Crocodylia
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Crocodylia (or "crocodylians") is an order of large reptiles that scientists believe branched off from class Reptilia about 220 million years ago.
- Order CROCODYLIA
- Suborder: Eusuchia
- Family: Crocodylidae
- Subfamily: Crocodylinae
- American Crocodile Crocodylus acutus
- Slender-snouted Crocodile Crocodylus cataphractus
- Orinoco Crocodile Crocodylus intermedius
- Australian Freshwater Crocodile Crocodylus johnstoni
- Philippine Crocodile Crocodylus mindorensis
- Morelet's Crocodile Crocodylus moreletii
- Nile Crocodile Crocodylus niloticus
- New Guinea Crocodile Crocodylus novaeguineae
- Mugger/Marsh Crocodile Crocodylus palustris
- Estuarine/Saltwater Crocodile Crocodylus porosus
- Cuban Crocodile Crocodylus rhombifer
- Siamese Crocodile Crocodylus siamensis
- Dwarf Crocodile Osteolaemus tetraspis
- False Gharial/Gavial Tomistoma schlegelii
- Subfamily: Alligatorinae (alligators and caimans)
- American Alligator Alligator mississippiensis
- Chinese Alligator Alligator sinensis
- Common Caiman Caiman crocodilus
- Bespectacled Caiman Caiman crocodilus crocodilus
- Brown Caiman Caiman crocodilus fuscus
- Rio Apaporis Caiman Caiman crocodilus apaporiensis
- Yacare Caiman Caiman crocodilus yacare
- Broad-snouted Caiman Caiman latirostros
- Cuvier's Smooth-fronted Caiman Paleosuchus palpebrosus
- Scheider's Smooth-fronted Caiman Paleosuchus trigonuatus
- Black Caiman Melanosuchus niger
- Subfamily: Gavialinae (Gavial)
- Gharial Gavialis gangeticus
- Subfamily: Crocodylinae
| Contents |
Extinct suborders and families
Suborder: Eusuchia (one family living, see above)
- Family: Stomatosuchidae
- Family: Hylaeochampsidae
- Family: Bernissartiidae
- Family: Stomatosuchidae
- Family: Crocodylidae
Suborder: Protosuchia
- Family: Protosuchidae
- Family: Sphenosuchidae
Suborder: Mesosuchia
- Family: Atoposauridae
- Family: Goniopholidae
- Family: Paralligatoridae
- Family: Notosuchidae
- Family: Libycosuchidae
- Family: Sphagesauridae
- Family: Hsisosuchidae
- Family: Teleosauridae
- Family: Pholidosauridae
- Family: Congosauridae
Suborder: Sebecosuchia
- Family: Baurusuchidae
- Family: Sebecidae
Suborder: Thalattosuchia
- Family: Metriorhynchidae
Systems
Circulatory
Like mammals and unlike other reptiles, crocodiles have a four-chambered heart; however, unlike mammals, oxygenated and deoxygenated blood can be mixed when the foramen of Panazzi is open, which bridges both ventricles in the heart. This opening is typically only open during diving, in order to shunt blood away from the lungs.
External links
- http://www.il-st-acad-sci.org/kingdom/rept007.html
- http://www.il-st-acad-sci.org/kingdom/rept007a.html
- Florida's Museum of Natural History's Crocodilians Natural History & Conservation site (http://www.flmnh.ufl.edu/natsci/herpetology/brittoncrocs/cnhc.html)
- International Crocodile Rescue (http://www.crocodilerescue.com/)de:Krokodile
eo:Krokodilulo fr:Crocodiliens li:Krokodille nl:Krokodilachtigen ja:ワニ目 pt:Crocodylia fi:Krokotiilieläimet