50 
Description of the Specimens. —Two fronds of this plant are figured on Plate V, 
figs. 1 and 2, the latter somewhat enlarged. Both show the actual dichotomy. The 
elongately lanceolate pinnules are only very slightly contracted at the base, as is well 
seen in both specimens. Another fragment is figured on fig. 6 of the same plate, 
twice enlarged. 
Remarks. —This species of Thinnfeldia appears to be a rarer type than T. odonto- 
pteroides, and has been known hitherto only from Australia and South America. 
Occurrence. —-Mount Potts (Kinetic) ; McRae’s, Makarewa, Hokonui Hills (? Rhaetic) ; 
Owaka Creek, Gatlin’s River (? Rhaetic). 
4. Thinnfeldia odontopteroides (Morris). Plate I, fig. 7 ; Plate V, fig. 5. 
1845. Pecopteris odontopteroides Morris, in Strzelecki, Phys. Descrip. N.S. Wales and Van 
Diemen’s Land, p. 249, pi. vi, figs. 2-4. 
1847. Gleichenites odontopteroides McCoy, Ann. and Mag. Nat. Hist., vol. xx, p. 147. 
1869. Alethopteris ? odontopteroides Schimper Traite. Pal. Veget, vol. i, p. 569. 
1869. Cycadopteris odontopteroides Schimper, ibid., p. 488. 
1872. Pecopteris odontopteroides Carruthers, Quart. Journ. Geol. Soc., vol. xxviii, p. 355, 
pi. xxvii, figs. 2, 3. 
1875. Pecopteris odontopteroides Crepin, Bull. Acad. Roy. Belgique, ser. 2, vol. xxxix, p. 258, 
pi. —, figs. 1-5. 
1876. Thinnfeldia crassinervis Geinitz, Palceontogr., Suppl. iii, Lief, ii, p. 4, pi. 1, figs. 10-16. 
1878-79. Thinnfeldia (Pecopteris) odontopteroides Feistmantel, Palceontogr., Suppl. iii, Lief, iii, 
pp. 80, 169, pi. ix-xi; pi. xiii, fig. 5; pi. xiv, fig. 5 ; pi. xv, figs. 3-7 ; pi. xvi, fig. 1. 
1881. Thinnfeldia cf. odontopteroides Feistmantel, Foss. Flora Gondw. Syst. (Pal. Indica), 
vol. iii, pt. 3, p. 85, pi. xxiii a, figs. 7-9. 
1885. Thinnfeldia odontopteroides Curran, Proc. Linn. Soc. N.S. Wales, vol. ix for 1884, 
p. 252, pi. ix, fig. 4. 
1888. Pecopteris (Thinnfeldia) odontopteroides Johnston, Geol. Tasmania, pi. xxv, figs, 1, 2, 4. 
1888. Thinnfeldia odontopteroides Szajnocha, Sitzungsb. k. Akad. Wissen. Wien (Math.-Nat. Cl.), 
vol. xcvii, pt. 1, p. 228, pi. 1, figs. 1-3, 4 a. 
1890. Thinnfeldia odontopteroides Feistmantel, Mem. Geol. Surv. N.S. Wales, Pal. No. 3, 
p. 101, pi. xxiii-xxv; pi. xxvi, figs. 1, 2; pi. xxviii, fig. 8; pi. xxix, figs. 1-5. 
1892. Thinnfeldia odontopteroidrs Jack and Etheridge, Geol. & Palceont. Queensland, p. 368, 
pi. xvii, fig. 1. 
1898. Thinnfeldia odontopteroides var. normalis, Shirley, Bull. 7, Geol. Surv. Queensland, 
p. 21, p!. xi. 
1902. Thinnfeldia odontopteroides Etheridge, in Brown, Contrib. 12 & 13, Pal. South Aus¬ 
tralia, p. 2, pi. i. 
1902. Thinnfeldia odontopteroides Shirley, Bull. 18, Geol. Surv. Queensland, p. 11. 
1902. Thinnfeldia odontopteroides Arber, Quart. Journ. Geol. Soc., vol. lviii, p. 2. 
1903. Thinnfeldia odontopteroides Seward, Ann. S. African Mus., vol. iv. pt. 1, p. 52, 
pi. vii, figs. 1, 7, 8, 8a ; pi. viii, figs. 7, 8 ; pi. ix, figs. 7, 8 ; pi. xi, fig. 2. 
1908. Thinnfeldia odontopteroides Seward, Quart. Journ. Geol. Soc., vol. lxiv, p. 92, pi. iv, 
fig. 1 ; pi. v, fig. 1 ; and text-figs. 3, 4. 
1909. Thinnfeldia odontopteroides Dun, Rec. Geol. Surv. N.S. Wales, vol. viii, pt. iv, p. 315, 
pi. xlix, figs. 1, 2. 
1912. Dicroidium, odontopteroides Gothan, Abhandl. naturliist. Gesellsch. Niirnberg, vol. xix, 
pt. iii, p. 78, pi. 15, fig. 4; pi. xvi, fig. 5. 
1912. Dicroidium odontopteroides Gothan, ibid., vol. xix, pt. iv. 
1914. Dicroidium odontopteroides Antevs, K. svenska Vet.-Akad. Handl., vol. li, No. 6, p. 55, 
pi. ii, figs. 2, 3 ; pi. iv, figs. 6, 7. 
Diagnosis. —Fronds pinnate, frequently bifurcating into two equal approximated 
pinnae. Rachis stout. Pinnules crowded, thick, very variable in form and in size, 
either broadly semicircular, deltoid, or oval, confluent at the base ; nerves all arising 
directly from the rachis, and spreading throughout the lamina with dichotomy, or a 
more or less well-marked median nerve may be present, giving off forked lateral nerves 
at an acute angle. 
