James R. Dixon
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James Ray Dixon (August 1, 1928, in
Houston, Texas Houston ( ) is the List of cities in Texas by population, most populous city in the U.S. state of Texas and in the Southern United States. Located in Southeast Texas near Galveston Bay and the Gulf of Mexico, it is the county seat, seat of ...
– January 10, 2015, in
Bryan, Texas Bryan is a city in and the county seat of Brazos County, Texas, United States. It is located in the heart of the Brazos Valley (East and Central Texas). As of the 2020 census, the city had a population of 83,980. Bryan borders the city of C ...
) was professor emeritus and curator emeritus of
amphibian Amphibians are ectothermic, anamniote, anamniotic, tetrapod, four-limbed vertebrate animals that constitute the class (biology), class Amphibia. In its broadest sense, it is a paraphyletic group encompassing all Tetrapod, tetrapods, but excl ...
s and
reptile Reptiles, as commonly defined, are a group of tetrapods with an ectothermic metabolism and Amniotic egg, amniotic development. Living traditional reptiles comprise four Order (biology), orders: Testudines, Crocodilia, Squamata, and Rhynchocepha ...
s at the Texas Cooperative Wildlife Collection at
Texas A&M University Texas A&M University (Texas A&M, A&M, TA&M, or TAMU) is a public university, public, Land-grant university, land-grant, research university in College Station, Texas, United States. It was founded in 1876 and became the flagship institution of ...
. He lived in
El Campo, Texas El Campo is a city in Wharton County, Texas, United States. Its population was 12,350 at the 2020 Census, making it the largest city in Wharton County. Geography According to the United States Census Bureau, the city has a total area of 7.5&nb ...
, throughout most of his childhood. He published prolifically on the subject of
herpetology Herpetology (from Ancient Greek ἑρπετόν ''herpetón'', meaning "reptile" or "creeping animal") is a branch of zoology concerned with the study of amphibians (including frogs, salamanders, and caecilians (Gymnophiona)) and reptiles (in ...
in his distinguished career, authoring and co-authoring several books, book chapters, and numerous peer reviewed notes and articles, describing two new
genera Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial s ...
, and many new
species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
, earning him a reputation as one of the most prominent
herpetologist Herpetology (from Ancient Greek ἑρπετόν ''herpetón'', meaning "reptile" or "creeping animal") is a branch of zoology concerned with the study of amphibians (including frogs, salamanders, and caecilians (Gymnophiona)) and reptiles (in ...
s of his generation. His main research focus was morphology based
systematics Systematics is the study of the diversification of living forms, both past and present, and the relationships among living things through time. Relationships are visualized as evolutionary trees (synonyms: phylogenetic trees, phylogenies). Phy ...
of amphibians and reptiles worldwide with emphasis on Texas, US, Mexico, Central America, and South America, although bibliographies, conservation, ecology, life history and zoogeography have all been the subjects of his extensive publications.


Eponyms

A genus of lizards, ''
Dixonius ''Dixonius'' is a genus of Asian geckos, commonly known as leaf-toed geckos. Etymology The Genus, generic name, ''Dixonius'', is in honor of Americans, American Herpetology, herpetologist James R. Dixon. Species There are fifteen species that ...
'' , leaf-toed geckos from
Southeast Asia Southeast Asia is the geographical United Nations geoscheme for Asia#South-eastern Asia, southeastern region of Asia, consisting of the regions that are situated south of China, east of the Indian subcontinent, and northwest of the Mainland Au ...
, was named in his honor as well as several species of reptiles and amphibians, e.g., the white-lipped peeping frog, ''Eleutherodactylus dixoni'' (= ''
Eleutherodactylus albolabris ''Eleutherodactylus albolabris'' is a species of frog in the family Eleutherodactylidae. It is endemic to Mexico. Its natural habitat is subtropical or tropical moist lowland forest. It is found in the Sierra Madre del Sur of Guerrero state, fro ...
'' ); Dixon's peeping frog, ''Eleutherodactylus jamesdixoni'' Devitt et al, 2023; the gray checkered whiptail, ''Cnemidophorus dixoni'' (= '' Aspidoscelis tesselatus'' ); Dixon's leaf-toed gecko, '' Phyllodactylus dixoni'' ; and the large-eyed snake, ''Thamnodynastes dixoni'' . Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . ("Dixon", p. 73).


