Alligatoridae
Alligatoridae | |
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American alligator (Alligator mississippiensis) | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Reptilia |
Clade: | Archosauromorpha |
Clade: | Archosauriformes |
Order: | Crocodilia |
Clade: | Globidonta |
Family: | Alligatoridae Gray, 1844 |
Subfamilies | |
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The
Phylogeny
The superfamily
The simplified
Crocodylia
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(crown group) |
The below detailed cladogram shows one proposal for the internal relationships within Alligatoridae[6] (although the exact alligatoroid phylogeny is still disputed).
Alligatoroidea |
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( stem-based group )
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Evolution
The superfamily
True alligators
The lineage including alligators proper (
Caimans
In
C. crocodilus, the
Although caimans have not been studied in depth, scientists have learned their mating cycles (previously thought to be spontaneous or year-round) are linked to the rainfall cycles and the river levels, which increases chances of survival for their offspring.
Taxonomy
† = extinct
- Family Alligatoridae
- Subfamily Alligatorinae
- Genus Alligator
- † Alligator hailensis
- † Alligator mcgrewi
- † Alligator mefferdi
- Alligator mississippiensis, American alligator
- † Alligator olseni
- † Alligator prenasalis
- Alligator sinensis, Chinese alligator
- † Alligator thomsoni
- Genus † Allognathosuchus
- Genus † Arambourgia
- Genus † Ceratosuchus
- Genus † Chrysochampsa
- Genus † Eoalligator
- Genus † Hassiacosuchus
- Genus † Krabisuchus
- Genus † Navajosuchus?
- Genus † Procaimanoidea
- Genus † Wannaganosuchus
- Genus Alligator
- Subfamily Caimaninae
- Genus † Acresuchus
- Genus † Bottosaurus[14]
- Genus Caiman
- † Caiman brevirostris
- Caiman crocodilus, Spectacled caiman
- Caiman latirostris, Broad-snouted caiman
- † Caiman lutescans
- † Caiman venezuelensis
- † Caiman wannlangstoni
- Caiman yacare, Yacare caiman
- Genus † Centenariosuchus
- Genus † Chinatichampsus
- Genus † Culebrasuchus
- Genus † Eocaiman
- Genus † Globidentosuchus
- Genus † Gnatusuchus
- Genus † Kuttanacaiman
- Genus Melanosuchus
- † Melanosuchus fisheri
- Melanosuchus niger, Black caiman
- †
- Genus † Mourasuchus
- Genus † Necrosuchus
- Genus † Orthogenysuchus
- Genus Paleosuchus
- Paleosuchus palpebrosus, Cuvier's dwarf caiman
- Paleosuchus trigonatus, Smooth-fronted caiman
- Genus † Protocaiman
- Genus † Purussaurus
- Genus † Tsoabichi
- Subfamily Alligatorinae
References
- ^ Family Alligatoridae (Alligators and Caiman) Archived 2016-03-04 at the Wayback Machine University of Bristol. Quote:"The Alligatoridae appears in the Upper Cretaceous while the genus Alligator first occurs in the Oligocene."
- doi:10.1146/annurev.earth.31.100901.141308. Archived (PDF) from the original on 2022-10-09.[permanent dead link]
- ^ PMID 30051855.
- PMID 34567843.
- PMID 33907305.
- PMID 30135152.
- ^ S2CID 7254442.
- ^ .
- JSTOR 3889340.
- PMID 9402737.
- PMID 25504731.
- ^ "American alligator". animals.nationalgeographic.com. National Geographic Society.
- ISBN 978-0-7153-5272-4.
- .
External links
- "Crocodilians: Natural History & Conservation" Archived 2011-07-08 at the Wayback Machine crocodilian.com
- "Family Alligatoridae Gray 1844 (alligator)", fossilworks.org.
- Media related to Alligatoridae at Wikimedia Commons
- Data related to Alligatoridae at Wikispecies