PAL.BOZOIC. 



ANNELIDA. 



CAMBRIAN AND SILURIAN. 



SPECIES. 



Sub-Kingdom, ANNULOSA. 

 Div. Anabthbofoda. 

 Class, ANNELIDA. 

 Orders, Tubicola 

 „ Errantia 



Palaeozoic. 



DOBSIBBANCHIATA. 



Annelida, tracks of ... Salt 



DOBSIBBANCHIATA. 

 Aphrodita ? Linn. 1735 ... 



— Sp Portl 



DOBSIBBANCHIATA. 



Arenicolites Salter, 1856 



(Double annelidan burrows)... 

 Scolithus Hall (part) 



— didymus Salt 



— linearis Hall 



sparsus Salt. 



- Sp. 



- Sp. 



Salt. 

 Salt. 



informis M'Coy 



— regularis Sark.. 



— Sp Salt. , 



- Sp. 



, Salt. 



CAMBRIAN. LOWEB Sit. 



rPPER SILIBIAN. 



Cephaiobbanchiata. 



Cornulites Schloth. 1820. 



— serpularius Schloth 



DOBSIBBANCHIATA. 



Crossopodia M'Coy, iS 



— lata M'Coy .. 



— Scotica M'Coy .. 



34 



DOBSIBBANCHIATA. 



Chondrites ? Sternb. 1833 ... 



(Annelide burrows, filled up) ... 

 — acutanguhiB ... M'Coy 







P 



REFERENCES. 



ERRANTIA. 



occur through all the Palaeozoic rocks, under various generic 

 names. 



ERRANTIA. 

 Geol. Rept. Lond. p. 362, t. 24, f. 8. 



ERRANTIA. 



Arenicola, Q. J. Geol. Soc. vol. xii, p. 248, t. 4, f . 1 ; ib. 

 Siluria, 4ed. p. 28, Foss. 2, f. 1. 



Scolithus, Pal. New York, vol. i, t. I, f. I. Arenicolites, 

 Mem. Geol. Surv. vol. iii, p. 292, 1. 11 B, f. 27; ib. Siluria, 

 4 ed. p. 40, Foss. 4 ; ib. Q. J. Geol. Soc. vol. xv, p. 368, 

 woodcut. 



Q.J. Geol. Soc. vol. xv, p. 203, t. 5, f. 1-4 (small and large 

 conditions or habit). 



Q.J. Geol. Soc. vol. xv, p. 380, 1. 13, f. 29, 30. 



Mem. Geol. Surv. (Geol. N. Wales), vol. iii, p. 243, f . 2, wood- 

 cut. (Scolicites.) 



ERRANTIA. 



Brit. Pal. Foss. t. 1 A, f . 5 ; ib. M'Coy, Q. J. Geol. Soc. 

 vol. iv, p. 2 24. 



Brit. Pal. Foss. t. 1 A, f. 4; ib. M'Coy, Q. J. Geol. Soc. 

 vol.iv, p. 223; ib. Harkness, Q.J. Geol. Soc. vol.xi, p.473. 



Q.J. Geol. Soc. vol.xi, p.473. 



Mem. Geol. Surv. (Geol. N. Wales), vol.iii, p. 243, f. 1, wood- 

 cut 5 ib. Q. J. Geol. Soc. vol. xii, p. 246. 



Mem. Geol. Surv. (Geol. N. Wales), vol. iii, p. 292, t. 3, f. 4, 

 t. 4, f. 13. 



TUBICOLA. 



Petref. t. 29, £.7; ib. Sil. Syst. p. 672, t. 26, f. 5, 8; ib. 

 Siluria, 4ed. 1. 16, f. 3, 10 ; t. 10, f. 2. 



ERRANTIA. 



Brit. Pal. Foss. p. 130, 1. 1 D, f. 14. 



Brit. Pal. Foss. p. 130, 1. 1 D, f. 15; ib. Siluria, 4ed. p. 201, 



Foss. 44, f . 4. 