Education and early career

Dixon attained his Bachelor of Science from
Howard Payne University Howard Payne University is a Private university, private Baptist university in Brownwood, Texas, United States. It is affiliated with the Baptist General Convention of Texas. Noah T. Byers and John David Robnett founded Howard Payne College in 18 ...
(1950), and then served in the
Korean War The Korean War (25 June 1950 – 27 July 1953) was an armed conflict on the Korean Peninsula fought between North Korea (Democratic People's Republic of Korea; DPRK) and South Korea (Republic of Korea; ROK) and their allies. North Korea was s ...
(1951–1953). Upon returning from the war, he briefly acted as Curator of Reptiles at the Ross Allen Reptile Institute from 1954 to 1955. He earned his master's degree (1957) and PhD in (1961) from Texas A&M University. He was an associate professor of veterinary medicine at Texas A&M from 1959 until 1961.


Career

From 1961 until 1965 he was an associate professor of wildlife management at
New Mexico State University New Mexico State University (NMSU or NM State) is a public, land-grant, research university in Las Cruces, New Mexico, United States. Founded in 1888, it is the state's oldest public institution of higher education, and was the original land-g ...
and served as a consultant to the New Mexico state Game and Fisheries department. He was on the faculty of the
University of Southern California The University of Southern California (USC, SC, or Southern Cal) is a Private university, private research university in Los Angeles, California, United States. Founded in 1880 by Robert M. Widney, it is the oldest private research university in ...
and from 1965 until 1967 he was Curator of Herpetology at the Life Sciences Division at the Los Angeles County Museum in California. In 1967 he returned to Texas to become a professor at Texas A&M University, teaching wildlife and fisheries science, and curator of the Texas Cooperative Wildlife Collection or TCWC (recently renamed Biodiversity Research and Teaching Collections or BRTC). Over 20 herpetologists earned Ph.D.s studying under him at Texas A&M University. He has also served as president of several herpetological and naturalist societies including The Herpetologist League, Texas Herpetological Society, Texas Academy of Science; Society for the Study of Amphibians and Reptiles, Southwestern Association of Naturalists, and on the board of directors of the Texas Systems of Natural Laboratories. He has also served on the faculty of Stephen F. Austin State University and Texas State University.


New genera of reptiles described by James R. Dixon

Listed in chronological order. *'' Crenadactylus'' – tiny Australian clawless geckos *''
Asaccus ''Asaccus'' is a genus of geckos, commonly known as Southwest Asian leaf-toed geckos, in the family Phyllodactylidae. Papenfuss TJ et al. (2010)"Phylogenetic relationships among species of Southwest Asian leaf-toed geckos (''Asaccus'')". ''Procee ...
'' – Southwest Asian leaf-toed geckos


