The following people are acknowledged for providing data:

Regular contributors of updates on new taxa:

Jakob Hallermann (University of Hamburg) and Barry Baker, U.S. National Fish & Wildlife Forensics Laboratory, Ashland, Oregon.

Taxonomy

Amphisbaenians	Rob Yeadon (South Africa)
Anomalepidae	Van Wallach (Cambridge, USA)
Chamaeleonidae	Petr Necas (Brno, Czech Republic), Nicolà Lutzmann (Zürich, Switzerland)
Cordylidae	Klaus Adolphs (St. Augustin, Germany)
Crocodylidae	Adam Britton (University of Bristol, UK)
Dibamidae	Jakob Hallermann (University of Hamburg, Germany)
Gekkonidae	Hermann Seufer (Keltern-Weiler, Germany), Herbert Rösler (Thale, Germany), Mirko Barts (Germany)
Gerrhosauridae	Klaus Adolphs (St. Augustin, Germany)
Hydrophiidae	Arne R. Rasmussen (Zoologisk Museum, Copenhagen), Vladimir Kharin
Iguanidae s.l.	Jim Schulte (Washington University, St. Louis)
Tropiduridae	Darrell Frost (American Museum of Natural History)
Lacertidae	Wolfgang Bischoff (ZFMK, Bonn, Germany), Werner Mayer (NHM Wien, Austria)
Leptotyphlopidae	Van Wallach (Cambridge, USA)
Liolaeminae	Richard Etheridge (San Diego State University, San Diego, USA)
Viperidae	Wolfgang Wüster (University of Wales, UK)
	Gernot Vogel (University of Heidelberg, Germany)
	Ulrich Joger (Hessisches Landesmuseum Darmstadt, Germany)
Typhlopidae	Van Wallach (Cambridge, USA)

Geography

Africa	Donald G. Broadley (Zimbabwe)
Australia	Jean Just (ABRS, Canberra/Australia)
Belize	Peter J. Stafford (Natural History Museum, London)
Bolivia	Lutz Dirksen (ZFMK, Bonn, Germany) and Ignacio de la Riva (Museo Nacional de Ciencias Naturales, Madrid)
Cameroon	Matthew LeBreton
Central African Republic	Ulrich Joger (Hessisches Landesmuseum Darmstadt, Germany)
Chile	Gilmar Ramirez (Chile)
Colombia	Fernando Castro (Universidad del Valle, Cali/Colombia)
Ecuador	Omar Torres-Carvajal (Washington DC)
Eritrea	Malcolm J. Largen (Liverpool, England)
Ethiopia	Malcolm J. Largen (Liverpool, England)
India	Indraneil Das (Universiti Malaysia, Sarawak), Ashok Captain
Indonesia	Ed Colijn (The Netherlands) and Walter Eisenhofer (Germany)
Israel	Yehudah L. Werner (Hebrew Univ., Jerusalem/Israel)
Italy	Edoardo Razzetti (Milano/Italy)
	Massimo Delfino (Italy)
Madagascar	Miguel Vences (TU Braunschweig) and Frank Glaw (ZSM, Germany)
Mali	Ulrich Joger (Hessisches Landesmuseum Darmstadt, Germany)
New Zealand	Gerard Lovell (New Zealand)
Pakistan	Muhammad Sharif Khan
Indochina	Peter Paul van Dijk (Chulalongkorn University, Thailand)
Solomon Islands	Michael McCoy (Australia)
Spain	Mirco Sole Kienle (Universität Tübingen)
(former) Soviet Union	Natalia Ananjeva and Roman Khalikov (St. Petersburg)
Sumatra	Gernot Vogel (University of Heidelberg, Germany)
USA	Joseph T. Collins (Center for North American Amphibians and Reptiles)
Turkey	Okan Cetin (Turkey)
Venezuela	Paul Kornacker
"Yugoslavia"	Irena Grbac (Croatian Natural History Museum)

Photography

Images on our Home Page were kindly provided by

• Ashok Captain (Python molurus, upper left corner)
• Peter Uetz (Chamaeleo ellioti, "lizard")
• Wolfgang Wüster (Boiga cyanea, "snake")
• Helen Gilks / Albert Aanensen/BBC NHU Picture Library / ARKive (Sphenodon punctatus, "tuatara")
• Laurie J. Vitt (Caiman crocodilus, "crocodile")
• Laurie J. Vitt (Amphisbaena alba, "amphisbaenian")
• Laurie J. Vitt (Gopherus polyphemus, "turtle")

Other photos that are part of the database have been provided by the photographers that are named on the pictures (who still retain copyright). Among the most important are Ingo Kober, David Hegner, Indraneil Das, Arie van der Meijden, Axel Kwet, Ashok Captain, Ulrich Manthey, John C. Murphy and Wayne Van Devender (in no particular order).

