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Topic: Teinolophos

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Steropodon

Kollikodontidae

Ornithorhyncus anatinus

Monotremata

Monotreme

Platypus

History of Australia since 1901

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	BioEd Online: Ear-splitting discovery rocks mammal identity
		Because the mammalian arrangement is so complex, scientists believed that the set-up had evolved on just a single occasion, in an ancestor that gave rise to placental animals (including humans), marsupials and monotremes (such as the duck-billed platypus).
		What makes the Teinolophos specimen surprising is a large groove in its adult jawbone, which indicates that the smaller bones had not yet detached.
		Teinolophos lived after monotremes split from the placental and marsupial mammalian groups.
	www.bioedonline.org /news/news-print.cfm?art=1563 (472 words)

	Science News
		A trough (red arrow) on the lower jawbone of Teinolophos trusleri, an ancient egg-laying mammal, indicates that it had a reptile-style ear structure and its modern descendants' ear structure evolved independently of that in other mammals.
		Fossils of an ancient egg-laying mammal indicate that the configuration of the bones in all living mammals' ears arose at least twice along independent evolutionary pathways, paleontologists say.
		Now, analyses of a jawbone from a specimen of Teinolophos trusleri, a shrew-size creature that lived in Australia about 115 million years ago, have dealt a blow to that notion.
	www.phschool.com /science/science_news/articles/groovy_bones.html (403 words)

	Non-reptilian life in Mesozoic Australia
		The mammal material from the Strzelecki Group of sites is much better preserved, and dates to about 115 million years ago.
		When first prepared, Teinolophos ("extended ridge") was thought to be a eupantothere, a group of mammals that is thought to be ancestral to both marsupials and placental mammals.
		Once the single tooth of the specimen (a lower jaw) had been fully prepared, it turned out to be more similar to Steropodon than to the primitive eupantotheres, indicating that it was another monotreme.
	www.geocities.com /dannsdinosaurs/non-rept.html (2620 words)

	Platypus ancestor found - National - www.smh.com.au
		The 115 million-year-old fossil was found in rock on Victoria's south-east coast by a team of researchers and volunteers from Monash University and Melbourne Museum in 2002.
		The world of archaeology was stunned last October with the discovery of a well-preserved skeleton of a fully-grown female, barely a metre tall, in a cave on the Indonesian island of Flores.
		The Monash research team had previously uncovered specimens of the teinolophos trusleri that were crushed, but this one was in pristine condition.
	www.smh.com.au /articles/2005/02/11/1108061853137.html (450 words)

	Prehistoric jawbone reveals evolution repeating itself
		The discovery of the prehistoric jawbone, reported in the Feb. 11, 2005, issue of Science, suggests that the transformation of bones from the jaw into the small bones of the middle ear occurred at least twice in the evolutionary lines of living mammals after their split from a common ancestor some 200 million years ago.
		At a dig on the south coast of the Australian state of Victoria, paleontologists found a lower jawbone of the world's oldest-known monotreme, Teinolophos trusleri, a small primitive mammal much like today's shrew.
		Many paleontologists have doubted that such a seemingly complex adaptation could have originated more than once in mammals, but according to the authors of the paper, the evidence of T. trusleri indicates that it did.
	www.eurekalert.org /pub_releases/2005-02/uocm-pjr020805.php (587 words)

	Prehistoric jawbone reveals evolution repeating itself
		At a dig on the south coast of the Australian state of Victoria, paleontologists found a lower jawbone of the world’s oldest known monotreme, Teinolophos trusleri, a small primitive mammal hardly bigger than today’s shrew.
		This suggests that the development of the acute hearing system with the chain of bones from the eardrum to the inner ear developed at least twice in the history of mammals, he said, once in the group that gave rise to the placentals and marsupials, and another in monotremes, which include T.
		Fossil jaws from other groups of early mammals also appear to have supported accessory bones, though the evidence is not as clear as in Teinolophos.
	chronicle.uchicago.edu /050414/jawbone.shtml (536 words)

	MESOZOIC MAMMALS?; Monotremata, an internet directory:
		Nevertheless, from page 794): "However, attribution of this specimen to Teinolophos is problematic, it may rather belong to an ausktribosphenid." They don't provide elaboration on this matter, perhaps as it's not of central concern to their study.
		The bearer of these glad tidings is a dentary of Teinolophos, the oldest monotreme hitherto described, (p.910).
		Teinolophos obviously isn't concerned with past discussions, as it presents entirely fresh evidence.
	home.arcor.de /ktdykes/monotrem.htm (15752 words)

	Paleoanthropology
		But like Morganucodon and very much unlike living monotremes, Teinolophos exhibits a well-developed internal mandibular trough, suggesting that the angular (tympanic), the articular (malleus), and other "reptilian" jaw bones remained attached to the mandible through ligaments long after Teinolophos and living monotremes split from the common ancestor of marsupials and placentals.
		Another recent study shows that the middle ear bones were no longer accommodated by the internal mandibular trough but were still linked via the ossified Meckel's cartilage to the mandible in some triconodont mammals.
		All this changed when a fossil of Teinolophos trusleri, an ancestor of modern monotremes that lived 115 million years ago, was unearthed.
	focosi.altervista.org /paleoanthropology.html (13029 words)