A partial list of new amphibian and reptile species described by James R. Dixon

Listed in chronological order. *''
Eleutherodactylus dilatus ''Eleutherodactylus dilatus'' is a species of frog in the family Eleutherodactylidae. It is endemic to Mexico and restricted to the Chilpancingo region of the Sierra Madre del Sur in central Guerrero. Its common name is Guerreran peeping frog. D ...
'' – Guerreran peeping frog *'' Eleutherodactylus grandis'' – great peeping frog *'' Coleonyx reticulatus'' – reticulate banded gecko *'' Eleutherodactylus rufescens'' – red peeping frog *'' Phyllodactylus duellmani'' – Duellman's pigmy leaf-toed gecko *''
Phyllodactylus insularis The Belize leaf-toed gecko (''Phyllodactylus insularis'') is a species of gecko native to Belize. It is a small, pale, large headed gecko only found on small islands off Belize's coast and was first described by James R. Dixon in 1960. This spec ...
'' –
Belize Belize is a country on the north-eastern coast of Central America. It is bordered by Mexico to the north, the Caribbean Sea to the east, and Guatemala to the west and south. It also shares a maritime boundary with Honduras to the southeast. P ...
leaf-toed gecko *'' Phyllodactylus paucituberculatus'' – Rio Marquez Valley gecko *'' Ambystoma flavipiperatum'' – yellow-peppered salamander *''
Phyllodactylus davisi Davis's leaf-toed gecko (''Phyllodactylus davisi''), also known Common name, commonly as Davis' leaf-toed gecko, is a species of lizard in the Family (biology), family Phyllodactylidae. The species is Endemism, endemic to Mexico. Etymology The S ...
'' – Davis' leaf-toed gecko *''
Phyllodactylus nocticolus The peninsula leaf-toed gecko (''Phyllodactylus nocticolus'') is a medium-sized gecko. It is found in southern California (USA) and the Baja California Peninsula (Mexico), including many islands in Gulf of California as well as Islas Magdalena ...
'' – peninsula leaf-toed gecko *''
Eleutherodactylus nivicolimae ''Eleutherodactylus'' is a genus of frogs in the family Eleutherodactylidae.Hedges, S. B., W. E. Duellman, and M. P. Heinicke . 2008. New World direct-developing frogs (Anura: Terrarana): molecular phylogeny, classification, biogeography, and co ...
'' –
Nevado de Colima Nevado (1813? – 1821) was a Mucuchies dog that was given to Simón Bolívar by the local people of Mucuchíes, Mérida, in the Venezuelan Andes. Life It was given as a kind of present shortly after the Battle of Niquitao during his triu ...
chirping frog *''
Phyllodactylus angelensis ''Phyllodactylus xanti'' is a species of lizard in the Family (biology), family Phyllodactylidae. It is endemic to northwestern Mexico. It is also known as the leaf-toed gecko (leaf-toed gecko, among many other species) or Raza Island leaf-toed g ...
'' – Angel Island leaf-toed gecko *''
Phyllodactylus apricus The Las Animas Island gecko (''Phyllodactylus apricus'') is a species of gecko. It is endemic to Isla Las Ánimas in Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Lat ...
'' – Las Animas Island gecko *''
Phyllodactylus bugastrolepis The Catalina Island leaf-toed gecko (''Phyllodactylus bugastrolepis'') is a species of gecko. It is endemic to Isla Santa Catalina in Gulf of California, Mexico Mexico, officially the United Mexican States, is a country in North America. I ...
'' – Catalina Island leaf-toed gecko *''
Phyllodactylus partidus The Partida Norte leaf-toed gecko (''Phyllodactylus partidus'') is a species of gecko. It is endemic to Isla Partida and Isla Cardonosa Este in Mexico Mexico, officially the United Mexican States, is a country in North America. It is the ...
'' – Isla Partida Norte leaf-toed gecko *''
Phyllodactylus santacruzensis The Santa Cruz leaf-toed gecko (''Phyllodactylus santacruzensis'') is a species of gecko. It is endemic to Isla Santa Cruz in Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost count ...
'' – Santa Cruz leaf-toed gecko *''
Phyllodactylus tinklei ''Phyllodactylus'' is a genus of geckos distributed in South America and Central America, and as far north as the southern United States. They are commonly known as "leaf-toed geckos" in their native range, and otherwise as American leaf-toed gec ...
'' – Raza Island leaf-toed gecko *'' Phyllodactylus palmeus'' –
Honduras Honduras, officially the Republic of Honduras, is a country in Central America. It is bordered to the west by Guatemala, to the southwest by El Salvador, to the southeast by Nicaragua, to the south by the Pacific Ocean at the Gulf of Fonseca, ...
leaf-toed gecko *''
