Table 1. Structural features in dead AS layers.

Layer	Monomer length (bp)	Monomer types*	Arrangement	Age group**
Blue	171	R1 (B), R2 (A)	irregular	old
Yellow	171	M1 (A)	monomeric	old
Yellow-striped	172	V1 (A)	monomeric	old
Olive-green	172	H1 (A), H2 (A)	dimeric	ancient
Red	172	H3 (A)	monomeric	ancient
Grey	172	H4 (A)	monomeric	ancient

*: The monomer types for blue and yellow layers were assigned previously [25],[26], and for the rest of the layers, in this paper. Division of AS into pure A type and AB type was introduced previously [1],[26].

**: Division of the old AS into “old” and “ancient” groups is introduced in this paper as a result of primate and cladistic analysis.