-
species is
Arctops willistoni. A
second species, A. watsoni, may be
synonymous with A. willistoni. A.
kitchingi may be a
third species of
Arctops, but it...
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Smilesaurus Arctops...
-
combination of both KI and SP bite elements. Even
bigger gorgonopsians, such as
Arctops, had a
shorter and more
convex snout like the
earlier sphenecodont Dimetrodon...
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Arctognathus Arctops Cynariops Eriphostoma Gorgonops Lycaenops Phorcys Smilesaurus Rubidgeinae...
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Smilesaurus Arctops...
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Smilesaurus Arctops...
- of the
clade considerably. Instead, it may be more
closely related to
Arctops, a
position supported by a
phylogenetic analysis in 2018.
Below is a cladogram...
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Smilesaurus Arctops...
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which included Aelurognathus, Aelurosaurus, Aloposaurus, Arctognathus,
Arctops, Cerdorhinus, Clelandina, Cyonosaurus, Dinogorgon, Gorgonops, Lycaenops...
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Smilesaurus Arctops...
