The phrase "a very restricted range" is correct and usable in written English.
It can be used to describe a limited selection or scope of options, choices, or variations in a particular context.
Example: "The product line offers a very restricted range of colors, making it difficult for customers to find their preferred shade."
Alternatives: "a narrow range" or "a limited selection".
Due to overfishing it is now Critically Endangered with a very restricted range – however, on certain beaches in Orkney, you'll be tripping over their eggcases.
It has a very restricted range in northeastern Madagascar, where it is known locally as the simpona.
For example, Telfair's skinks (Fig. 3) were once found across Mauritius but now have a very restricted range.
In addition, S. macrophylla has a very restricted range in the dry forests of southern Bahia, well isolated from known populations of S. speciosa (Thomas 2007; Araujo and Chautems 2010).
They've also got a very restricted range, which is ever decreasing, due to encroachment on their habitat by the Chinese population.
Wright offers a very restricted range of experience -- all extremes, all the time -- and a restricted style to match; within it, though, he can discover a spiritual yearning, and a visceral power, which few poets now working can match.
However, this jirga had a very restricted scope.
Pollution and predation led to the extinction of both species of vendace from its very restricted range in south-western Scottish freshwaters in 1980.
Very little is known about this snail in general, because of its minute size, its very restricted range, and the fact that the places where it currently lives are on private property which allows no access.
The northern portion of the study area in the Peruvian department of Amazonas (Cordillera de Colán and Alto Mayo) is highly irreplaceable for plants, amphibians, and birds but was not identified as an endemic area by the simple overlay of species ranges; this emphasizes the large number of very restricted range species that occur there.
Indeed, a global analysis of Upper Guinean endemic forest species gives a pattern in which relatively widespread endemics are ruderal while species with very restricted ranges are linked to particularly humid places, i.e., probably refugia [47].
