Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
[crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Clade "neomura" Cavalier-Smith 1987
Domain Eukaryota Chatton, 1925 - eukaryotes
Clade neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes
Clade neozoa Cavalier-Smith 1993
Clade scotokaryotes Cavalier-Smith 2000
Clade podiates Cavalier-Smith 2012
[crown] Clade Amorphea Adl et al. 2012
[crown] Clade Opisthokonta Cavalier-Smith 1987
Superkingdom Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
Clade filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith 2008
Kingdom Animalia Linnaeus, 1758 - animals
Clade Planulozoa Wallberg, Thollesson, Farris & Jondelius 2004
Subkingdom Bilateria Hatschek, 1888 - bilaterians
Clade Nephrozoa Jondelius, Ruiz-Trillo, Baguñà & Riutort 2002
Infrakingdom Deuterostomia Grobben, 1908
Phylum Chordata Bateson, 1885 - chordates
Subphylum Vertebrata Cuvier, 1812 - vertebrates
Myopterygii - myopterygians
Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
Grade Teleostomi Bonaparte, 1836
Euteleostomi - bony vertebrates
Clade Sarcopterygii Romer, 1955
[crown] Rhipidistia Cope, 1887
Clade Tetrapodomorpha Ahlberg, 1991
Clade Osteolepidimorpha
Clade Tetrapoda Goodrich, 1930
[crown] Clade Neotetrapoda
Clade Reptiliomorpha Säve-Söderbergh, 1934
Batrachosauria
Clade Amniota Haeckel, 1866 - amniotes
Class Reptilia Linnaeus, 1758 - reptiles
Eureptilia Olson, 1947
Romeriida Gauthier, Kluge & Rowe, 1988
Clade Diapsida Osborn 1903 [Laurin 1991]
Clade Neodiapsida Benton 1985 [Laurin 1991] {Reisz, Modesto & Scott 2011}
[crown] Clade Sauria McCartney 1802 [Gauthier, Kluge & Rowe 1988]
Subclass Lepidosauromorpha Benton, 1983
Superorder Lepidosauriformes Gauthier et al., 1988
Order Squamata Oppel, 1811
Bifurcata Vidal & Hedges, 2005
Unidentata Vidal & Hedges, 2005
Episquamata Vidal & Hedges, 2005
Toxicofera Vidal & Hedges, 2005
Ophidia Brongniart, 1800
Suborder Serpentes Linnaeus, 1758 - snakes
Infraorder Alethinophidia Nopcsa, 1923
Afrophidia Vidal, Delmas & Hedges, 2007
Caenophidia Hoffstetter, 1939
Superfamily Colubroidea Oppel, 1811
Family Viperidae Oppel, 1811 - vipers and pit vipers
Subfamily Crotalinae Oppel, 1811 - pit vipers
Genus Crotalusᵀ Linnaeus, 1758
01 †Crotalus potterensis Brattstrom, 1953
02 Crotalus adamanteus Palisot de Beauvois, 1799 - eastern diamondback rattlesnake
03 Crotalus angelensis Klauber 1963
04 Crotalus aquilus Klauber, 1952
05 Crotalus armstrongi Campbell, 1979
06 Crotalus atrox Baird & Girard, 1853 - western diamondback rattlesnake
07 Crotalus basiliscus (Cope, 1864)
08 Crotalus campbelli Bryson Jr., Linkem, Dorcas, Lathrop, Jones, Alvarado-Díaz, Grünwald & Murphy, 2014
09 Crotalus catalinensis Cliff, 1954
10 Crotalus cerastes Hallowell, 1854 - sidewinder
11 Crotalus culminatus Klauber, 1952
12.1 Crotalus durissus Linnaeus, 1758 - Aruba Island rattlesnake
12.2 Crotalus totonacus Gloyd & Kauffeld, 1940
13 Crotalus enyo (Cope, 1861)
14 Crotalus ericsmithi Campbell & Flores-Villela, 2008
15 Crotalus horridusᵀ Linnaeus, 1758 - timber rattlesnake
16 Crotalus intermedius Troschel, 1865
17 Crotalus lannomi Tanner, 1966
18.1 Crotalus lepidus (Kennicott, 1861) - rock rattlesnake
18.2 Crotalus morulus Klauber, 1952
19.1 Crotalus mitchellii (Cope, 1861) - speckled rattlesnake
19.2 Crotalus pyrrhus (Cope, 1867)
19.3 Crotalus stephensi Klauber, 1930
20 Crotalus molossus Baird & Girard, 1853 - black-tailed rattlesnake
21 Crotalus ornatus Hallowell, 1854
22 Crotalus polystictus (Cope, 1865)
23 Crotalus pricei Van Denburgh, 1895 - twin-spotted rattlesnake
24 Crotalus pusillus Klauber, 1952
25 Crotalus ravus Cope, 1865
26 Crotalus ruber Cope, 1892 - red diamond rattlesnake
27 Crotalus scutulatus (Kennicott, 1861) - Mojave rattlesnake
28 Crotalus simus Latreille, 1801
29 Crotalus stejnegeri Dunn, 1919
30 Crotalus tancitarensis Alvarado-Díaz & Campbell, 2004
31 Crotalus tigris Kennicott, 1859 - tiger rattlesnake
32 Crotalus tlaloci Bryson, Linkem, Dorcas, Lathrop, Jones, Alvarado-Díaz, Grünwald & Murphy, 2014
33 Crotalus transversus Taylor, 1944
34 Crotalus triseriatus (Wagler, 1830)
35 Crotalus tzabcan Klauber, 1952
36.1 Crotalus viridis (Rafinesque, 1818) - western rattlesnake
36.2.1 Crotalus oreganus Holbrook, 1840
36.2.2 Crotalus cerberus (Coues, 1875)
37 Crotalus willardi Meek, 1905 - ridge-nosed rattlesnake