Sigillaroid

alternative sigillaroid · alternative Sigillarioid · alternative sigillarioid

1. not comparableOf, pertaining to, or having characteristics of the genus Sigillaria of extinct trees.

   In the latter plant, now well known to be a Sigillaroid root, we find no inner or medullary cylinder of vessels.

   1873, Philosophical Transactions of the Royal Society of London, volume 162, page 227

   3 more examples

   On microscopic examination, this mineral charcoal displays elongated wood-cells, some of them with the pores or discs in several rows, as in many Sigillaroid trees.

   1860, J. W. Dawson, On a Terrestrial Mollusk, a Chilognathous Myriapod, and fome New Species of Reptiles, from the Coal-Formation of Nova Scotia: Proceedings of the Geographical Society: The Quarterly Journal of the Geological Society of London, page 269

   It is, however, possible that this older forest, represented by coaly stumps, may have consisted of Sigillaroid trees.

   1868, John William Dawson, Acadian Geology, page 191

   Further, in the underclays it is quite a common thing to find a mass of clay literally crammed with ribbon-shaped markings of the roots of Sigillaroid plants.

   1907, Gas Journal, volumes 97-98, page 345

   Synonyms: Sigillarian, sigillarian