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Clade
Subclade
Archosauria: Crurotarsi to Crocodylia
Taxon
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Taxon
Prestosuchidae
Nominal Author
Romer 1966
2° Nominal Author
Taxon Status
active
inactive
Comments
The active and initial definition for Prestosuchidae identifies a clade with the nominotypical species
Prestosuchus
chiniquensis
as an internal specifier. Several external specifiers (
Rauisuchus
tiradentes
,
Aetosaurus
ferratus
,
Poposaurus
gracilis
,
Crocodylus
niloticus
) ensure that only taxa most closely related to
Prestosuchus
will be included.
Potential Synonomy
Active Phylogenetic Definition
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Active Definition
The most inclusive clade containing
Prestosuchus
chiniquensis
Huene 1942 but not
Rauisuchus
tiradentes
Huene 1942,
Aetosaurus
ferratus
Fraas 1877,
Poposaurus
gracilis
Mehl 1915,
Crocodylus
niloticus
(Laurenti 1768).
Shorthand
>
Prestosuchus
chiniquensis
but not
Rauisuchus
triradentes,
Aetosaurus
ferratus
,
Poposaurus
gracilis
,
Crocodylus
niloticus
.
Definitional Author
Sereno 2005
Definition Status
original
textual substitution
first-order revision
second-order revision
Definition Type
node
stem
Node-Stem Triplet
yes
no
Other Triplet Taxa
Specifiers
Specifier A
Prestosuchus
chiniquensis
Specifier(s) B
Specifier(s) C
Rauisuchus
triradentes,
Aetosaurus
ferratus
,
Poposaurus
gracilis
,
Crocodylus
niloticus
.
Qualifiers
+Taxon
-Taxon
Datum
Taxonomic Content
stem (entirely extinct)
crown (extant-bounded)
mixed (extant/extinct-bounded)
Publication Year
2005
Inactive Taxon Status
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Rejection Criteria
junior synonym
historically polyphyletic
incomplete definition
no definition
apomorphy-based
redundant
other
Critique
Current Age Range
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Earliest Record
Anisian (245 Ma)
Latest Record
Carnian (217 Ma)
Range (My)
28
Basis for Range
The earliest record is
Ticinosuchus
ferox
from Anisian-age beds in Germany (Krebs 1965). The latest record is
Prestosuchus
chiniquensis from the Carnian-age Santa Maria Formation (Barbarena 1978). Dates are rounded to the nearest million, the earliest from the beginning of the stage and the latest from the end of the stage (Gradstein et al. 2004).
Additional Definitional History:
None Available