	Re: Paleo finds of the year 2005
		A Lower Cretaceous mammal eating a baby dinosaur was good, but I'm less enthusiatic about the scraps of mammal bones in the area of that naughty stomach.
		The possibility of the parallel evolution of mammalian inner ears suggested by a new specimen of the monotreme /Teinolophos/ was also interesting, although doubts have subsequently been voiced concerning the attribution of the fossil concerned.
		Quoting from my webpage on monotremes: "from page 794): "However, attribution of this specimen to Teinolophos is problematic, it may rather belong to an ausktribosphenid." They don't provide elaboration on this matter, perhaps as it's not of central concern to their study.
	dml.cmnh.org /2005Dec/msg00496.html (260 words)

	Vertebrate Paleontology Blog: Mammal Ear Bones, evolved once, twice or three times?
		Sound is transported through these bones from the tympanic membrane ("ear drum") to the fluid filled inner ear.
		A remarkible early Cretacoues fossil mammal (reported in the Feb. 11th issue of Science by Tom Rich et al.) from Victoria, Australia, Teinolophos, exhibits a prominent mandidular trough and well-developed ridge that implys that the middle ear bones were still in contact with the lower jaw.
		Yet, based on the "funky" morphology of the teeth, Teinolophos is closely related to living Monotremes.
	ucsu.colorado.edu /~burgerb/blog/2005/02/mammal-ear-bones-evolved-once-twice-or.html (195 words)

	El PaleoFreak - El oído re-evolucionado
		El hallazgo de la mandíbula inferior de un Teinolophos trusleri, un mamífero de hace 115 millones de años, puede provocar una pequeña revolución en paleontología.
		Pero T. Rich y sus colaboradores afirman en la revista Science Science que el oído medio del Teinolophos trusleri es de tipo simple, como el de los reptiles (en los reptiles, el oído contiene al estribo, pero el yunque y el martillo son huesos indiferenciados que pertenecen a la mandíbula).
		Porque si se mantiene el criterio clásico, el Teinolophos trusleri no puede ser un mamífero.
	www.paleofreak.blogalia.com /historias/26650 (577 words)

	Monotreme - Free net encyclopedia (Site not responding. Last check: 2007-10-09)
		These fragments, from species Steropodon galmani, are the oldest known fossils of monotremes.
		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).
	www.netipedia.com /index.php/Monotreme (715 words)

	University of Chicago Hospitals: Prehistoric jawbone reveals evolution repeating itself
		Jawbone fossil of the tiny monotreme species Teinolophos trusleri.
		Many paleontologists have doubted that such a seemingly complex adaptation could have originated more than once in mammals, but according to the authors of the paper, the evidence of T.
		"The trough tells us that such a change had not yet occurred in Teinolophos, even though 115 million years ago monotremes had split off on their own evolutionary line from the marsupials and placentals."
	www.uchospitals.edu /news/2005/20050211-monotreme.html (647 words)

	OSEL.CZ - Teinolophos – Nejstarší ptakořitný savec ve spletitých cestičkách evoluce
		OSEL.CZ - Teinolophos – Nejstarší ptakořitný savec ve spletitých cestičkách evoluce
		Tým paleontologů pod vedením Tima Riche z Museum Victoria v Melbourne během vykopávek na jižním pobřeží australského státu Victoria objevil ve vrstvách z období křídy 115 miliónů let starou spodní čelist malého ptakořitního savce velikosti rejska a vědecky ji pojmenoval Teinolophos trusleri.
		Samotný nález se změnil ve velké překvapení, když se ukázalo, že Teinolophos měl tzv.
	www.osel.cz /index.php?clanek=1226&akce=show2 (692 words)

	Lightning Ridge and Inverloch - Fossil Sites - Australian Beasts - ABC Science
		More mammal fossils have been found near the small coastal town of Inverloch in southern Victoria.
		Researchers agree that Teinolophos is another monotreme but the fur begins to fly when the relationships of Ausktribosphenos and Bishops come into question.
		Most researchers think that these tiny jaws with teeth belong to monotremes.
	www.abc.net.au /science/ausbeasts/sites/lightningridge.htm (277 words)

	Comment on "Independent Origins of Middle Ear Bones in Monotremes and Therians" (II) -- Rougier et al. 309 (5740): ...
		Teinolophos jaws NMV P216575, P212933, and P216680 indicate
		Teinolophos should be corroborated among other Mammalia, immediate
		bones is lacking in Teinolophos; individual facets and ridges
	www.sciencemag.org /cgi/content/full/309/5740/1492b (899 words)

	Teinolophos - Wikipedia
		Sie lebte in der Kreidezeit in Australien und zählt zu den frühesten bekannten Vorfahren des Schnabeltieres.
		Von Teinolophos wurden bislang nur Teile des Unterkiefers mit einzelnen Molaren gefunden.
		Allerdings war Teinolophos deutlich kleiner als Steropodon oder das heutige Schnabeltier und erreichte nur eine Körperlänge von rund 10 Zentimetern.
	de.wikipedia.org /wiki/Teinolophos (201 words)