Phyllodactylus angustidigitus The narrow leaf-toed gecko (''Phyllodactylus angustidigitus'') is a medium-sized gecko with a maximum snout-vent length of 57 mm. This species is endemic from the Ica Region in southern Peru, and its known geographical distribution is restr ...
'' – narrow leaf-toed gecko *'' Phyllodactylus clinatus'' – Cerro Illescas gecko *'' Phyllodactylus interandinus'' –
Andes The Andes ( ), Andes Mountains or Andean Mountain Range (; ) are the List of longest mountain chains on Earth, longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range ...
leaf-toed gecko *'' Phyllodactylus johnwrighti'' – Rio Huancabamba leaf-toed gecko *'' Phyllodactylus kofordi'' – coastal leaf-toed gecko *'' Phyllodactylus pumilus'' – leaf-toed gecko *'' Phyllodactylus sentosus'' –
Lima Lima ( ; ), founded in 1535 as the Ciudad de los Reyes (, Spanish for "City of Biblical Magi, Kings"), is the capital and largest city of Peru. It is located in the valleys of the Chillón River, Chillón, Rímac River, Rímac and Lurín Rive ...
leaf-toed gecko *''
Pseudogonatodes peruvianus The Peru clawed gecko (''Pseudogonatodes peruvianus'') is a species of lizard in the Sphaerodactylidae family found in Peru and Colombia Colombia, officially the Republic of Colombia, is a country primarily located in South America with ...
'' –
Peru Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and Colombia, in the east by Brazil, in the southeast by Bolivia, in the south by Chile, and in the south and west by the Pac ...
clawed gecko *''
Sceloporus exsul ''Sceloporus exsul'', the Queretaran desert lizard, is a species of lizard in the family Phrynosomatidae. It is endemic to Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country i ...
'' – Queretaran desert spiny lizard *'' Hypsiglena tanzeri'' – Tanzer's night snake *''
Bachia huallagana ''Bachia huallagana'', Dixon's bachia, is a species of lizard in the family Gymnophthalmidae. It is endemic to Peru Peru, officially the Republic of Peru, is a country in western South America. It is bordered in the north by Ecuador and ...
'' – Dixon's bachia *''
Asaccus griseonotus ''Asaccus griseonotus'', also known as the grey-spotted leaf-toed gecko or grey-marked gecko, is a species of lizard in the family Phyllodactylidae. It is found in Iraq and Iran Iran, officially the Islamic Republic of Iran (IRI) and a ...
'' – gray-marked gecko *'' Rhachisaurus brachylepis'' – Dixon's antosaura *'' Anotosaura vanzolinia'' – Vanzolini's antosaura *'' Helicops yacu'' – Peru keelback *'' Bachia guianensis'' –
Guyana Guyana, officially the Co-operative Republic of Guyana, is a country on the northern coast of South America, part of the historic British West Indies. entry "Guyana" Georgetown, Guyana, Georgetown is the capital of Guyana and is also the co ...
bachia *''
Erythrolamprus pyburni ''Erythrolamprus pyburni'', Pyburn's tropical forest snake, is a species of snake in the Family (biology), family Colubridae. The species is endemic to Colombia. It is only known from its Type locality (biology), type locality, Loma Linda in the ...
'' – Pyburn's tropical forest snake *''
Typhlops minuisquamus The Basin worm snake (''Amerotyphlops minuisquamus'') is a species of snake in the Typhlopidae family.McDiarmid, Roy W., Jonathan A. Campbell, and T'Shaka A. Touré, 1999. ''Snake Species of the World: A Taxonomic and Geographic Reference, vol. 1 ...
'' – basin worm snake *''
Typhlops paucisquamus The Pernambuco worm snake (''Amerotyphlops paucisquamus'') is a species of snake in the Typhlopidae The Typhlopidae are a family of blind snakes. They are found mostly in the tropical regions of Africa, Asia, the Americas, and all mainland A ...
'' –
Pernambuco Pernambuco ( , , ) is a States of Brazil, state of Brazil located in the Northeast Region, Brazil, Northeast region of the country. With an estimated population of 9.5 million people as of 2024, it is the List of Brazilian states by population, ...
worm snake *''
Kentropyx vanzoi ''Kentropyx vanzoi'', also known commonly as Gallagher's kentropyx and ''o calanguinho-listrado'' in Brazilian Portuguese, is a species of lizard in the family Teiidae. The species is native to central South America. Etymology The specific name ...
'' – Gallagher's kentropyx *''
Neusticurus medemi ''Neusticurus medemi'', also known commonly as Medem's neusticurus, is a species of lizard in the family Gymnophthalmidae. The species is native to northern South America. Etymology The specific name, ''medemi'', is in honor of Colombian herpet ...
'' – Medem's neisticurus *''
Erythrolamprus andinus ''Erythrolamprus andinus'' is a species of snake in the Family (biology), family Colubridae. The species is found in Bolivia and Peru. References

