Trimeroceratidae

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'''Characters''' (from Sweet 1964): Exogastric, mostly compressed brevicones with slender, empty siphuncles. Aperture visored; mature peristome with median dorsal sinus.
'''Characters''' (from Sweet 1964): Exogastric, mostly compressed brevicones with slender, empty siphuncles. Aperture visored; mature peristome with median dorsal sinus.
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==Taxonomy==
 
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[[Oncoceratidae|<==]]Trimeroceratidae
 
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    |--''Clathroceras'' Foerste 1926 S64
 
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    |    `--*''C. sulcatum'' (Barrande 1865) [=''Phragmoceras sulcatum''] S64
 
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    |--''Eotrimeroceras'' Foerste 1928 S64
 
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    |    `--*''E. jupiterense'' Foerste 1928 S64
 
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    |--''Pentameroceras'' Hyatt 1884 S64
 
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    |    `--*''P. mirum'' (Barrande 1865) [=''Gomphoceras mirum''] S64
 
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    |--''Trimeroceras'' Hyatt 1884 S64
 
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    |    |--*''T. staurostoma'' (Barrande 1865) [=''Gomphoceras staurostoma''] S64
 
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    |    `--''T. gilberti'' Kindle & Breger 1904
 
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    |--''Inversoceras'' Hedström 1917 S64
 
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    |    |--*''I. perversum'' (Barrande 1865) S64 [=''Phragmoceras perversum'' S64; incl. ''I. constrictum'' T64]
 
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    |    `--''I. percurvatum'' [incl. ''I. barrandei''] T64
 
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    `--''Stenogomphoceras'' Foerste 1930 S64
 
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        |--*''S. chadwicki'' Foerste 1930 S64
 
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        |--''S. contractum'' Foerste 1930 P68
 
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        |--''S. gracile'' Foerste 1930 P68
 
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        `--''S. inflatum'' Foerste 1930 P68
 
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<nowiki>*</nowiki> Type species of generic name indicated
 
==References==
==References==
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[P68] Purnell, L. R. 1968. Catalog of the Type Specimens of Invertebrate Fossils. Part I: Paleozoic Cephalopoda. ''United States National Museum Bulletin'' 262: 1-198.
 
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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.
 
[T64] Teichert, C. 1964. Morphology of hard parts. In ''Treatise on Invertebrate Paleontology'' pt. K. ''Mollusca 3. Cephalopoda – General Features – Endoceratoidea – Actinoceratoidea – Nautiloidea – Bactritoidea'' (R. C. Moore, ed.) pp. K13-K53. The Geological Society of America and the University of Kansas Press.
[T64] Teichert, C. 1964. Morphology of hard parts. In ''Treatise on Invertebrate Paleontology'' pt. K. ''Mollusca 3. Cephalopoda – General Features – Endoceratoidea – Actinoceratoidea – Nautiloidea – Bactritoidea'' (R. C. Moore, ed.) pp. K13-K53. The Geological Society of America and the University of Kansas Press.

Revision as of 04:52, 10 August 2012

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