Jacarea

Jacarea is a clade of caimans within the subfamily Caimaninae. Jacarea was first named by Norell in 1988 to include the extant species within the genera Caiman and Melanosuchus, while excluding the dwarf caiman genus Paleosuchus.^[1] In 1999, Brochu formally cladistically defined Jacarea as the last common ancestor of Caiman latirosris (Broad-snouted caiman), Caiman crocodilus (Spectacled caiman), Caiman yacare (Yacare caiman), Melanosuchus niger (Black caiman), and all its descendants.^[1] Molecular DNA phylogenetic studies recover Paleosuchus as outside of Jacarea, although morphological studies are inconsistent.^[1]

Jacarea Temporal range: Paleocene–Present, 66–0 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Yacare caiman, Caiman yacare
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Reptilia
Clade:	Archosauria
Order:	Crocodilia
Superfamily:	Alligatoroidea
Family:	Alligatoridae
Subfamily:	Caimaninae
Clade:	Jacarea Norell, 1988
Genera
Caiman Melanosuchus †Acresuchus †Centenariosuchus †Necrosuchus †Purussaurus

The cladogram below shows the results of the strict consensus phylogenetic analysis of the 2020 Cicade et al. study:^[2]

Caimaninae

†Culebrasuchus mesoamericanus †Gnatusuchus pebasensis †Globidentosuchus brachyrostris †Eocaiman palaeocenicus †Eocaiman itaboraiensis †Eocaiman cavernensis †Kuttanacaiman iquitosensis †Bottosaurus harlani †Tsoabichi greenriverensis Paleosuchus trigonatus Smooth-fronted caiman Paleosuchus palpebrosus Cuvier's dwarf caiman †Caiman gasparinae †Mourasuchus amazonensis †Mourasuchus pattersoni †Mourasuchus atopus †Mourasuchus arendsi Jacarea †Necrosuchus ionensis †UCMP 39978 †Caiman wannlangstoni †Centenariosuchus gilmorei †Caiman brevirostris Melanosuchus niger Black caiman Caiman latirostris Broad-snouted caiman Caiman yacare Yacare caiman Caiman crocodilus Spectacled caiman †Acresuchus pachytemporalis †Purussaurus neivensis †Purussaurus mirandai †Purussaurus brasiliensis