What is the proper term for the use of archaic kanji?


I noticed that in various works of Japanese art, the artists sign their work
with a seal whose contents range from fairly regular kanji to very abstract
variations of kanji. I have also seen it used in calligraphy, as shown in the
example below.

I heard that this is called "seal script", but no one has been able to point
me to any more information on it beyond Wikipedia. Is there a name for this
form of writing and better resources for learning about it?

![Photograph of a piece of Japanese artwork with calligraphy in an unknown
script.](https://i.stack.imgur.com/9qb29.png)




The kanji script that you see in the first (rightmost) line of your picture,
as well as in the seal at the bottom left is called 篆書体【てんしょたい】.




The kanji script that you see in the first (rightmost) line of your picture,
as well as in the seal at the bottom left is called 篆書体【てんしょたい】.

