Image: haeckel spirobranchia

Spirobranchia:
Dayia navicula (Sowerby) = Dayia navicula (J. de C. Sowerby, 1837), upper shell from inside
Strophomena rhomboidalis (Wilckens) = Leptaena rhomboidalis (Wilckens, 1769), upper shell from inside
Cyrtina heteroclita (Schlotheim) = Cyrtina heteroclita (Defrance, 1824), upper shell from inside
Spirifer gibbosus (Barrande) = Ivanothyris gibbosus (Barrande, 1879) / Delthyris gibbosus (Barrande, 1879), shell (4a: right side, 4b: outer rim, 4c: stalk)
Rhynchonella nympha (Barrande) = Stenorhynchia nympha (Barrande, 1847), shell (5a: right side, 5b: stalk, upper shell at bottom)
Rhynchonella eucharis (Barrande) = Eucharitina eucharis (Barrande, 1847), shell (6a: outer rim, 6b: upper shell from outside)
Rhynchonella inaurita (Sandberger) = Rhynchonella inaurita (Sandberger & Sandberger, 1856), shell (7a: left side, 7b: upper shell from outside)
Rhynchonella psittacea (Davidson) = Hemithiris psittacea (Gmelin, 1790), animal without shell and intestinal sac, opened (upper half at top)
Lingula anatina (Lamarck) = Lingula anatina Lamarck, 1801, animal without shell (9a: from above, 9b: opened, upper half at top)
Terebratula flavescens (Lamarck) / Waldheimia australis (Davidson) = Magellania flavescens (Lamarck, 1819), shell and animal (10a: right side of animal in shell, 10b: left side of animal in shell, 10c: upper shell from inside)
Atrypa insolita (Barrande) = Eospinatrypa insolita (Barrande, 1879), upper shell from outside
Rhynchonella oblita (Barrande) = Rostricellula ambigena (Barrande, 1847), deformed specimen, upper shell from outside
Terebratulina serpentis (d'Orbigny) = Terebratulina retusa (Linnaeus, 1758), animal without shell from above
Terebratulina Murrayi (Davidson) = Eucalathis murrayi (Davidson, 1878), upper shell from inside
Spirigerina concentrica (d'Orbigny) = Athyris concentrica (von Buch, 1834), upper shell from inside
Rhynchonella nigricans (Fischer) = Notosaria nigricans (Sowerby, 1846), upper shell from inside
Nucleospira pisum (Sowerby) = Nucleospira pisum (J. de C. Sowerby, 1839), upper shell from inside
Atrypa marginata (Dalman) = Spirigerina marginalis (Dalman, 1828), upper shell from inside
- 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.)