spinules

_P. platessa_, the Plaice: scales small, mostly without spinules, reduced and not imbricated, imbedded in the skin; bony knobs on the head behind the eyes, red spots on the upper side.

Hormones and Heredity J. T. Cunningham 1897

_P. limanda_, the Dab: scales uniform all over the body, with spinules on the projecting edges, making the skin rough; lateral line with a semicircular curve above the pectoral fin.

Hormones and Heredity J. T. Cunningham 1897

I have shown that the spinules develop in the mature males not as a modification of the scale, but as separate calcareous deposits the bases of which afterwards become united to the scale.

Hormones and Heredity J. T. Cunningham 1897

The Dab, which occurs in the same waters as the Plaice, has the spines more spinulated than any of the forms of plaice above mentioned, therefore the absence or slight development of spinules in the typical Plaice is not explained by physical conditions alone.

Hormones and Heredity J. T. Cunningham 1897

The mandible is about one-third as broad as long, armed with three sharp teeth on the outer edge, and with a broad cutting edge within, and still further inwards a lot of straggling spinules.

Our Common Insects A Popular Account of the Insects of Our Fields, Forests, Gardens and Houses 1872

"The nest was constructed of dry grass, moss, and rootlets, and the green spinules of the fir were worked into it, fixing it most firmly in its place in the crown of the pine where it was much forked."

The Nests and Eggs of Indian Birds, Volume 1 Allan Octavian Hume 1870

In some species there is a scattering of epidermal spinules on the body, and the scales (when present) are conical, hollow, and translucent.

Mitchieville 2008