Action timeline

October 30, 2003 – The Center filed a lawsuit challenging the U.S. Fish and Wildlife Service’s 2001 withdrawal of its proposal to list the flat-tailed horned lizard under the Endangered Species Act.

2005 – A federal court ruled that the withdrawal of the proposed rule violated the Endangered Species Act; the Fish and Wildlife Service was ordered to restore the proposed listing.

2006 – The Fish and Wildlife Service again withdrew the proposed listing, and the Center challenged that decision in court.

2007 – The withdrawal of the listing proposal was upheld, and the Center appealed that decision.