790 SYSTEMATIC PALEONTOLOGY 



Sequoia reichenbachi Berry, 1906, Bull. Torrey Bot. Club, vol. xxxiii, 1906, 



p. 165. 



Sequoia reichenbachi Berry, 1906, Rept. State Geol. (N. J.), for 1905, p. 139. 

 Sequoia reichenbachi Hollick, 1906, Mon. U. S. Geol. Survey, vol. 1, p. 42, 



pi. ii, fig. 40; pi. iii, figs. 4, 5. 



Sequoia reichenbachi Berry, 1910, Bull. Torrey Club, vol. xxxvii, p. 20. 

 Sequoia reichenbachi Berry, 1911, Bull. 3, Geol. Survey of New Jersey, p. 93. 

 Sequoia reichenbachi Berry, 1911, Md. Geol. Surv., Lower Cretaceous, p. 



444, pi. Ixxvii, fig. 7. 

 Sequoia reichenbachi Berry, 1914, Prof. Paper U. S. Geol. Survey, No. 84. 



pp. 23, 107, pi. iv, figs. 1-4. 



Description. " S. ramis elongatis, foliis decurrentibus, patentibus, 

 falcato-incurvis, rigidis, acuiriinatis." Heer, 1869. 



This is one of the most wide-ranging fossil plants, both geologically and 

 geographically, that is known, and it seems very probable that is is of a 

 composite character, the well-known difficulty in distinguishing between 

 coniferous twigs of this character prohibiting any satisfactory segregation. 

 Described originally as a species of Araucarites, certain of these remains 

 from the Staten Island Cretaceous have shown by their vascular structure 

 that they are related to the Araucariece, while on the other hand a large 

 number of exactly similar remains of leaf-bearing twigs bore cones which 

 are unquestionably those of Sequoia. Twigs of this sort are abundant 

 throughout the Potomac group, occurring also in the Fuson formation of 

 the Black Hills, the Kootenai of Montana, the Shasta of California, the 

 Kome beds of Greenland, and the Neocomian of Central Mexico. Abroad 

 they have been reported from the Upper Jurassic (?) of Portugal, the 

 Neocomian of Belgium, the Barremian of Silesia, and the Albian of 

 Switzerland. 



As might be expected from their great range, fossils of the Sequoia 

 reichenbachi type are of slight stratigraphic value, nevertheless the 

 remains are very abundant from New Jersey to Alabama at the Magothy- 

 Black Creek-Middendorf-Tuscaloosa-Eutaw horizons, apparently identical 

 in character and frequently cone-bearing, the cones being small, prolate 

 spheroids in shape, and consisting of relatively few, peltate, umbilicate, 

 Sequoia-like scales. Sequoia twigs are very resistant to maceration, and 

 frequently are about the last vegetable remains to disintegrate in marine 

 waters. This species is rare in the Earitan formation of New Jersey and 

 is unknown in the Maryland Earitan. It is common at later Upper Cre- 



