Image: haeckel acanthometra

Acanthometra:
Xiphacantha ciliata (Haeckel) = Xiphacantha sp.
Xiphacantha spinulosa (Haeckel) = Stauracantha spinulosa (Haeckel, 1860)
Stauracantha quadrifurca (Haeckel) = Phyllostauridae sp.?
Pristacantha polyodon (Haeckel) = Pristacantha polyodon Haeckel, 1887
Lithoptera dodecaptera (Haeckel) = Lithopteridae sp.?
Acantholonche peripolaris (Haeckel) = Gigartaconidae sp.?, core spicule
Acantholonche favosa (Haeckel) = Gigartaconidae sp.?, core spicule
- from the book sets: Art Forms in Nature (Kunstformen der Natur) - by Ernst Haeckel (1899-1904).

- من صور كتب: النماذج الفنية في الطبيعة، لـ إرنيست هيكل (نشر ما بين 1899-1904 م.)