Для построения филогенетического дерева было решено взять таксон Sauropsida. В этой группе выделяют три основные ветви: лепидозавры (гаттерии и чешуйчатые), архозавры (крокодилы и птицы) и черепахи. Были выбраны следующие виды из этого таксона:

Латинское название рода и вида	Таксономия	Мнемоника Swiss-Prot
Boa constrictor	cellular organisms > Eukaryota (eukaryotes) > Opisthokonta > Metazoa (animals) > Eumetazoa > Bilateria > Deuterostomia > Chordata (chordates) > Craniata > Vertebrata (vertebrates) > Gnathostomata (jawed vertebrates) > Teleostomi > Euteleostomi (bony vertebrates) > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda (tetrapods) > Amniota (amniotes) > Sauropsida (sauropsids) > Sauria (diapsids) > Lepidosauria (lizards & snakes) > Squamata (squamates) > Bifurcata (split-tongued squamates) > Unidentata > Episquamata > Toxicofera > Serpentes (snakes) > Henophidia > Boidae (true boas) > Boinae > Boa	BOACO
Laticauda colubrina	cellular organisms > Eukaryota (eukaryotes) > Opisthokonta > Metazoa (animals) > Eumetazoa > Bilateria > Deuterostomia > Chordata (chordates) > Craniata > Vertebrata (vertebrates) > Gnathostomata (jawed vertebrates) > Teleostomi > Euteleostomi (bony vertebrates) > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda (tetrapods) > Amniota (amniotes) > Sauropsida (sauropsids) > Sauria (diapsids) > Lepidosauria (lizards & snakes) > Squamata (squamates) > Bifurcata (split-tongued squamates) > Unidentata > Episquamata > Toxicofera > Serpentes (snakes) > Colubroidea > Elapidae > Laticaudinae > Laticauda	LATCO
Caracara plancus	cellular organisms > Eukaryota (eukaryotes) > Opisthokonta > Metazoa (animals) > Eumetazoa > Bilateria > Deuterostomia > Chordata (chordates) > Craniata > Vertebrata (vertebrates) > Gnathostomata (jawed vertebrates) > Teleostomi > Euteleostomi (bony vertebrates) > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda (tetrapods) > Amniota (amniotes) > Sauropsida (sauropsids) > Sauria (diapsids) > Archelosauria > Archosauria > Dinosauria > Saurischia > Theropoda > Coelurosauria > Aves (birds) > Neognathae > Neoaves > Telluraves (core landbirds) > Australaves > Falconiformes (falcons and others) > Falconidae > Caracara	CARPF
Gallus gallus	cellular organisms > Eukaryota (eukaryotes) > Opisthokonta > Metazoa (animals) > Eumetazoa > Bilateria > Deuterostomia > Chordata (chordates) > Craniata > Vertebrata (vertebrates) > Gnathostomata (jawed vertebrates) > Teleostomi > Euteleostomi (bony vertebrates) > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda (tetrapods) > Amniota (amniotes) > Sauropsida (sauropsids) > Sauria (diapsids) > Archelosauria > Archosauria > Dinosauria > Saurischia > Theropoda > Coelurosauria > Aves (birds) > Neognathae > Galloanserae > Galliformes (landfowls) > Phasianidae (turkeys) > Phasianinae > Gallus	CHICK
Gallus lafayettii	cellular organisms > Eukaryota (eukaryotes) > Opisthokonta > Metazoa (animals) > Eumetazoa > Bilateria > Deuterostomia > Chordata (chordates) > Craniata > Vertebrata (vertebrates) > Gnathostomata (jawed vertebrates) > Teleostomi > Euteleostomi (bony vertebrates) > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda (tetrapods) > Amniota (amniotes) > Sauropsida (sauropsids) > Sauria (diapsids) > Archelosauria > Archosauria > Dinosauria > Saurischia > Theropoda > Coelurosauria > Aves (birds) > Neognathae > Galloanserae > Galliformes (landfowls) > Phasianidae (turkeys) > Phasianinae > Gallus	GALLA
