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Temporal range: Late Triassic
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Aetosauria
Family: Stagonolepididae
Subfamily: Typothoracisinae
Tribe: Paratypothoracisini
Parker, 2007

Paratypothoracisini is a clade of aetosaurs within the subfamily Aetosaurinae. It is a node-based taxon that includes Heliocanthus, Paratypothorax, Tecovasuchus, and all descendants of their most recent common ancestor. All synapomorphies that diagnose the clade can be found in the osteoderms. These include dorsal eminences of the paramedian plates that never or almost never contact the posterior margins of the plates and dorsoventrally flattened "horns" formed from the lateral spikes of the cervical and anterior dorsal regions.[1]


  1. ^ Parker, W. G. (2007). "Reassessment of the aetosaur ‘Desmatosuchus’ chamaensis with a reanalysis of the phylogeny of the Aetosauria (Archosauria:Pseudosuchia)". Journal of Systematic Palaeontology. 5: 41–68. doi:10.1017/S1477201906001994.