was a thoroughbred racehorse and sire in Great Britain and Germany.
[2] Glaucus produced two classic winners, both fillies (Pic-Nic and Refraction), both born in 1842.
Glaucus was sent to Germany to continue stud duty, but was not as successful.
[1] * Glaucus is inbred 3S x 4D to the stallion Sir Peter Teazle, meaning that he appears third generation on the sire side of his pedigree and fourth generation on the dam side of his pedigree.
^ Glaucus is inbred 4S x 4S x 5D x 5D x 5D to the stallion Highflyer, meaning that he appears fourth generation twice on the sire side of his pedigree and fifth generation thrice (via Sir Peter Teazle, Highflyer mare, and Skyscraper Sister to Highflyer) on the dam side of his pedigree.