Image: haeckel echinidea

Echinidea:
Clypeaster rosaceus (Lamarck) = Clypeaster rosaceus (Linnaeus, 1758), shell without spines from above
Clypeaster rosaceus (Lamarck) = Clypeaster rosaceus (Linnaeus, 1758), internal organs from above
Encope emarginata (Leske) = Encope emarginata (Leske 1778), shell without spines from above
Encope emarginata (Leske) = Encope emarginata (Leske 1778), shell without spines from below
Echinocyamus pusillus (Müller) = Echinocyamus pusillus (O.F.Müller, 1776), 48-hour-old plutellus larva from below
Echinocyamus pusillus (Müller) = Echinocyamus pusillus (O.F.Müller, 1776), 10-day-old plutellus larva from below
Echinocyamus pusillus (Müller) = Echinocyamus pusillus (O.F. Müller, 1776), 45-day-old juvenile from below
Echinocyamus pusillus (Müller) = Echinocyamus pusillus (O.F. Müller, 1776), 50-day-old juvenile from below
Echinocyamus pusillus (Müller) = Echinocyamus pusillus (O.F. Müller, 1776), 60-day-old juvenile from above
- 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.)