Order

Crocodilia

18 species in 3 families. Maximum lifespan ranges from 24.1 years (Dwarf caiman) to 77 years (American alligator).

Species

with a complete mtDNA

Lifespan range

24.1–77 yr

Median GC

42.9%

Range 40.9–47.6%

Families

Largest: Crocodylidae (11)

The Crocodilia tree

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Outer ring: Maximum lifespan, log scale

Each ring is one rank. Scroll or use + and − to zoom, drag to move; select a group to zoom into it, a species to open it.

3 families, by species count

Whole-genome GC content against maximum lifespan. Hover or tap a point; select it again to open the species.

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Top 5 and the shortest-lived

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Species in Crocodilia

Alligator mississippiensis	American alligator	Alligatoridae	77 yr	16,646 bp	43.03%
Osteolaemus tetraspis	West African dwarf crocodile	Crocodylidae	70 yr	16,814 bp	40.85%
Alligator sinensis	Chinese alligator	Alligatoridae	65 yr	16,746 bp	45.98%
Gavialis gangeticus	Gharial	Gavialidae	59 yr	17,185 bp	41.47%
Crocodylus porosus	Saltwater crocodile	Crocodylidae	57 yr	16,916 bp	43.10%
Mecistops cataphractus	African slender-snouted crocodile	Crocodylidae	56.1 yr	16,847 bp	41.54%
Crocodylus niloticus	Nile crocodile	Crocodylidae	56 yr	16,830 bp	43.37%
Crocodylus novaeguineae	New Guinea crocodile	Crocodylidae	51 yr	16,894 bp	43.29%
Crocodylus siamensis	Siamese crocodile	Crocodylidae	49 yr	16,836 bp	43.24%
Crocodylus rhombifer	Cuban crocodile	Crocodylidae	48 yr	16,795 bp	42.86%
Crocodylus acutus	American crocodile	Crocodylidae	47 yr	16,883 bp	42.52%
Crocodylus palustris	Mugger, or Marsh crocodile	Crocodylidae	44 yr	17,052 bp	42.68%
Crocodylus intermedius	Orinoco crocodile	Crocodylidae	41 yr	16,828 bp	42.74%
Caiman crocodilus	Spectacled caiman	Alligatoridae	40 yr	17,900 bp	42.55%
Paleosuchus trigonatus	Smooth-fronted caiman	Alligatoridae	40 yr	15,948 bp	47.39%
Crocodylus moreletii	Morelet's crocodile	Crocodylidae	25.4 yr	16,827 bp	42.99%
Tomistoma schlegelii	False gharial	Gavialidae	24.7 yr	16,345 bp	41.70%
Paleosuchus palpebrosus	Dwarf caiman	Alligatoridae	24.1 yr	14,935 bp	47.60%