
		May be part of Ornithorhynchidae; closely related to modern platypus.
	www.wikipedia.org /wiki/Monotreme (794 words)

	Creationism and the Platypus
		The modern platypus has only vestigial teeth which are replaced by horny pads when it is still a juvenile.
		Not true; there are other differences between the modern platypus and the skull of Obdurodon dicksoni than size.
		Description of the skull and non-vestigial dentition of a miocene platypus (Obdurodon dicksoni n.
	www.talkorigins.org /faqs/platypus.html (2239 words)

	Dictionary of Meaning www.mauspfeil.net
		plural_taxon = Species}} ''Obdurodon dicksoni'' ''Obdurodon insignis'' ''Monotrematum sudamericanum'' {{Taxobox_end}} '''Obdurodon*''' is an extinct genus of platypus containing three species.
		The main difference, apart from continent and age, is its size: the teeth of ''Monotrematum'' are around twice as large as other platypuses'.
		There you find a list of all editors and the possibility to edit the original text of the article Obdurodon.
	www.mauspfeil.net /Obdurodon.html (237 words)

	Fossil Record of the Monotremata
		Over several years, a jaw, a pelvis, and teeth of the Miocene platypus Obdurodon insignis were discovered.
		dicksoni, demonstrates that unlike the modern platypus, Obdurodon kept its teeth at maturity.
		Opinions differ on whether Obdurodon may have been aquatic, based on its association with numerous terrestrial marsupials.
	www.ucmp.berkeley.edu /mammal/monotremefr.html (466 words)

	Platypus - Evolution and Conservation
		Skull of Obdurodon (left) compared with modern Platypus (right) The holes in the upper jaw of Obdurodon are alveoli for true teeth - note the horny pads on the modern Platypus instead of teeth.
		Four species related to Platypus have been found in fossil deposits from Australia, including a complete skull of Obdurodon dicksoni and an opalised jaw fragment of Steropodon galmani.
		Although Platypus remains widespread and reasonably common, this trend towards increasing specialisation suggests that it may be moving out onto an evolutionary 'limb' and that its current status should not be taken for granted.
	www.austmus.gov.au /factsheets/platypus.htm (399 words)

	Your group:Fossil Groups: SciComms 04-05: Earth Sciences
		This new species was named Obdurodon dicksoni and proves that in extinct forms of Platypus teeth were present, implying that their loss is a derived feature.
		The snout of this species was similar to that of the extant form, however, questions remain over whether it was aquatic as a consequence of it's close association with a fossilised terrestrial fauna.
		The larger is from an extinct Miocene genus, the Obdurodon.
	palaeo.gly.bris.ac.uk /Palaeofiles/Fossilgroups/Marsupia/monofoss (371 words)

	Following is the monotreme file, as mentioned by Kathleen Hunt. Subject: Monotremes and th
		Where do they fit in the evolution of mammals Few fossil monotremes have been found.
		dicksoni, a complete skull of an adult platypus, again about 15Myr old, and a piece of lower jaw containing three molars, roughly 100Myr old.
		This leaves a substantial gap to the fossils to which the monotremes are considered to be most closely related, the Morganucodontids, and little structural information about the early monotremes.
	www.skepticfiles.org /evolut/monotrem.htm (1105 words)

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