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Topic: Ptilodontoidea


  
  Ptilodontoidea
Ptilodontoidea is a group of extinct mammals from the northern hemisphere.
(This information has been derived from [1] (http://home.arcor.de/ktdykes/ptilodon.htm) MESOZOIC MAMMALS; Ptilodontoidea, an internet directory.
The text of this article is licensed under the GFDL.
www.ebroadcast.com.au /lookup/encyclopedia/pt/Ptilodontoidea.html   (184 words)

  
 [No title]
indet., PMO 169.283, belonging to the superfamily Ptilodontoidea,  with prismatic density of 21491/mm
The magnification is the same in A and B and in both micrographs centers of 12 adjacent prisms in groups have been connected, each forming a  continuous cluster of 12 triangles.
In the superfamily Ptilodontoidea  microprismatic enamels seem characteristic, as well as in all other known extant and extinct mammals with prismatic enamel (6,8).
www.toyen.uio.no /palmus/forskning/g_fosse.html   (1107 words)

  
 Reference.com/Encyclopedia/Neoliotomus
It existed in the age immediately following the extinction of the last dinosaurs and was a member of the extinct order Multituberculata.
It lies within the suborder Cimolodonta and the superfamily Ptilodontoidea.
Much of this information has been derived from MESOZOIC MAMMALS; Ptilodontoidea, an Internet directory.
www.reference.com /browse/wiki/Neoliotomus   (256 words)

  
 Ptilodontoidea - Encyclopedia Glossary Meaning Explanation Ptilodontoidea   (Site not responding. Last check: 2007-10-20)
Here you will find more informations about Ptilodontoidea.
If you find this encyclopedia or its sister projects useful,
* Much of this information has been derived from http://home.arcor.de/ktdykes/ptilodon.htm MESOZOIC MAMMALS; Ptilodontoidea, an Internet directory.
www.encyclopedia-glossary.com /en/Ptilodontoidea.html   (189 words)

  
 MULTITUBERCULATES
This includes the more derived multis, which have been identified from the Lower Cretaceous to the Eocene.
Recognized are the superfamilies Djadochtatheriodea, Taeniolabidoidea, Ptilodontoidea and the Paracimexomys group.
Superfamily: Ptilodontoidea: Some of these genera boast a great many species, though remains are generally sparse.
home.arcor.de /ktdykes/multis.htm   (1313 words)

  
 'MESOZOIC' MAMMALS; Ptilodontoidea, an internet directory
Many names for teeth, some of which have been classified, re-classified and re-re-classified, etc. The exact affinities of Neoliotomus are not clear.
It doesn't seem to be part of this taxon, though it's thought to fit somewhere within Ptilodontoidea.
They also place it within Ptilodontoidea Sloan and Van Valen, 1965.
home.arcor.de /ktdykes/ptilodon.htm   (8679 words)

  
 [No title]
The arginbaatarid p4 is arcuate as in the Cimolodonta, but is unique in having the enamel limited to a part of the crown, and during ontogeny rotating anteroventrally over the worn p2 and p3, which gradually disappear.
Isn't the ptilodont enamel microprismatic, with the exception of the weird bird, Cimolodon?
Should anyone be anxious for the resolution of the final question raised, Cimolodon is indeed the only known referred member of Ptilodontoidea to have had gigantoprismatic enamel.
how-to-become-rich-dotcom.de /celebdesade.htm   (2484 words)

  
 The Purbeck Formation, Lower Cretaceous, of Southern England, UK - A Bibliography - by Dr Ian West.   (Site not responding. Last check: 2007-10-20)
The Cimolodonta are divided into an informal Paracimexomys group; three superfamilies: Ptilodontoidea, Djadochtatherioidea (new), and Taeniolabidoidea (restricted to Taeniolabididae); and five families (superfamily incertae sedis): Eucosmodontidae, Microcosmodontidae, Cimolodontidae, Boffiidae, and Kogaionidae; and some genera incertae sedis.
We argue that the Ptilodontoidea, and less certainly also the Cimolodontidae and Boffiidae, might have originated from among the plagiaulacid Line, a possible intermediate link being the Paracimexomys group.
The remaining Cimolodonta might have originated from unknown members of the Paracimexomys group with separated molar cusps and smooth enamel.
www.soton.ac.uk /~imw/Purbeck.htm   (17704 words)

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