Romeriida
Pohon evolusi Romeriida terbagi menjadi dua dahan
A. Dahan Captorhinidae
B. DAhan dua cabang
1. Cabang Protothyrididae
2. Cabang Diapsida
Bacaan lanjut
Osborn H. F. 1903. On the primary divison of the Reptilia into two sub- classes, Synapsida and Diapsida. Science 17: 275-276.
Pirlot P. 1969. Morphologie évolutive des chordés. Montréal: Les Presses de l'Université de Montréal.
Reisz R. R. 1981. A diapsid reptile from the Pennsylvanian of Kansas. University of Kansas Publications of the Museum of Natural History 7: 1-74.
Sumber gambar
http://tolweb.org/accessory/Phylogeny_and_Classification_of_Amniotes?acc_id=462
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