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Trisulcagnostus
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Agnostida
Superfamily:
Agnostoidea
Family:
Diplagnostidae
Formal Genus Name and Reference:
Trisulcagnostus ERGALIEV, 1980, p. 116
Type Species:
T. trisulcus, OD, holotype (Ergaliev, 1980, pl. 18, fig. 13), 1950/289, GMAN, Alma-Ata
Images
(Click to enlarge in a new window)
Fig. 233,6. *T. trisulcus ERGALIEV; Upper Cambrian (Batyrbaian, Trisulcagnostus trisulcus Zone), Kazakhstan (Lesser Karatau Mountains); holotype, cephalon, GMAN 1950/289, × 10.2 (Ergaliev, 1980, pl. 18, fig. 13).
Synonyms
Pseudagnostus
Geographic Distribution
China (Anhui, Hunan); Kazakhstan, E. scrobicularis to T. trisulcus Zones.
Age Range
Beginning Stage in Treatise Usage:
Upper Cambrian
Beginning International Stage:
Guzhangian
Fraction Up In Beginning Stage:
0
Beginning Date:
498.75
Ending Stage in Treatise Usage:
Upper Cambrian
Ending International Stage:
Cambrian Stage 10
Fraction Up In Ending Stage:
0
Ending Date:
486.85
Description
Like Rhaptagnostus, but with narrow borders and nondeliquiate border furrows, well-defined median preglabellar furrow, and additionally a pair of transverse furrows crossing cephalic acrolobe from axial furrow to border furrow at level of anterolateral lobes of posterior glabellar lobe, pointed anterior lobe, papilionate, pygidium unknown.
References
Museum or Author Information
Classification
Phylum:
Unknown
Class:
Trilobata
Order:
Agnostida
Superfamily:
Agnostoidea
Family:
Diplagnostidae
Formal Genus Name and Reference:
Trisulcagnostus ERGALIEV, 1980, p. 116
Type Species:
T. trisulcus, OD, holotype (Ergaliev, 1980, pl. 18, fig. 13), 1950/289, GMAN, Alma-Ata
Images
(Click to enlarge in a new window)
Fig. 233,6. *T. trisulcus ERGALIEV; Upper Cambrian (Batyrbaian, Trisulcagnostus trisulcus Zone), Kazakhstan (Lesser Karatau Mountains); holotype, cephalon, GMAN 1950/289, × 10.2 (Ergaliev, 1980, pl. 18, fig. 13).
Synonyms
Pseudagnostus
Geographic Distribution
China (Anhui, Hunan); Kazakhstan, E. scrobicularis to T. trisulcus Zones.
Age Range
Beginning Stage in Treatise Usage:
Upper Cambrian
Beginning International Stage:
Guzhangian
Fraction Up In Beginning Stage:
0
Beginning Date:
498.75
Ending Stage in Treatise Usage:
Upper Cambrian
Ending International Stage:
Cambrian Stage 10
Fraction Up In Ending Stage:
0
Ending Date:
486.85
Description
Like Rhaptagnostus, but with narrow borders and nondeliquiate border furrows, well-defined median preglabellar furrow, and additionally a pair of transverse furrows crossing cephalic acrolobe from axial furrow to border furrow at level of anterolateral lobes of posterior glabellar lobe, pointed anterior lobe, papilionate, pygidium unknown.