Monograptus
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| Monograptus Temporal range:
| |
|---|---|
| |
| Monograptus spiralis | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | Hemichordata |
| Class: | |
| Order: | Graptoloidea |
| Family: | |
| Genus: | Monograptus Geinitz, 1852
|
Monograptus is a genus of graptolites in the order
monophyletic
.
Biostratigraphic significance
The
Pridoli epoch, 423.0 ± 2.3 million years ago, of Monograptus turriculatus (together with the replacement of the brachiopod Eocoelia intermedia with E. curtisi) for the start of the Telychian, 438.5 ± 1.1 million years ago, and of Monograptus austerus sequens for the start of the Aeronian, 440.8 ± 1.2 million years ago, all stages of the Silurian
.
References
- ^ Gradstein, F. M. et al. ICS on Stage, page 5. Retrieved 2015-06-16.
External links
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