FROM THE SECONDARY ROCKS OF BRITAIN. <-7! 



*• 



In 1847, T?. Braun recorded the discovery of five species of Cycadean si ins from tli 

 Keuper of Culmbach, in Bavaria, but did not publish any description <>f them 1 . 



M. Coemans found the stem of a Cycad in the remarkable gymnospermaUms lion of 

 Hainault, of Cretaceous age, which he figured and described in 1866*. 



In India, stems of Cycadea have been found in the Bajmahal series, Rajmahal Sills, 

 Bengal, several of which have been figured by Oldham and Morris 3 . Dana 4 record 

 the discovery by P. T. Tyson of large stumps of Cyeads, in beds believed to be Upper 

 Jurassic, near Baltimore, Maryland. One of the specimens is 12 inch. - in diauMtn 

 and 15 inches high. Emmons has found stems in the Triassic rocks of North Carolina 



Classified enumerations of the species have been given in the scientific works and 

 memoirs of S. Woodward 6 , Morris 7 , Presl 8 , Goppert 9 , Miqnel 10 , and linger". 



Synopsis Generum Cycadacearum Fossilium e Truncis notorum. 



Tribus I. Cvcado, Alph. DC. Prodr. vol. xvi. Sect. ii. p. 525. 



Spadices masculi in strobiles dispositi, cuneati, subtus polliuigeri , feminci magai fohace, 

 utrinque ovula plura erecta gerentes. 



1. 1. Bucklandia, Presl. Truncus cylindrical 

 spadicum, squamarum petiolorumque 



magnis obliquis snbrhomboideis angiilis lateralis truncal. 



Cu 



Mantellii 



Wealden 



Sp. s'. B. squamosa, Brongn.; cicatricibus ignotis, squamis triangulate 



hoc 



Milleriana 



S "cibus parvis obUquis subrbo-nboidc,, a„gul,s laterabbn. sab,, 



catis. 



Form. Middle Oolite, hoc. Brora, Sutherlandshire. 



Tribus II. Zamie m. ,. . • ve ] pel tat i 



Saadics in strobilos dispositi, masculi imbricato-cneati »^JTT"'« la r, 



pelt 



Spadices in strobilos 

 pollinigeri ; feminei stipitati, peltati v. imbricati, ovulis X ropr. 



dispositis reflexis. 

 Gen. 2. Yatesia, gen. nov. Truncns cylindriens indivisus v 



\)Vt 



rum basibus persistentibus obtectus. 



1 Regensburg Flora (184 



Flora of the Kaimahal Hills (1862) 



ique, vol. xxxvi. Mem..>i« 

 «ieology(1863).p. 47*. 

 h Organic Remains (1830) 



« ^ Synoptical x au« - 



American Geol. pt. vi. (1857) p. 123. r^ue of British Fowls, pp. 1 -° 



T Ann. & Mag. of Nat. Hist, (1841), vol. vn. p. 110 J "*« * 



' Sternberg, Flora der Vorwelt (1838), pp. 194-196. 



, .__ r „ ., • . L„„-ii~t, t ™t.orl. Kultur (1844), p. •*- N 



Schlesischen 



10 



rum (1842) 



P- 205 ; Prodromus Syst. Cycad. (1861), pp. 29-34. ^ 



11 Genera et Species Plantarum Fossilium (1850), pp. -' - 





