XVUl ISTBODUCTION. 



Westphalia. — This district, rich in fossil plants, has Cre- 

 taceous Floras of several successive horizons. 



Eocmer (18il) referred to the Cretaceous plants, but the 

 earliest work of auy note is W. von der Marok's monograph in 

 the ' Palseontographica,' vol. xi. (1864), in which he described a 

 number of species from the Plattenkalk. Saporta (1867) made 

 Haldem a classical locality ; and Hosius (1870) dealt with the 

 more geological aspact of the bods of Cretaceous age in several 

 localities. Hosius (1870 a) also described and figured a number 

 of Dicotyledonous leaf-impressions from these deposits. Hosius 

 and von der Marck (1830 &, 1885) fiually gave full and excellent 

 accounts of the Upper aud Lower Cretaceous plants of West- 

 phalia, with good descriptions and figures, noticing a number 

 of localities. 



SiLE3i\. — The Quadersandstein (Upper Cretaceous) of Silesia 

 was described b}' Goeppert in 1842 a and 1847. He illustrated 

 and named plants from Eieslingswalde, Bunzlau, and elsewhere. 

 Eoemer (1889) also published an account of Senonian leaf- 

 impressions from Bunzlau. 



SaXont. — The well-known fossil plants from the Cenomanian 

 of Niederschoena have been described By several authors. They 

 are often mentioned by Sternberg, ' Flora der Vorwelt ' (1820- 

 1838), some of them were noticed by Cotta (1836), and 

 numerous plant'iniptessions were well described and illustrated 

 by Geinitz (1842). The first really important work on this 

 Flora, however, was that by Ettingshausen (1867 a), who dealt 

 with dicotyledonous leaf-impressions ; and his researches were 

 followed by those of Eugelhardt (1892 a). 



The neighbourhoods of Dippoldiswalde and Dresden are also 

 known for Cretaceous plant-bearing deposits, and here Glocker 

 (1341) discovered his so-caWei Gyrophyllites. OttoinhisAddita- 

 menta (1852 & 1854) enumerated and gave an account of the 

 Quader plants of this region. Geinitz (1875 a) also published 

 a paper on the plants of the Lower Uuader, with a second part 

 on those of the Middle and Upper Quader of Saxony. 



HOLLAND. 



The Cretaceous plants of Holland are all impressions, and are 

 similar to those of Aix. Debey (1851) studied the specimens 

 from Maestricht; and Miquel (1863) published a monograph on 



