Sweetognathus | |
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Scientific classification | |
Kingdom: | |
Phylum: | |
Class: | |
(unranked): | |
Order: | |
Family: | |
Genus: | †Sweetognathus |
Species | |
|
Sweetognathus is an extinct genus of conodonts in the family Sweetognathidae that evolved at the beginning of the Permian period (298.9 Ma), in near-equatorial, shallow-water seas. [2]
The genus is characterized by pustulose ornamentation on a wide, flat-topped carina. It originated in the earliest Permian as S. expansus from Diplognathodus edentulus. [3]
Sweetognathus forms a species complex. [4]
The genus is named after paleontologist Walter C. Sweet.
It has been found that recurrent parallel species pairs have occurred throughout Sweetognathus evolution between populations originating in Bolivia, the Mid-Western Unitied States, and Russia. [2] Parallelisms have been found to occur in the denticle morphologies of their platform elements. [2]
According to the
List of Global Boundary Stratotype Sections and Points, the species Sweetognathus whitei made its first appearance during the
Artinskian (some 290.1 ± 0.26 mya), in the Permian of the
Ural mountains.
The species Sweetognathus merrelli is near first appearance during the
Sakmarian (some 295.0 ± 0.18 mya) in the Permian of
Kondurovsky,
Orenburg, Russia.
[5]
Sweetognathus | |
---|---|
Scientific classification | |
Kingdom: | |
Phylum: | |
Class: | |
(unranked): | |
Order: | |
Family: | |
Genus: | †Sweetognathus |
Species | |
|
Sweetognathus is an extinct genus of conodonts in the family Sweetognathidae that evolved at the beginning of the Permian period (298.9 Ma), in near-equatorial, shallow-water seas. [2]
The genus is characterized by pustulose ornamentation on a wide, flat-topped carina. It originated in the earliest Permian as S. expansus from Diplognathodus edentulus. [3]
Sweetognathus forms a species complex. [4]
The genus is named after paleontologist Walter C. Sweet.
It has been found that recurrent parallel species pairs have occurred throughout Sweetognathus evolution between populations originating in Bolivia, the Mid-Western Unitied States, and Russia. [2] Parallelisms have been found to occur in the denticle morphologies of their platform elements. [2]
According to the
List of Global Boundary Stratotype Sections and Points, the species Sweetognathus whitei made its first appearance during the
Artinskian (some 290.1 ± 0.26 mya), in the Permian of the
Ural mountains.
The species Sweetognathus merrelli is near first appearance during the
Sakmarian (some 295.0 ± 0.18 mya) in the Permian of
Kondurovsky,
Orenburg, Russia.
[5]