About those that do come from such contexts, Mettinger's caution is relevant: "We have to seriously consider the possibility that these were regarded as postament
animals for the deity, who was understood as invisible, standing on the backs of the animals" (p.
The central zone forms the hypostase and other proximal nucellar structures, such as the postament and Zuleitungsbahn (conducting passage: see below).
Proximal nucellar structures include the hypostase, postament, podium, and perisperm.
In Lomandra, at least on the side of the megagametophyte facing the highly vascularised raphe, where there is no outer integument, dermal cells degenerate soon after fertilisation, leaving the Zuleitungsbahn as a resistant strand (postament: see below).
In several Asparagales there are records of so-called chalazal haustoria, where the developing endosperm invades the lateral parts of the proximal nucellus, breaking down the lateral tissue and leaving a central postament (often with a hypostase: see below).
A postament is a remnant proximal column of nucellar tissue (Figs.
The postament and central conducting passage (Zuleitungsbahn) are homologous structures at different stages of development, commonly associated with enlarged dermal cells and also with large persistent antipodals.
Zuleitungsbahn/postament: Absent = 0; present at anthesis (Zuleitungsbahn) or post-fertilisation (postament) = 1.
Postaments and podia are nucellar structures of the developing seed.