XLV] DAMMARITES 247 



Podozamites lanceolatus the term Desmiophyllum would be a more 

 appropriate generic designation, the name Dammarites being 

 adopted for broader foims. This distinction is purely arbitrary 

 and it must be admitted that there is no substantial justification 

 for the use of a generic name implying affinity with Agathis. 

 Unless there are adequate grounds for assuming generic identity 

 of detached Tertiary and Cretaceous leaves with Podozamites it 

 is inadvisable to make use of that designation. As Schenk 1 points 

 out Velenovsky's Tertiary species Podozamites miocenicus may be 

 a leaf of Agathis or possibly a Podocarpus. 



Dammarites Bayeri Zeiller. 



This name was given to some oval-lanceolate leaves from Upper 

 Cretaceous beds in Bulgaria varying in length from 10 to 12 cm. 

 and from 15 to 30 mm. broad agreeing closely with Heer's Podo- 

 zamites marginatus from the Cenomanian of Greenland but wisely 

 excluded by Zeiller 2 from that genus, though on grounds which 

 are no longer cogent if the interpretation of Podozamites impressions 

 as shoots and not pinnate leaves is accepted. 



Ettingshausen 3 records two species of Dammarites from 

 Tertiary rocks in New Zealand: Dammarites Oweni includes in 

 addition to leaves a cone-scale, the impression of a cone, and some 

 petrified wood of the Araucarian type. There is no proof that 

 these disjuncta membra belong to the same plant though it is not 

 improbable that they are parts of a Conifer closely allied to 

 Agathis. Ettingshausen's second species D. univervis is founded 

 on a leaf and a supposed cone-scale of doubtful value. 



The data furnished by leaves alone are of little value. In 

 addition to the cone described from New Zealand by Ettingshausen 

 other examples are recorded as species of Dammarites but without 

 any satisfactory evidence of affinity to the recent genus, e.g., 

 Dammarites albens Presl. 4 from the Quadersandstein of Bohemia 

 and D. crassipes Goepp. 5 These two species are united by 



1 Schimper and Schenk (90) A. p. 279. 



2 Zeiller (05 2 ) p. 17, PL vn. figs. 811. 



3 Ettingshausen (87) p. 15, PL i. figs. 2024. 



4 Sternberg (38) A. PL LII. ; Corda in Reuss (46) B. PL XLVIII. ; Goeppert (50) 

 p. 237 ; Schimper and Schenk (90) A. p. 279, fig. 292 b 



5 Goeppert (50) PL XLV. fig. 6; Corda in Reuss (46) B. 



