It buckled, and strata—Time-sectors—were thrust up to mingle with others.
Gazing on the strata of the earth, he reads the fate of his species.
The strata of sand with oyster-shells, and particularly a thick stratum of chalk, is found near Reading.
No fossils have been found in these strata and their age is uncertain.
No remains of plants have been found in Cambrian strata, except some doubtful markings, as of seaweed.
These strata are shewn in the diagram given at the head of this chapter.
Both of these strata eventually become the epiblast, of which they form the epidermic and nervous layers.
Many of these strata are full of such exuviae—the so-called "fossils."
And now, what will be the character of these strata, old and new?
To identify these strata, it is necessary to call them by name.
"horizontal layer," 1590s, from Modern Latin stratum, special use of Latin stratum "thing spread out, coverlet, pavement," from neuter past participle of sternere "to spread out, lay down, stretch out," from PIE *stre-to- "to stretch, extend," from root *stere- "to spread, extend, stretch out" (see structure (n.)).
stratum stra·tum (strā'təm, strāt'əm)
n. pl. stra·tums or stra·ta (-tə)
A horizontal layer of material, especially one of several parallel layers arranged one on top of another.
Any of the layers of differentiated tissue forming an anatomical structure.