PALAOZOIC, 
CONCHIFERA. PERMIAN. 
LOWER 
GROUP. 
— 
3/2 
e\2 
Slel sles 
SPECIES. | sels fa iF 
bo]. 2 lm] x Lo 
2S /Z1E\2 
Slels|ae 
Sub-Kingdom, MOLLUSCA. 
LAMELLIBRANCHIATA. Blainy. 
Class, CONCHIFERA. Lamarck. 
Pelecypoda. Goldfuss. 
Group, Monomyarra. Lamarck. 
MYTILIpE. 
PRE ee enconcticooned Keyserling, 1846 
Mytilus ......... 
Myalina ....... (pars) Auctorum 
Modiola ......... 
— Hausmanni......... Gold fens swevene alletell 
* 
AVICULID. ‘ 
Avicula 
== ATLONEDEDSIS!| veaeee AAO pasmectaece===+||(see| ene |nee| ee ? 
— pinneformis ...... Geinitz ............ Healt lesel <0 x 
— radialis .....ccc0. Tet sespesocogeconoe sce|fooe| (God facta lane 
— speluncaria ......... Schloth..... 0.000 see [oee[eoef ok | ok 
Bakevellia .........++ King, 1848 ...... ene| (God lone eel loo 
AVICULIDE. 
Gervillia ..0........0:0. Defrance, 1820... 
Bakevellia King, 1848 ...... 
Mytilus .. Linneus, 1758... 
— antiqua......., aescoee UNSC, nose ceesoes ers fase eal age se 
— bicarinata «jf... RUNG eaeesasierenees ped| {ood loos 
— IMflAta oo. creerscseee (BROUM trace acess scp|tcod food ooo 
— keratophyga ...... Schloth. .....0..000 Mo fesal lace endl | 
— Sedgwickiana ....., ROG) asieanassas sexe a [eos| [coe] (eee * 
— tumida........0.... KONG) ceva avencats A oallcet less bare x 
364 
| Upper Limestone. 
| Pass up. 
UPPER 
GROUP. 
nr 
REFERENCES, 
Mytilus, Petrefact. Germanie, vol. ii, p. 168, t. 138, f. 4, 1837. Myt. squamosus, 
Sow. Trans. Geol. Soe. Lond. 2 ser. vol. iii, p. 120. Myt. acuminatus, Sow. Phill. 
Ency. Geol. vol. i, p. 190, f. 2, 1837; ib. De Verneuil, Bull. Soc. Géol. de France, 
2 ser, vol. i, p. 32, 1844. Mytilus Hausmanni, Goldf. Geinitz, Grundriss. d. 
Versteinerungen, p. 453, 1846; p. 9, Ic, t. 4, f. 12, &e. Mytilus squamosus, 
Sow. King, Mono. Brit. Perm. Foss. Pal. Soc. p. 159, t. 14, f. 1-7. Aucella 
Hausmanni, Goldf. Geinitz, Dyas. Zechst. und das Roth. p. 72, 73, t. 14, f. 8-16. 
Mono. Brit. Perm. Foss. Pal. Soc. p. 157, t. 13, f. 24. 
Dyas. Zechst. und das Roth. p. 77, t. 14, f. 1-4. P. priseca, Howse. 
Vide A. speluncaria. 
Gryphites, Akad. Minch. p. 30, t. 5, f. 1. Av. grypheoides, Sow. Trans. Geol. 
Soe. Lond. 2 ser. vol. iii, p. 119. Avicula, Geinitz Versteinerungen, p. 10, t. 4, 
f.18,19. Monotis, King, Mono. Brit. Perm. Foss. Pal. Soc. p. 155, t. 13, £.5—-21. 
Avicula speluncaria, Schloth, Geinitz, Dyas. Zechst. und das Roth. p. 74, t. 14, 
f. 5-7. Avieula (monotis) radialis, Phill. Ency. Met. vol. iv, t. 3, f.5. King, 
Mono. Brit. Perm. Foss. Pal. Soe. p. 157, t. 13, F. 22, 23. 
“ide Gervillia. 
Avicula, Goldf. Petref. Germ. pt. 2, p. 126, t.116, f.7. <Avieula inflata, A. Bin- 
neyi, A. discors, Brown, Trans, Manch. Geol. Soc. vol. i, p. 65, t. 4, f. 25, 28, 
1841. Gervillia, Howse, Notes on the Perm. Syst. p. 29. Bakevellia antiqua, 
Miinst. King, Mono. Brit. Perm. Foss. Pal. Soe. p. 168, t. 14, f. 28-34. Gerv. 
antiqua, Geinitz, Dyas. Zechst. und das Roth. p. 78, t. 14, f. 17-20; ib. Kirkby, 
Q. J. Geol. Soc. vol. xvii, p. 303. 
Vide G. keratophyaga. 
Vide G. antiqua, 
Mytilites, Akad. Minch. vol. vi, p. 30, t. 5, f. 2. Avicula keratophyga, Goldf. 
Petrefacta, pt. 2, p. 126, t. 116, f. 6; ib. Howse, Trans. Tyneside Nat. Field Club, 
vol. i, p. 249, 1848. Gervillia, Howse, Notes on the Perm. Syst. p. 30, 1858. 
Bakevellia, King, Mono. Brit. Perm, Foss. Pal. Soc. p. 167, t. 14, f. 24-27. Ger- 
villia, Geinitz, Dyas. Zechst und das Roth. p. 77, t. 14, f. 21, 22. .B. bicarinata, 
King, Mono. Perm. Foss. Pal. Soc. p. 170, t. 14, f. 41, 42. 
Bakevellia, King, Mono. Brit. Perm. Foss. Pal. Soc. p. 171, t. 14. £. 38-40. Ger- 
villia, Geinitz, Dyas. Zechst. und das Roth. p. 78, t. 14, f. 23-25. 
Bakevellia, King, Mono. Brit. Perm. Voss. Pal. Soc. p.170, t. 14, £. 35-37. Avicula 
inflata, Brown, Howse, Trans. Tyneside Nat. Field Club, vol. i, p. 2 
