Fossil woods from the Tipam sandstones near Hailakandi, Assam

Abstract

Fossil woods resembling those of Diospyros-Maba and Anisoptera are described here from Tipam sandstones near the town of Hailakandi district Cachar, Assam. These woods are noteworthy owing to their fine structural preservation and from the standpoint of their palaeogeographical distribution. Although Diospyros-Maba is presently found in the region of Assam, no Anisoptera now grows in India proper.

Fossil woods of Anacardiaceae from the Tertiary of West Bengal, India

“…The fossil wood and the wood of M. indica are identical in shape, size and distributional pattern of the vessels, in the nature of intervascular pitting, parenchyma distribution and in the fibre and ray structure. These are Anacardioxylon mangiferoides Ramanujam (1960), Mangiferoxylon scleroticum Awasthi (1966), and M. assamicum Prakash & Tripathi (1970a).…”

Occurance of some dipterocarpaceous woods in the cuddalore series of South India

“…Therefore, he transferred it to the genus Gllttoxylon Chowdhury. Earlier, Den Berger (1927) Recently Prakash and Tripathi (1970) transferred Anisoptera type of fossil wood described bv Chowdhury (1938) as Dipterocarpoxylo"n garoense to Anisopteroxylon Ghosh and Kazmi, and named it Anisopteroxylon garoeflse (Chowdhury). The following is a upto date list of the species referred to Dipterocarpoxylon described from India and abroad.…”

Some new fossil woods from the Cuddalore Sandstone of south India

“…Felix (1882) instituted the genus Ebenoxylon for the fossil woods resembling Diospyros. To date the following 15 species of it are known from various parts of the world: Ebenoxylon aegypticum Kräusel (1939) and E. ebenoides Kräusel (1939) from the Tertiary of Libya, E. indicum Ghosh & Kazmi (1958) from the late Miocene-Pliocene of Arunachal Pradesh, E. arcotense Awasthi (1970Awasthi ( , 1984 from the late Miocene-Pliocene of Puducherry, E. kartikcherraense Prakash & Tripathi (1970) from the Tipam Sandstone (late Miocene) of Assam, E. mohgaoense Chitaley & Patil (1972) and E. deccanensis Trivedi & Srivastava (1982) from the Deccan Intertrappean beds of central India, E. bavaricum Selmeier (1976) from the Miocene of Bavaria, E. miocenicum Prakash (1978), E. siwalicus Prakash (1981), E. kalagarhensis Prasad (1989) and E. palaeocalendula Prasad (1993) from the Siwalik of Uttarakhand, E. obliquiporosum Awasthi & Ahuja (1982) from the late Miocene-Pliocene of Kerala, E. burmense Du (1988) from the Pliocene of Myanmar and E. neyveliensis Mukherjee & Prasad (2013) from the late Miocene-Pliocene Neyveli lignite deposits of Tamil Nadu. Many of these are based on minor characters (possibly due to intraspecific variations) and difficult to be differentiated.…”