ECHINODERMATA. 
PALAOZOIC. 
CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
SSS SS Sa casaeenencanncent 
¢ =r fale hale 5 3 
| |e SSIES lslels ele /2 
yal Sleroiaelelc g a 
al 1s Pe sla lsisikts3 
Alalal = -(8/Ble 7) z= sIé 
SPECIES. slalalel iSiclala| Sie halehalsls 
Mle lslalwlelsiAisisiSiSinlele 3|= 
|S /RISTElEISSIFISlelelelslslele 
SIS S/S (2/88) Slalcle.2/s (Si S12 |g 
HISIRIBIS RISD IE IE IE IS /<ipia lea 
PALECHINID®. 
Palewchinus? ...... Scouler, 1840... 
— Phillipsie ...... SEHD Gara cenieca| eae ees | tes aan [es “| * |]. 
ASTERIADE. 
Paleocoma......... Salter, 1857 
— colvini............ BYE 5. Reaceah acco O-8! Goo) Bag) ood so ace nool ded ben allees|s 
— cygnipes......... ISON e cece ves cce| sre|ess can fee [neal taefeselies | oes * 
— Marstoni......... RY Soemeoeoneead [005] (905) lest laad Ka - zy 
SS RECARO ep SILL “Gedapenenbac jou bc fs6d fode| cal |bec4 lear’ see lane) [ee ocol Real aed lace Incl local les 
——VORMITOLMIS) see SQUL-. secseseceess|ersfsce|ecc|eoefecelews|tacltoe[ ees K|!se=| noel seel| ows 
OPHIURID®. 
Paleeodiseus ...... Salter, 1857 .. 
wom FOTOX. Aovesscstece ISGUEse esc peceasee|cos| ace |-=+| coafuse| senless|eocl evs +] x | 
MELOCRINID. 
Periechocrinus ... Austin, 1843... 
Geocrinus ...... D’Orb.1847 ... 
— articulosus ...... Aust iccscccecter ool (bee eer ed eel deel aed eel Lee ie |e 
— limonium ...... ISNS scnecpppemecel 60d) 005) ood] bcd Jade faa4] loos ood be «| 
— moniliformis .;, Mill. ...........cJecs[eos|oscfess foc. £ [oorleee| 
— simplex ......... ISGLEM eels sacsvs | cacfeea| ovelens|ue|ese| es) are] ves * |. 
Whenricasocrinus ... Aste, 1843 ..5|.20|s<0|c+-|'s0<feoe]ees|-ne|cca | soc|seal cos] se) aacfece|ses|uce 
PISOCRINID®. 
Pisocrinus ......... Koninck,1858.. 
— ornatus ......... KOM. vivsecscense|ooe|ers|oes|onefooe| veal eve|eoePoss | *]- 
spills, <icescesses KOM: veccsvevecse| see |-0+]essfovefoselere|oos|osefoee # [vee] x 
MELOCRINID®. 
Platycrinus ?...... Miller, 1821 
Actinocrinus (pars) ...........000 
— pecten ............ Shs pbcancex oo bool eee] eal bo-2 Weal otal foced eed Pe laa Pap 
— retiarius ......... DUAL voce vee eee | oral ess rou ere | eee cea leccleee| eel acs Ae e 
OOD aicescee sacs ISLE conesconseod ore) ca ea) Hee] eel ee eee bod Beal lee * 
CYSTIDER. 
Pleurocystites ... Billings, 1854.. 
— Rugeri ......... Nese eee ca peel ea Bed Bae «|x |}. 
CYATHOCRINID2. 
Poteriocrinus ...... Miller, 1821... 
— Dudleyensis ... Aust. ..uicceve.v: Lepay [oui bod Geel decd se 4 ee) foe lee 
CAMBRIAN AND SILURIAN. 
REFERENCES. 
Mem. Geol. Surv. vol. ii, p. 384, t. 29. 
Ann, Mag. Nat. Hist. 1857, vol. xx, p. 328; ib. Siluria, 4 ed. 
p.127, Foss. 21, f. 4. 
.| Ann, Mag. Nat. Hist. 2 ser. vol. xx, p. 329. 
Ann. Mag. Nat. Hist. 2 ser. vol. xx, p. 328, t. 9, f..3; ib. 
Siluria, 4 ed. p.127, Foss, 21, f. 3. 
Vide Rhophalocoma. 
Bdellacoma, Amn. Mag. Nat. Hist. 2 ser. vol. xx, p. 329. 
Ann, Mag. Nat. Hist. 2 ser. vol. xx, p. 333, t. 9, f. 6. 
Ann, Mag. Nat. Hist. 1843, p. 204. 
Cat. Camb. and Sil. Foss. Woodw. Mus. Cambr. p. 121. 
Actinocrinus, Phill. Sil. Syst. t. 18, f.4. Geocrinus, D’Orb. 
Prod. p. 46. P. costatus, Austin, Ann. Mag. Nat. Hist. 
1843, p. 204; Siluria, 4ed. t.13, f.1, 2; Nat. Hist. Crino. 
p. 116, t. c. 
Cat. Camb. and Sil. Foss. Woodw. Mus. Cambr. p. 121. 
Vide Actinocrinus. 
Bull, Ac. Roy. Scien. Brux. 2 ser. vol. iv, p. 107, t. 2, f.12, 
13; ib. Geologist, 1858, vol. i, p. 184, t. 4, £.12, 13. 
Bull, Ac. Roy. Scien. Brux. 2 ser. vol. iv, p. 106, t. 2, £. 8- 
11; ib, Geologist, 1858, vol. i, p.183, t. 4, f. 8-11. 
Cat. Camb. and Sil. Foss. Woodw. Mus. Cambr. p. 122. 
Sil. Syst. p. 674, t.17, f.9; ib. Siluria, 4 ed. t.14, f. 9. 
Cat. Camb, and Sil. Foss. Woodw. Mus, Cambr. p. 162. 
Mem. Geol. Sury. vol. iii, p. 288, t. 23, f. 5. 
Vide Cyathocriuus. 
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