Nimravides the similarities between them at first glance, based on autapomorphies in the skeleton, the two animals are too different to be classified as species of the same genus, and thus, "Nimravides" remains separate as its own genus within the Homotherini. Nimravides Nimravides is a genus of extinct saber-toothed cats that lived in North America during the middle and late Miocene, between 13.6 and 4.9 Ma. Despite its scientific name, "Nimravides" does not belong to the Nimravidae, but is a true cat, belonging to the family Felidae. "Nimravides catacopsis", one of the largest and latest species, was quite large, measuring at
Fund for the Replacement of Animals in Medical Experiments World Animal Protection). The following year, Michael Balls became one of the founder members of the Animals Procedures Committee. 1989 - INVITTOX, a collection of protocols for in vitro methods in toxicology, was established. This database is now part of ECVAM's Scientific Information Service. 1991 - The FRAME Alternatives Laboratory (FAL) opened to conduct research into alternatives. 1995 - The FRAME office relocated to the newly built Russell & Burch House, Nottingham. 1998 - FRAME became a founder member of Focus on Alternatives. This body promotes dialogue between all UK groups that focus on replacement alternatives. 1999 - Bill Russell