Crossword-Solution: FLUVIATILE 10 letters, 1 clue 🏆 scrabble score: 16

They dig somewhat after the manner of the fluviatile long-tailed decapod crustaceans, of the genera Thoracostraca, the common crawfish, you know.

Yet who can doubt that, whenever a sufficiently extensive series of lacustrine and fluviatile beds of that age becomes known, the lineage which has been traced thus far will be continued by equine quadrupeds with an increasing number of digits, until the horse type merges in the five-toed form towards which these gradations point? But the argument which holds good for the horse, holds good, not only for all mammals, but for the whole animal world.

Hence, as might be expected, fluviatile and marine shells are common in the alluvial deposit; and Loftus found strata, containing subfossil marine shells of species now living, in the Persian Gulf, at Warka, two hundred miles in a straight line from the shore of the delta.

For example, there are no sea-urchins, no corals, no chambered shells, such as the nautilus, nor microscopic Foraminifera in lacustrine or fluviatile deposits.

But, as a general rule, the fluviatile species are smaller, smoother, and more globular than the marine; and they have never, like the _Neritæ,_ the inner margin of the outer lip toothed or crenulated.