Syrmaticus reevesii	cellular organisms > Eukaryota (eukaryotes) > Opisthokonta > Metazoa (animals) > Eumetazoa > Bilateria > Deuterostomia > Chordata (chordates) > Craniata > Vertebrata (vertebrates) > Gnathostomata (jawed vertebrates) > Teleostomi > Euteleostomi (bony vertebrates) > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda (tetrapods) > Amniota (amniotes) > Sauropsida (sauropsids) > Sauria (diapsids) > Archelosauria > Archosauria > Dinosauria > Saurischia > Theropoda > Coelurosauria > Aves (birds) > Neognathae > Galloanserae > Galliformes (landfowls) > Phasianidae (turkeys) > Phasianinae > Syrmaticus	SYRRE
Micrurus fulvius	cellular organisms > Eukaryota (eukaryotes) > Opisthokonta > Metazoa (animals) > Eumetazoa > Bilateria > Deuterostomia > Chordata (chordates) > Craniata > Vertebrata (vertebrates) > Gnathostomata (jawed vertebrates) > Teleostomi > Euteleostomi (bony vertebrates) > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda (tetrapods) > Amniota (amniotes) > Sauropsida (sauropsids) > Sauria (diapsids) > Lepidosauria (lizards & snakes) > Squamata (squamates) > Bifurcata (split-tongued squamates) > Unidentata > Episquamata > Toxicofera > Serpentes (snakes) > Colubroidea > Elapidae > Elapinae > Micrurus (coral snakes)	MICFL
Eryx elegans	cellular organisms > Eukaryota (eukaryotes) > Opisthokonta > Metazoa (animals) > Eumetazoa > Bilateria > Deuterostomia > Chordata (chordates) > Craniata > Vertebrata (vertebrates) > Gnathostomata (jawed vertebrates) > Teleostomi > Euteleostomi (bony vertebrates) > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda (tetrapods) > Amniota (amniotes) > Sauropsida (sauropsids) > Sauria (diapsids) > Lepidosauria (lizards & snakes) > Squamata (squamates) > Bifurcata (split-tongued squamates) > Unidentata > Episquamata > Toxicofera > Serpentes (snakes) > Henophidia > Boidae (true boas) > Erycinae > Eryx	ERYEL
Falco femoralis	cellular organisms > Eukaryota (eukaryotes) > Opisthokonta > Metazoa (animals) > Eumetazoa > Bilateria > Deuterostomia > Chordata (chordates) > Craniata > Vertebrata (vertebrates) > Gnathostomata (jawed vertebrates) > Teleostomi > Euteleostomi (bony vertebrates) > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda (tetrapods) > Amniota (amniotes) > Sauropsida (sauropsids) > Sauria (diapsids) > Archelosauria > Archosauria > Dinosauria > Saurischia > Theropoda > Coelurosauria > Aves (birds) > Neognathae > Neoaves > Telluraves (core landbirds) > Australaves > Falconiformes (falcons and others) > Falconidae > Falco (falcons)	FALFE
Falco sparverius	cellular organisms > Eukaryota (eukaryotes) > Opisthokonta > Metazoa (animals) > Eumetazoa > Bilateria > Deuterostomia > Chordata (chordates) > Craniata > Vertebrata (vertebrates) > Gnathostomata (jawed vertebrates) > Teleostomi > Euteleostomi (bony vertebrates) > Sarcopterygii > Dipnotetrapodomorpha > Tetrapoda (tetrapods) > Amniota (amniotes) > Sauropsida (sauropsids) > Sauria (diapsids) > Archelosauria > Archosauria > Dinosauria > Saurischia > Theropoda > Coelurosauria > Aves (birds) > Neognathae > Neoaves > Telluraves (core landbirds) > Australaves > Falconiformes (falcons and others) > Falconidae > Falco (falcons)	FALSP

Скобочная формула дерева в формате Newick: (((BOACO,ERYEL),(LATCO,MICFL)),((SYRRE,(CHICK,GALLA)),(CARPF,(FALSP,FALFE))));

Филогенетическое дерево этих организмов изображено на рис. 1.