	Fossil find complicates story of how the elephant got its ears - 14 Feb 2005 - World News (Site not responding. Last check: 2007-10-09)
		But palaeontologists from the University of Chicago and the Museum of Victoria in Melbourne have discovered a lower jawbone of the world's oldest known monotreme with middle-ear bones still attached to its jaw.
		Finding the unusual jawbone of Teinolophos trusleri, a small rodent-like animal much like the shrew, with an attached middle ear suggests that the auditory equipment of this early mammal had evolved separately from the rest of the group, said Tom Rich, curator of vertebrate palaeontology at the museum.
		These jaws may be the oldest evidence of monotremes on Earth.
	www.nzherald.co.nz /index.cfm?c_id=2&ObjectID=10010866 (701 words)

	News in Science - Early mammals had poorer hearing - 11/02/2005
		The researchers analysed bones from a now-extinct monotreme, the class of egg-laying mammals to which the platypus belongs.
		The shrew-like creature, called Teinolophos trusleri, appeared to have ears with a structure more like non-mammalian ears, which may have meant poorer hearing.
		Until now, scientists have thought all mammals have a distinctive middle ear linking the ear drum with the nervous system.
	www.abc.net.au /science/news/stories/s1300243.htm (466 words)

	Mesozoic Eucynodonts, Vocabulary
		In terms of this project, this taxon is used as meaning the most recent common ancestor of Sinodelphys and a koala, and all of its descendants.
		In terms of this project, this taxon is used as meaning the most recent common ancestor of Kollikodon, Teinolophos and a duck-billed platypus, and all of its descendants.
		In terms of this project, this taxon is presently accepted as the most basal known family within Mammalia.
	home.arcor.de /ktdykes/vocab.htm (6558 words)

	spektrumdirekt (Site not responding. Last check: 2007-10-09)
		Was bedeutet: Das so kompliziert aufgebaute Hörorgan der Säugetiere war nicht gemeinsames Erbe, sondern muss mindestens zweimal unabhängig voneinander entstanden sein.
		Ihre verschwommenen Beziehungen zu den späteren Kloaken-, Beutel- und Plazentatieren lassen aber keine klare Einordnung in einen Stammbaum und damit Rückschlüsse auf den Entstehungszeitpunkt zu.
		Teinolophos aber macht nun deutlich wie keiner zuvor: Einmal reicht nicht, Meister Evolution wurde zweimal gleichermaßen aktiv.
	www.wissenschaft-online.de /artikel/773196&template=bild_popup&_bild=1 (548 words)

	The Thylacine Museum - Introducing the Thylacine: About Australia and the Marsupials (page 3)
		This site has produced a range of marsupial fossils, many with strong South American connections.
		The oldest monotreme species yet known is Teinolophos trusleri, whose fossils are dated at 123 million years old (Early Cretaceous), from Flat Rocks, Victoria.
		This specimen has been fossilized in the form of opal, and was found at Lightning Ridge, New South Wales.
	www.naturalworlds.org /thylacine/introducing/about_marsupials_3.htm (868 words)

	Response to Comments on "Independent Origins of Middle Ear Bones in Monotremes and Therians" -- Rich et al. 309 (5740): ...
		Thus, we are confident that the referred specimen
		NMV P212933 is a monotreme congeneric with Teinolophos and that
		We interpreted a flat longitudinal surface on the floor of the
	www.sciencemag.org /cgi/content/full/309/5740/1492c (1585 words)

	Tiny bone a big deal for mammals - National - www.theage.com.au
		Scientists believe they have found the jaw bone of a tiny creature related to the platypus that lived 115 million years ago in Victoria's south-east.
		A group of international palaeontologists, including Melbourne researchers, said they found the jaw bone of Teinolophos trusleri (Teinolophos trusleri) in Inverloch, south Gippsland.
		Monash University honorary research fellow Dr Tom Rich, Melbourne Museum's curator of vertebrate palaeontology, said the find was a world first.
	www.theage.com.au /news/National/Tiny-bone-a-big-deal-for-mammals/2005/02/11/1108061831451.html?from=moreStories (262 words)

	Dinosaur Dreaming Report 2004
		This brings the total to 33 specimens over the last 11 years (almost a third of them found in 2004).
		Of this years haul; 4 are attributed to Teinolophos trusleri, 2 Bishops whitmorei, 1 may be a new species of Ausktribosphenos (larger than A.nyktos), 1 is unknown (but similar to something found in 2001), and 1 may be from a multituberculate (the first such evidence from Australia).
		I know - that leaves 1 unaccounted for; but hey, I didn't write the site report.
	dml.cmnh.org /2004Nov/msg00275.html (512 words)

	Orbis Quintus » 2005 » February (Site not responding. Last check: 2007-10-09)
		The current theory was that they split off together, from a common monotreme ancestor 140 million years ago.
		The name of this monotreme species is Teinolophos trusleri.
		Once again, it was a blind download, but it was a compilation from a period that i’ve been interested in.
	orbis-quintus.net /blog/index.php?m=200502&paged=4 (3768 words)

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