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Ptyctodontida
Taxonomy
Ptyctodontida was named by Gross (1932).
It was synonymized subjectively with Ptyctodontiformes by Long (2011).
It was assigned to Placodermi by Denison (1975); and to Placodermi by Denison (1978), Dineley and Metcalf (1999), Sepkoski (2002), Young (2010).
It was synonymized subjectively with Ptyctodontiformes by Long (2011).
It was assigned to Placodermi by Denison (1975); and to Placodermi by Denison (1978), Dineley and Metcalf (1999), Sepkoski (2002), Young (2010).
Subtaxa
Entered
by J. Sepkoski on 2003-01-23; modified by L. van den Hoek Ostende on 2013-04-30
Synonymy list
| Year | Name and author |
|---|---|
| 1932 | Ptyctodontida Gross |
| 1975 | Ptyctodontida Denison p. 23 |
| 1978 | Ptyctodontida Denison |
| 1999 | Ptyctodontida Dineley and Metcalf p. 11 |
| 2002 | Ptyctodontida Sepkoski |
| 2010 | Ptyctodontida Young p. 527 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Or. †Ptyctodontida Gross 1932
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G. †Rhamphodopsis Watson 1938
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†Rhamphodopsis threiplandi Watson 1934
†Rhamphodopsis trispinatus Watson 1938
G. †Tollodus Mark-Kurik 1977
Diagnosis
No diagnoses are available