Arizona Ecological Services
Southwest Region
"Conserving the Nature of America"

Flat-tailed Horned Lizard

Scientific Name:
Phrynosoma mcallii
Image of a Flat-tailed horned lizard
Office Lead:
Cat Crawford
Click here for a generalized species location map
Click on the Cactus to View the Document Title Author(s) Year File Size/Source
Link to the General Species Information
 General Species Information Arizona Ecological Services Field Office May 2011 17 Kb
Withdrawal of Proposed Rule to List the Flat-Tailed Horned Lizard as Threatened
 Endangered and Threatened Wildlife and Plants; Withdrawal of Proposed Rule to List the Flat-Tailed Horned Lizard as Threatened (76 FR 14210) Carlsbad Fish and Wildlife Office March 15, 2011 530 Kb
News Release: Flat-Tailed Horned Lizard Does Not Need Endangered Species Act Protection
 News Release: Flat-Tailed Horned Lizard Does Not Need Endangered Species Act Protection U.S. Fish and Widllife Service March 14, 2011 153 Kb
Court Reinstates 1993 Proposed Listing of the Flat-Tailed Horned Lizard
 Listing the Flat-Tailed Horned Lizard as Threatened - Federal Register U.S. Fish and Widllife Service March 2, 2010 56 Kb
Court Reinstates 1993 Proposed Listing of the Flat-Tailed Horned Lizard
 Comment Period Reopened on Reinstatement of 1993 Proposed Rule to List the Flat-Tailed Horned Lizard as Threatened -- Hearings Scheduled in California and Arizona U.S. Fish and Widllife Service March 1, 2010 59 Kb
Court Reinstates 1993 Proposed Listing of the Flat-Tailed Horned Lizard
 Court Reinstates 1993 Proposed Listing of the Flat-Tailed Horned Lizard - News Release U.S. Fish and Widllife Service November 20, 2009 56 Kb
News Release: Fish and Wildlife Service Reaffirms Previous Decision Not to List Flat-Tailed Horned Lizard Under the ESA
 News Release: Fish and Wildlife Service Reaffirms Previous Decision Not to List Flat-Tailed Horned Lizard Under the ESA U.S. Fish and Wildlife Service June 28, 2006 56 Kb
Withdrawal of the Proposed Rule to List the Flat-Tailed Horned Lizard as Threatened: Federal Register
 Withdrawal of the Proposed Rule to List the Flat-Tailed Horned Lizard as Threatened: Federal Register U.S. Fish and Wildlife Service June 28, 2006 78 Kb
News Release: Fish and Wildlife Service Reopens Public Comment Period on Proposed Listing of Flat-tailed Horned Lizard
 News Release: Fish and Wildlife Service Reopens Public Comment Period on Proposed Listing of Flat-tailed Horned Lizard U.S. Fish and Wildlife Service April 21, 2006 60 Kb
Reopening of Comment Period for Reinstated Proposed Rule to List the Flat-Tailed Horned Lizard as Threatened -- Federal Register
 Reopening of Comment Period for Reinstated Proposed Rule to List the Flat-Tailed Horned Lizard as Threatened -- Federal Register U.S. Fish and Wildlife Service April 21, 2006 55 Kb
Reinstated Proposed Rule to List the Flat-tailed Horned Lizard as Threatened -- Federal Register
 Reinstated Proposed Rule to List the Flat-tailed Horned Lizard as Threatened -- Federal Register US Fish and Wildlife Service March 2, 2006 48 Kb
News Release: Fish and Wildlife Service Opens Public Comment Period on Proposed Listing of Flat-Tailed Horned Lizard
 News Release: Fish and Wildlife Service Opens Public Comment Period on Proposed Listing of Flat-Tailed Horned Lizard US Fish and Wildlife Service March 2, 2006 141 Kb
Fish and Wildlife Service Reinstates Proposal to Protect Desert Reptile
 Fish and Wildlife Service Reinstates Proposal to Protect Desert Reptile US Fish and Wildlife Service December 7, 2005 58 KB
Notice of Reinstatment of the 1993 Proposed Rule to List the Flat-Tailed Horned Lizard as a Threatened Species, Federal Register
 Notice of Reinstatment of the 1993 Proposed Rule to List the Flat-Tailed Horned Lizard as a Threatened Species, Federal Register US Fish and Wildlife Service December 7, 2005 49 Kb
Indirect Effects of Development on hte Flat-tailed Horned Lizard
 Indirect Effects of Development on the Flat-tailed Horned Lizard Kevin V. Young and April T. Young February 2005 533 Kb
Annual Progress Report: Implementation of the Flat-tailed Horned Lizard Rangewide Management Strategy - January 1, 2010 - December 31, 2010
 Annual Progress Report: Implementation of the Flat-tailed Horned Lizard Rangewide Management Strategy - January 1, 2010 - December 31, 2010 Flat-tailed Horned Lizard Interagency Coordinating Committee July 2011 567Kb
Annual Progress Report: Implementation of the Flat-tailed Horned Lizard Rangewide Management Strategy - January 1, 2009 - December 31, 2009
 Annual Progress Report: Implementation of the Flat-tailed Horned Lizard Rangewide Management Strategy - January 1, 2009 - December 31, 2009 Flat-tailed Horned Lizard Interagency Coordinating Committee November 2010 311 Kb
