Anton Seder was an illustrator, designer, art teacher and art school director active in the late 19th and early 20th centuries, who worked in a style that combined Art Nouveau, naturalism and perhaps a touch of magic realism.
The Animal in Decorative Art was a design resource, one of many published in the late 19th century, and featured a wide and wild variety of animals and related design elements. These range from the ordinary, like fish, birds, frogs and reptiles, to the fantastic, including fanciful variations on sea creatures and wonderfully imaginative dragons.
The link is to a page on the Public Domain Review that publishes nice versions of the images. There is also a digital copy of the book itself on the Internet Archive.
Whether there is any connection at all, I don’t know; but I see echoes of Seder’s dragons in John Tenniel’s Jabberwock.