Contributors of information on single species/genera or other bits and pieces:

A: Ishan Agarwal, Fabian Aguirre, Erik Ahlander (Holaspis), Alejandro Arteaga (photos), Sudhanva Atri, Mark Auliya, Christopher Austin (Skinks, Pacific species), Luciano Javier Avila (Liolaemus)

B: Raoul Bain (Laos, Vietnam), Breck Bartholomew (Herplit), Pietro Battiston (Venezuela), Aaron Bauer (reprints, geckoes), Lucas Bauer, Marcos di Bernardo, Matthew Bettelheim, Kedar Bhide (photos), John Binns (iguanas), Sayantan Biswas, Torsten Blanck, Xavier Panades I Blas, Vladimir Bobrov, Stef Boudens, Ricardo G. Buff (Liolaemus), Arjan Borghuis (Ameiva, Cnemidophorus), Rafe Brown (new species, reprints), Don Buden, Ricardo G.Buff (Liolaemus), Brian Bush (Rhinoplocephalus)

C: Todd Campbell (Arrhyton), Ashok Captain (Indian snakes and many photographs), Okan Cetin, Diego F. Cisneros-Heredia (Amphisbaena alba etc.), Ka-shing Cheung (Elaphe moellendorffi), Marcio Roberto Costa Martins (Xenoxybelis), Paul Corcoran (Cyrtodactylus), Georges Coulon (Geckos), Linda Cullen (Smithsonian Institution Press)

D: Ron Dass, Patrick David, Guntram Deichsel (Lacerta), Thomas Dellinger (reptiles of Madeira), Tiffany M. Doan, Martin Domdey

E: Joan Egert (Physignathus), Tim Edelsten (photos), Walter Eisenhofer (for sharing his extensive snake database and help with scanning and OCR), Johan Elmberg (Swedish reptiles), Dirk Embert

F: Chris Feldman (turtles), Gary Fellers (Xantusia), Ansel Fong (Anolis), Uwe Fritz (Chelodina), Carl Gans (amphisbaenians), Maren Gaulke (Philippines), Christine Gemuend, Ioan Ghira, Itzchak Gilboa, Michael Golubev (Russian Agamas), Alan Greer, Kurt Grossenbacher (Switzerland)

G: Lee Grismer (papers and infos), Deso Gregory (photos), Wolfgang Grossmann

H: Arend Hagedorn (lots of corrections on snakes), Chris Harrison (Eryx), Mark Hutchinson (Pygopods), S. Blair Hedges (Caribbean species), Sacha Heppener (photos), Ron Van Heest (geckoes, Anolis), Randriamahazo Herilala, Tsutomu Hikida (Japanese reptiles), Wendy L. Hodges (Phrynosoma), Bradford Hollingsworth (Sauromalus), Claudia Holzhammer, Marinus Hoogmoed, Yann Horstink, Raymond Hoser, Carel Hovingh (photos), Raymond B. Huey, Mark Hutchinson (pygopods)

I: Adel Ibrahim (photos), Ivan Ineich (Psammophis and other stuff), Frank Irrek (Etymology)

J: Michael Jacobi (Atherini), Kate Jackson (Congo), Axel Janke (reprints), Dan Johnson

K: Mirco Sole Kienle (Colubridae), Norbert Kissler (Sanzinia), Boris Klusmeyer (geckoes), Ingo Kober (photos), Chris Koester (Varanus), Claudia Koch (photos), Philippe Kok, Bill Konstant (new species), Michael Kroniger (Holaspis), Kriton Kunz (Opheodrys), Axel Kwet (Trogonophis, photos)