{{Taxonbar, from=Q3242026 Erythrolamprus Reptiles of Bolivia Reptiles of Peru Reptiles desc ...
'' – ground snake *''
Liotyphlops argaleus ''Liotyphlops'' is a genus of blind snakes in the family Anomalepididae. The genus is native to Central America and South America. It contains 12 species that are recognized as being valid. www.reptile-database.org. Geographic range Species of ...
'' – ground snake *''
Erythrolamprus atraventer Dixon's ground snake (''Erythrolamprus atraventer'') is a species of snake in the family Colubridae. The species is endemic to Southeastern Brazil. Classification ''Erythrolamprus atraventer'' belongs to the genus '' Erythrolamprus'', which co ...
'' – Dixon's ground snake *''
Erythrolamprus maryellenae ''Erythrolamprus maryellenae'', Maryellen's ground snake, is a species of snake in the family Colubridae. The species is found in Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is th ...
'' – Mary Ellen's ground snake *''
Lygophis vanzolinii ''Lygophis vanzolinii'', Vanzolini's ground snake, is a species of snake in the family Colubridae. The species is native to Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It c ...
'' – Vanzolini's ground snake *'' Cnemidophorus gramivagus'' – whiptail lizard *''
Erythrolamprus ceii ''Erythrolamprus ceii'' is a species of snake in the family Colubridae. The species is found in Bolivia and Argentina. Classification ''Erythrolamprus ceii'' belongs to the genus '' Erythrolamprus'', which contains over 50 species. The genus ' ...
'' – Cei's ground snake *'' Sceloporus chaneyi'' –
Chaney's Chaney's was a chain of department stores in Southern California. Harold Oaks Chaney (b. Ohio) opened a dry goods store in Lennox, California, in 1924, then his first department store in Hawthorne, California, southwest of Los Angeles. Chaney open ...
bunchgrass lizard *''
Chironius laurenti ''Chironius laurenti'' is a species of nonvenomous snake in the family Colubridae. The species is native to Bolivia and Brazil. The species was named in honor of Raymond Laurent. Taxonomy ''C. laurenti'' belongs to the genus ''Chironius'' (com ...
'' – Laurent's sipo *'' Chironius septentrionalis'' –
South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...
n sipo *''
Tantilla johnsoni ''Tantilla'' is a large genus of harmless New World snakes in the family Colubridae. The genus includes 66 species, which are commonly known as centipede snakes, black-headed snakes, and flathead snakes. Wilson, Larry David (1982). Tanti ...
'' – Chiapan centipede snake *''
Erythrolamprus janaleeae ''Erythrolamprus janaleeae'' is a species of snake in the subfamily Dipsadinae of the Family (biology), family Colubridae. The species is Endemism, endemic to Peru. Etymology The Specific name (zoology), specific name, ''janaleeae'', is in honor ...
'' – ground snake *''
Erythrolamprus vitti ''Erythrolamprus vitti'' is a species of snake in the family Colubridae Colubridae (, commonly known as colubrids , from , 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest fossil species of the f ...
'' – Vitt's ground snake *'' Micrurus tamaulipensis'' –
Sierra de Tamaulipas The Sierra de Tamaulipas is an isolated, semi-tropical mountain range in the Mexican state of Tamaulipas. Its highest point is . There are no cities or towns in the Sierra and the small population is largely agricultural. The higher elevations o ...
coral snake *''
Lampropeltis webbi ''Lampropeltis webbi'' is a species of king snake in the Family (biology), family Colubridae. The species is endemic to Mexico. Currently, there are only five known specimens, with one being a live snake. Etymology The Specific name (zoology), s ...
'' –
Webb's Webb's a.k.a. H. S. Webb, was a department store based in Glendale, California, the first in that city. Origins The store was founded by Harry S. Webb (d. 1947) in 1917 in Downtown Glendale in a single room. It had locations in the Glendale Fashio ...
kingsnake *'' Pristimantis waoranii'' – South American rain frog ''
Nota bene ( ; plural: ) is the Latin language, Latin phrase meaning ''note well''. In manuscripts, ''nota bene'' is abbreviated in upper-case as NB and N.B., and in lower-case as n.b. and nb; the editorial usages of ''nota bene'' and ''notate bene'' fi ...
'': A
binomial authority In taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, altho ...
in parentheses indicates that the species was originally described in a different genus.