Link to the Annual Progress Report: Implementation of the Flat-tailed Horned Lizard Rangewide Management Strategy - January 1, 2008 - December 31, 2008
 Annual Progress Report: Implementation of the Flat-tailed Horned Lizard Rangewide Management Strategy - January 1, 2008 - December 31, 2008 Flat-tailed Horned Lizard Interagency Coordinating Committee March 2009 338 Kb
Link to the Annual Progress Report: Implementation of the Flat-tailed Horned Lizard Rangewide Management Strategy - January 1, 2007 - December 31, 2007
Annual Progress Report: Implementation of the Flat-tailed Horned Lizard Rangewide Management Strategy - January 1, 2007 - December 31, 2007 Flat-tailed Horned Lizard Interagency Coordinating Committee March 2008 210 Kb
Annual Progress Report: Implementation of the Flat-tailed Horned Lizard Rangewide Management Strategy - January 1, 2006 - December 31, 2006
 Annual Progress Report: Implementation of the Flat-tailed Horned Lizard Rangewide Management Strategy - January 1, 2006 - December 31, 2006 Flat-tailed Horned Lizard Interagency Coordinating Committee March 2007 315 Kb
Annual Progress Report: Implementaiton of the Flat-tailed Horned Lizard Rangewide Management Strategy
 Annual Progress Report: Implementation of the Flat-tailed Horned Lizard Rangewide Management Strategy - January 1, 2005 - December 31, 2005 Flat-tailed Horned Lizard Interagency Coordinating Committee March 2006 1.8 Mb
Flat-tailed Horned Lizard Rangewide Management Strategy, 2003 Revision
 Flat-tailed Horned Lizard Rangewide Management Strategy, 2003 Revision Flat-tailed Horned Lizard Interagency Coordinating Committee May 2003 1.6 Mb
Link to the Flat-tailed Horned Lizard Rangewide Management Strategy (Note - Document does not contain figures)
 Flat-tailed Horned Lizard Rangewide Management Strategy (Note - Document does not contain figures) Working Group of Flat-tailed Horned Lizard Interagency Coordinating Committee May 1997 347 Kb
Link to the Summary of Management Actions for the Flat-Tailed Horned Lizard
 Summary of Management Actions for the Flat-Tailed Horned Lizard Arizona Ecological Services Field Office March 2003 35 KB
Link to the News Release: Fish and Wildlife Service Concludes Flat-tailed Horned Lizard Not Threatened with Extinction
 News Release: Fish and Wildlife Service Concludes Flat-tailed Horned Lizard Not Threatened with Extinction U.S. Fish and Wildlife Service January 2003 107 Kb
Link to the Withdrawal of the Proposed Rule to List the Flat-Tailed Horned Lizard as Threatened
 Withdrawal of the Proposed Rule to List the Flat-Tailed Horned Lizard as Threatened U.S. Fish and Wildlife Service January 2003 109 KB
Link to the Endangered and Threatened Wildlife and Plants; Listing of the Flat-Tailed Horned Lizard as Threatened (Reopening of comment period and public hearing announcement (67 FR 37752)
 Endangered and Threatened Wildlife and Plants; Listing of the Flat-Tailed Horned Lizard as Threatened (Reopening of comment period and public hearing announcement (67 FR 37752) US Fish and Wildlife Service May 30, 2002 39 KB
Link to the News Release: Service Reopens Comment Period on its Proposal to List the Flat-tailed Horned Lizard as Threatened
 News Release:  Service Reopens Comment Period on its Proposal to List the Flat-tailed Horned Lizard as Threatened US Fish and Wildlife Service May 30, 2002 113 KB
Link to the Endangered and Threatened Wildlife and Plants, Notice of Reinstatement of the 1993 Proposed Listing of the Flat-tailed Horned Lizard as a Threatened Species and the Reopening fo The Comment Period on The Proposed Rule (66 FR 66384)
 Endangered and Threatened Wildlife and Plants, Notice of Reinstatement of the 1993 Proposed Listing of the Flat-tailed Horned Lizard as a Threatened Species and the Reopening of The Comment Period on The Proposed Rule (66 FR 66384) US Fish and Wildlife Service December 26, 2001 37 KB
Link to the Endangered and Threatened Wildlife and Plants: Withdrawal of the Proposed Rule to List the Flat-Tailed Horned Lizard as Threatened
 Endangered and Threatened Wildlife and Plants: Withdrawal of the Proposed Rule to List the Flat-Tailed Horned Lizard as Threatened US Fish and Wildlife Service July 1997 48 kb
Link to the Endangered and Threatened Wildlife and Plants; Proposed Rule To List the Flat-tailed Horned Lizard as Threatened
 Endangered and Threatened Wildlife and Plants; Proposed Rule To List the Flat-tailed Horned Lizard as Threatened US Fish and Wildlife Service November 29, 1993 2.7 MB

Last updated: March 13, 2013
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