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Class, ECHINODER MATA. 
Order, BLASTOIDEA. 
NUCLEOBLASTID®. 
Acentrotremites Lther. f& Carp. 1883 
— ellipticus ............ Cumb. 
Allogecrinus...... Ether. & Carp. 1881 
— Austinii ............ TOR pal Of aeepe aeenos 
ASTROCRINIDE. 
Astrocrinus ...... T. & T. Austin, 1842 
ZYGOCTINUS .occceeee Bronn, 1848 ...... 
Romer, 1848 
De Koninck & Le Hon, 1854) 
» 
” 
Astrocrinites ...... Ether. 1876 ..... 
— Benniei ............ JOSEP caoopecoedo-||-4||22 
— tetragonus ......... T. & T. Aust. ,..)--+|-- 
CoDASTERID&. 
(PH ENOSCHISMID®.) 
Codaster voiiscc. sass M ‘Coy, 1849 
Codonaster ......... Romer, 1851...... 
Heteroschisma  Wachsmuth, 1883-5 
— trilobatus............ MES COUR riecssetses: 
— var. acutus ......... MS COU ccnscevesns 
GRANATOBLASTIDS. E. & C, 1886. 
Granatocrinus ...... Troost, 1850 
FA Hall, 1862 ..... 
Mitra (pars) ...... Cumb. 1826 ..... 
Orbitremites ....).. Gray, 1840 ...... 
— campanulatus ./... ME COU nevecareer 
— Derbiensis ........ SOW. csscssccescoes- 
— ellipticus............ ISIE. cenggeooqeceone 
ECHINODERMATA. 
REFERENCES. 
Mitra elliptica, Reliquiw Conservate, p. 33, t B, £. 1-3 (Middle Group), 1826. 
Acentrotremites, Ether. & Carp. Cat. Blastoidea, Geol. Dept Brit. Mus, (Nat. 
Hist.) p. 235, t. 13, f. 17-19, 1886. (Non Pent, elliptica, Shy.) 
Ann. Mag. Nat. Hist. 5 ser. vol. vii, p. 281-292, t. 15, 16. 
Astrocrinites, Q. J. Geol. Soc. vol. xxxii, p. 103, t.12, f.1-11; t. 13, f. 12-22, | 
1876, Astrocrinus, Ether. & Carp. Cat. Blastoidea, Geol. Dept. Brit. Mus. 
(Nat. Hist.) p. 301, t. 19, f. 1; t. 20, £..3-20, 1886. 
Astrocrinites, Am Mag. Nat. Hist. vol.x, p. 110, 1842. Astrocrinites, Ether. 
Junr, Q. J. Geol. Soc. vol. xxxii, t. 13, f. 26, 1876. Astrocrinus, Nther. & | 
Carp. Cat. Blastoidea, Geol. Dept. Brit. Mus. (Nat, Hist.) p. 300 t. 20, f. 1, 2. 
1886. 
CARBONIFEROUS. 
Ann. Mag. Nat. Hist. vol. iii, p. 251, 1849; ib. Brit. Pal. Foss. fase.1, p. 23, _ 
t. 3D, f. 8 (Codonaster, exp). plate). 
Codaster, Ether. & Carp. Cat. Blas- | 
toidea, Geol. Dept. Brit. Mus. (Nat. Hist.) p. 268, t. 12, £.8; t.13, f£.1-15; | 
t. 18, f. 1, 1886. 
Brit. Pal. Foss. fase. 1, p. 123, t. 3 D, f. 7. Pentremites ? astroformis, Austin 
(MS.), Ann. Mag. Nat. Hist. vol. x, p. 111, 1842. P. pentayonalis, Forbes, 
Mem. Geol. Surv. vol. ii, pt. 2, p. 529, f.a. Cod. trilob. var. acutus, Ether. 
& Carp. loc. cit. p. 269, t. 13, f. 9-12, 153 t. 16, f. 2, 1886, 
Pentremites, Brit. Pal. Foss. fase. 1, p.123, t. 3 D, f. 9. Granatocrinus, Ether. 
& Carp. Cat. Carb. Blastoidea, Geol. Dept. Brit. Mus. (Nat. Hist.) p. 251, 
t. 8, f. 12-15; t. 9, £. 8-10; t. Io, f. 9, 10; t. 17, f. 3, 1886. 
Pentremites, Zool. Jour. vol. ii, No. 7, p. 317, t.11, £.33 ib. Phill. Geol. York. 
pt. 2, p. 207, t.3, f. 10. Granatocrinus, Ether, & Carp. Cat. Carb. Blastoidea, 
Geol. Dept. Brit. Mus. (Nat. Hist.) p. 250, t. 6, £. 23; t.9, £. 1-73 t. 11, 
f£. 11-13; t. 17, f£. 4, 1886. 
Pentremites, Zool. Jour. vol. ii, No. 7, p. 317, t. 11, £.4,1826; ib. Phill. Geol. 
York. pt. 2, p. 207, t. 3, f. 6-8, 1826. Granatocrinus, Ether. & Carp. Cat. 
Carb, Blastoidea, Geol. Dept. Brit. Mus. (Nat. Hist.) p. 253, t.6, f. 21; t. 8, 
f. 16-20; t.)10, £) 12-10 ;' t. 17, £. 6, 7, 1886. 
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