References


External links and further reading

*Altig R (2012). "Academic Lineages of Doctoral Degrees in Herpetology (third edition)". pp. 471–564. ''In'': Adler K (2012). ''Contributions to the History of Herpetology''. Society for the Study of Amphibians and Reptiles. 564 pp. * Bailey JR, Thomas RA (2007). "A revision of the South American snake genus ''Thamnodynastes'' Wagler, 1830 (Serpentes, Colubridae, Tachymenini). II. Three new species from northern South America, with further descriptions of ''Thamnodynastes gambotensis'' Pérez-Santos and Moreno and ''Thamnodynastes ramonriveroi'' Manzanilla & Sánchez". ''Memoria de la Fundación La Salle de Ciencias Naturales'' 166: 7-27. * Bauer AM, Good DA, Branch WR (1997). "The taxonomy of the Southern African leaf-toed geckos (Squamata: Gekkonidae), with a review of Old World "''Phyllodactylus''" and the description of five new genera". ''Proc. California Acad. Sci.'' 49 (14): 447–497. *Beltz, Ellin (2006)
Biographies of People Honored in the Herpetological Nomenclature in North America
*Hibbitts, Toby J.; Vaughan, R. Kathryn; Sites, Jack W. Jr; Fitzgerald, Lee A. (2018). "James Ray Dixon (1928–2015)". ''Herpetological Review'' 49 (1): 168–174. * Lynch JD (1991). "Three replacement names for preoccupied names in the genus ''Eleutherodactylus''(Amphibia: Leptodactylidae)". ''Copeia'' 1991: 1138–1139. * *Rivero-Blanco C, Lancini AR (1968) (1967). "Phyllodactylus dixoni: ''una nueva especie de lagarto (Sauria: Gekkoninae) de Venezuela'' ". ''Memoria de la Sociedad de Ciencias Naturales La Salle'' 78: 168−175. (in Spanish). *Scudday JF (1973). "A New Species of Lizard of the ''Cnemidophorus tesselatus'' Group from Texas". ''Journal of Herpetology'' 7 (4): 363–371. * Smith HM, Smith RB (1973). ''Synopsis of the Herpetofauna of Mexico, Vol. II: Analysis of the Literature Exclusive of the Mexican Axolotl''. Augusta, West Virginia: Eric Lundberg. xxxiii + 367 pp.
Texas Cooperative Wildlife Collection
{{DEFAULTSORT:Dixon, James R. American herpetologists 1928 births 2015 deaths American biologists Howard Payne University alumni Texas A&M University alumni 20th-century American zoologists Scientists from Houston People from El Campo, Texas