Palæos:

  

Unit 270: 
Archosauromorpha

The Vertebrates

300: Prolacertiformes

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Archosauromorpha: Prolacertiformes

Abbreviated Cladogram

REPTILOMORPHA
|--LEPIDOSAUROMORPHA
`--Archosauromorpha
   |--Rhynchosauria 
   `--+--Prolacertiformes
      `--Archosauriformes
         |--Euparkeriidae 
         `--Archosauria 
            |--Ornithodira
            |  |--PTEROSAURIA
            |  `--DINOSAUROMORPHA
            `--Crurotarsi
               |--Phytosauridae
               `--Rauisuchiformes
                  |--Rauisuchia
                  |  |--Ornithosuchidae 
                  |  `--+--Prestosuchidae
                  |     `--Rauisuchidae
                  `--Suchia 
                     |--Aetosauridae 
                     `--CROCODYLOMORPHA

Contents

270.000 Overview
270.100 Archosauromorpha
270.200 Rhynchosauria
270.300 Prolacertiformes
270.400 Archosauriformes
270.500 Archosauria
270.600 Rauisuchiformes
270.700 Derived Rauisuchia
270.800 Suchia (Aetosauridae)
270.900 Other Suchia
Cladogram
References

Taxa on This Page

  1. Prolacertiformes X

Descriptions

Prolacertiformes: Prolacerta, Tanystropheus. 

Range: Late Permian to Jurassic. 

Phylogeny: Archosauromorpha ::: Archosauriformes + *. 

Characters: Like early Lepidosauromorphs in reduction of temporal bar; squamosal reduced or ventral process that precludes streptostyly; agile terrestrial predators. Also includes Tanystropheus, with very long neck composed of only 6-7 vertebrae but twice length of trunk & relatively immobile, limbs poorly ossified; apparantly ate cephalopods. 

Links: tanyst; Nuova pagina 1.

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