Image: haeckel thuroidea

Thuroidea:
Phyllophorus urna (Grube) = Phyllophorus urna Grube, 1840, adult
Sporadipus botellus (Selenka) = Holothuria impatiens (Forskål, 1775), adult
Synapta digitata = Labidoplax digitata (Montagu, 1815), young auriculata larva
Synapta digitata = Labidoplax digitata (Montagu, 1815), older auriculata larva
Synapta digitata = Labidoplax digitata (Montagu, 1815), young doliolaria larva
Synapta digitata = Labidoplax digitata (Montagu, 1815), older doliolaria larva
Synapta digitata = Labidoplax digitata (Montagu, 1815), young doliolaria larva in cross-section
Stichopus Murrayi (Theel) = Mesothuria murrayi (Théel, 1886), spicule
Myriotrochus Rinkii (Steenstrup) = Myriotrochus rinkii Steenstrup, 1851, spicule
Caudina coriacea (Hutton) = Paracaudina chilensis (Müller, 1850), spicule
Paelopatides aspera (Theel) = Galatheathuria aspera (Théel, 1886), spicule
Elpinia rigida (Theel) = Elpidia rigida Théel, 1882, spicule
Synapta aculeata (Theel) = Protankyra aculeata (Théel, 1886)?, spicule
Synapta glabra (Semper) = Opheodesoma glabra (Semper, 1868), spicule
Colochirus inornatus (Marenzeller) = Plesiocolochirus inornatus (von Marenzeller, 1881), spicule
Stichopus Moebii (Semper) = Isostichopus badionotus (Selenka, 1867), spicule
Chirodota venusta (Semon) = Trochodota venusta (Semon, 1887), spicule
Chirodota venusta (Semon) = Trochodota venusta (Semon, 1887), spicule
Cucumaria crucifera (Semper) = Trachasina crucifera (Semper, 1869), spicule
Thelenota atra (Jaeger) = Holothuria atra Jaeger, 1833, spicule
Arbacia pustulosa (Semon) = ?, spicule
Stichopus Moebii (Semper) = Isostichopus badionotus (Selenka, 1867), 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.)