L: Bill Lamar, Ruud de Lang, Robert Langstroth (literature), Edgar Lehr, Thales de Lema, Peter Lenk (Echis, Elaphe), Samuel Li (photos), Harold de Lisle, Sebastian Lotzkat (photos)

M: Ross MacCulloch (new species), J. Robert Macey, Jairo H. Maldonado (Colombian snakes), Ulrich Manthey, Enrique La Marca, Marcio Martins (Bothrops), Chris Mattison, Patrick Mausfeld (Mabuya), James McCranie, Robert Mees, Tomas Mazuch (photos and other info), Arie van der Meijden (photos), Peter Michels, Viral Mistry (photos), Nazzareno Miele, Brad Moon (photos)

N: Marco Natera, Roman Nazarov, Kirsten Nicholson, Manuel Nogales (Gallotia), Herman Núñez (Chile), Randall L. Nydam

O: Juan Carlos Ortiz (Caiman), Mark O'Shea

P: Sandor Pagonyi, James Parham (turtles), Christopher L. Parkinson (Crotalinae), Geoff Patterson (New Zealand Scincs), Olivier S.G. Pauwels, Jarmo Perälä (Testudo), Yannick Perret (gekos), Eric Pianka (Ctenotus), John Pilgrim (Brazil), Matteo Piras (literature), Robert Powell (Cyclura and photo link), Jan Prerost (photos), Martin Pruimers (OCR), Steven Purvis (Phelsuma laticauda)

R: Gilmar Ramirez (Tropidurus, reptiles of Chile), Nasrullah Rastegar-Pouyani (Iran, reprints), Lynn Raw (Lycodonomorphus), Edoardo Razetti, Lynn Raw (chameleons), Todd W. Reeder, Michael Reichert (Callopistes), Steffen Reichle, Christoph Riedwyl (Shinisaurus), Darlene Rigg (Snakes of Indiana), Tondree Robinson, Miguel Trefaut Rodrigues (Brazil), Mark-Oliver Rödel (Ivory coast)

S: Rich Sajdak, Oscar Sanchez, Socorro Montero Santos (Etymology), Walter Schargel (Atractus, Proctoporus), Wulf Schleip, Jirka Schmidt (many new species), Andreas Schmitz (Skinks), Jochen Schroer (Thamnophis), James Schulte (Iguania), Norman Scott (various reprints), Raymond C. Sequenza, Meri Shai, Glen Shea, Roberto Sindaco, Frank Slavens (literature), Roman Smejkal (photos), Charles Smith (Western Kentucky University, HERPFAUN), Hobart Smith (reprints), Filipe Sousa (Tarentola), Jeroen Speybroeck (European reptiles), Ivaylo Stoimenov (Testudo), John Sullivan (photos), Montri Sumontha, Carl Sundberg, Andrej Susor (photos)

T: Tigran Tadevosyan (Turkish reptiles), Steffen Teufert, Terry Thatcher (Lacerta photos), Séan Thomas (photos), Scott Thomson (Australian chelids), Bob Tipton, Farhang Torki, Howard Towner, Angelika und Siegfried Troidl (photos Lacertidae)

U: Thorsten Usée (photo links)

V: Rishi Vairale (photos), Paula H. Valdujo, Alfredo Valido (Canary Islands, Gallotia), Pierre-Yves Vaucher (Chameleon links), Ivan Vergner, Holger Vetter (Phrynops), Pedro Victoriano (Pristidactylus), Nicolas Vidal (Xen-/Oxybelis), Freek Vonk, Kees de Vries (Naja, photos)

W: Philipp Wagner, Jaap Winius, Peter Wirtz (reptiles of Madeira), Greg Watkins-Colwell (Sceloporus), Heiko Werning (Sceloporus), Thomas Wilms (Uromastyx)

Y: M. A. Alonso Rubens Nobuo Yuki

Z: Libor Zajac (photos), Amod Zambre (photos), Thomas Ziegler, Zarazaga, George R. Zug (Carlia etc.), and many others.

Special thanks to Irmgard Uetz and Ruma Thapa for extensive secretarial help and to Frank Slavens who allowed me to use his extensive private library, and to Barry Baker for continuous supply of references.

Last but not least: support by our sponsors is highly appreciated if not essential for this operation.

If you think you have been left out, please let me know or send even MORE data;-)

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