Trigonocerataceae

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m (Protected "Trigonocerataceae" ([move=sysop] (indefinite)))
(added phylogeny diagram)
 
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Flower 1950 (Fig 1 Phylogeny of the Nautiloidea) shows the Rutoceratida and Centroceratida as forming one the three branches of later nautiloids which he derived at that time from the Barrandeoceratida. The other two being the Selenochilida and the Nautilida. The Centroceratida (Flower 1950) were divided into four families, the Centroceratidae, Triboloceratidae,  Domatoceratidae, and Syringonautilidae. The Centroceratidae of Flower 1950 are of course the Centroceratidae of Kummel 1964; the Triboloceratidae the Trigonoceratidae, the Donmatoceratidae the Grypoceratidae, while the Syringonautilidae of course remained as is.  
Flower 1950 (Fig 1 Phylogeny of the Nautiloidea) shows the Rutoceratida and Centroceratida as forming one the three branches of later nautiloids which he derived at that time from the Barrandeoceratida. The other two being the Selenochilida and the Nautilida. The Centroceratida (Flower 1950) were divided into four families, the Centroceratidae, Triboloceratidae,  Domatoceratidae, and Syringonautilidae. The Centroceratidae of Flower 1950 are of course the Centroceratidae of Kummel 1964; the Triboloceratidae the Trigonoceratidae, the Donmatoceratidae the Grypoceratidae, while the Syringonautilidae of course remained as is.  
The Permoceratidae was named by Miller and Collinson in 1953 for the genus Permoceras Miller and Collinson 1953 and therefor was unavailable for the classification of Flower 1950.
The Permoceratidae was named by Miller and Collinson in 1953 for the genus Permoceras Miller and Collinson 1953 and therefor was unavailable for the classification of Flower 1950.
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==Phylogeny==
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Dev  | Miss  | Penn  | Perm    | Trias |
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    ----Centroceratidae->     
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      |--Trigonoceratidae->|
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      `-- Grypoceratidae-------------->|
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                          |        `-->|Syringonautilidae
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                          `-->|Permoceratidae                                                 
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Creadits: [[user:John M|John M]] 12 June 2012
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Credits: [[user:John M|John M]] 12 June 2012

Latest revision as of 17:09, 13 June 2012

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