Nothoceratidae

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[[Oncoceratidae|<==]]Nothoceratidae [Bolloceratidae, Cranoceratidae, Cyrtoceratidae]
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<u>Systematic Taxonomy</u> <br/>
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    |--''Nothoceras'' Barrande 1856 S64
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Class: [[Cephalopoda]] <br/>
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    |    `--*''N. bohemicum'' Barrande 1856 S64
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Subclass: [[Nautiloidea]] <br/>
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    |--''Blakeoceras'' Foerste 1926 S64
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Order: [[Oncocerida]] <br/>
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    |    `--*''B. empiricum'' (Barrande 1877) [=''Cyrtoceras empiricum''] S64
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Family: Nothoceratidae
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    |--''Bolloceras'' Foerste 1926 S64
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    |    `--*''B. rex'' (Barrande 1865) [=''Phragmoceras rex''] S64
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    |--''Conostichoceras'' Foerste 1926 S64
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    |    `--*''C. palinurus'' (Barrande 1877) [=''Cyrtoceras palinurus''] S64
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    |--''Cyrthoceratites'' d’Archiac & de Verneuil 1842 [=''Cranoceras'' Hyatt 1884] S64
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    |    `--*''C. depressus'' (Bronn 1835) [=''Cyrtocera depressa'', *''Cranoceras depressum''] S64
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    |--''Lorieroceras'' Foerste 1926 S64
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    |    `--*''L. lorieri'' (Barrande 1870) [=''Trochoceras lorieri''] S64
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    |--''Metaphragmoceras'' Flower 1938 S64
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    |    `--*''M. verneuili'' (Barrande 1865) [=''Phragmoceras verneuili''] S64
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    |--''Paraconradoceras'' Foerste 1926 S64
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    |    `--*''P. rigescens'' (Barrande 1877) [=''Phragmoceras rigescens''] S64
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    |--''Perimecoceras'' Foerste 1926 S64
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    |    `--*''P. contrastans'' (Barrande 1877) [=''Cyrtoceras contrastans''] S64
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    `--''Turnoceras'' Foerste 1926 S64
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        `--*''T. turnus'' (Barrande 1877) [=''Cyrtoceras turnus''] S64
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<nowiki>*</nowiki> Type species of generic name indicated
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The Nothoceratidae comprise Silurian - Upper Devonian [[Oncocerida|oncocerid]] genera of various form, mostly with contracted or visored apertures and ventral siphuncles with concave segments that contain actinosiphonate depostis. Shells include endogastric and exogasric brevicones, planispiral nautilicones, and trochoidal torticones. Derivation is from the [[Oncoceratidae]], probably from ''[[Oonoceras]]'' through ''[[Perimecoceras]]''. No descendant group is known.
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==References==
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A tentative phylogeny, showing included genera, follows.
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[S64] Sweet, W. C. 1964. Nautiloidea – Oncocerida. In ''Treatise on Invertebrate Paleontology'' pt. K. ''Mollusca 3. Cephalopoda – General Features – Endoceratoidea – Actinoceratoidea – Nautiloidea – Bactritoidea'' (R. C. Moore, ed.) pp. K277-K319. The Geological Society of America and the University of Kansas Press.
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[[Oncoceratidae|<==]]Nothoceratidae [<small>Bolloceratidae, Cranoceratidae,<br> Cyrtoceratidae</small>]
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  |-''[[Perimecoceras]]'' Foerste, 1926, U Sil
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  |-''[[Lorieroceras]]'' Foerste, 1926, L Dev
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  |-''[[Nothoceras]]'' Barrande, 1856, M Dev
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  |-''[[Blakeoceras]]'' Foerste, 1926, Sil- M Dev
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  | `-''[[Conostichoceras]]'' Foeste, 1926, M Dev
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  |-Paraconradoceras Foerste, 1926 M Dev
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  | |-Megaphragmoceras Flower, 1938  M Dev
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  | `-Bolloceras Foerste 1926, M-U Dev.
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  |-''[[Turnoceras]]'' Foerste, 1926, M Dev
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    `-Cyrthocerites d'Archiac & DeVerneuil 1842.
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===References===
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Walter C. Sweet. 1064. Nautiloidea – Oncocerida; Treatise on Invertebrate Paleontology pt. K. Mollusca 3. Geological Society of America and University of Kansas Press.  
'''Credits'''
'''Credits'''
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[[User:Christopher|Christopher]] 00:44, 6 April 2010 (UTC)
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[[User:Christopher|Christopher]] 6 April 2010 <br>
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[[User:John M|John M]] 27 May 2012, 30 Sept 2014

Latest revision as of 15:08, 30 September 2014

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