Corriedale wool ranging from 25 to 30 microns diameter. Fleece from a mature ewe will weigh with a staple length of . After cleaning, a yield of 50 to 60% of the raw fleece weight is common. Mature rams will weigh ; ewes can weigh from . This breed was developed in Australia and New Zealand by extensive breeding and culling as a cross between Merino and Lincoln sheep The goal was to develop a breed that would thrive in lower rainfall areas and supply long-staple wool. James Little was the original breeder. The name comes from a property in the
Breed registry Australia, winning horses of stock-type breeding receive points for conformation, which are attested to by the judges and recorded in an owner's special book. The points are accumulated to eventually result in a Registry on Merit. Registry on Merit is prevalent with sheepdog registries, in particular those of the Border Collie, and some other breeds with a heavy emphasis on working ability. In this type of ROM, the dog's conformation and ancestry generally does not matter. Breed registries usually issue certificates for each recorded animal, called a "pedigree", "pedigreed animal documentation", or most commonly, an animal's "papers". Registration papers may