Armillifera
Armillifera parva is an Ediacaran marine animal, that existed on Earth about 555 million years ago.[1] It was first described by Mikhail Fedonkin in 1980. Its fossils were discovered in the White Sea area, Arkhangelsk Region, Russia. These fossils of A. Parva were restricted to almost the same stratigraphic range as the fossils of another creature , named Kimberella, but were rarely found.
| Armillifera Temporal range: Ediacaran | |
|---|---|
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| Artists interpretation of Armillifera parva. | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Genus: | †Armillifera Fedonkin, 1980 |
| Species: | †A. parva Fedonkin, 1980 |
| Binomial name | |
| †Armillifera parva Fedonkin, 1980 | |
Morphology
Armillifera is bilaterally symmetric, oval shaped animal from the Ediacaran period. It's convex ,which is in the center, possess a flattened
and surrounding band, and its surface is covered by numerous tubercles fused on the band to form rounded ridges. The surface of its central region possesses deep, hook-shaped depressions that are arranged accordingly to glide a reflection of billateral symmetry.[2]
Classification
The 'shell' of Armillifera possess a lack of a grow line, and the bilateral symmetry that Armillifera has suggested that it was likely to be an actively moving organisms in its environment.[2] The fact that the deep hook-shaped depressions in its central region are arranged accordingly to glide reflection symmetry, may refer its connection to Proarticulate. But the resemblance of the shell-like structure may not be the ultimate evidence to support that, so it's still unclear which phylum Armillifera belonged to.
See also
References
- "Fossilworks: Armillifera". fossilworks.org. Retrieved 17 December 2021.
- Ivantsov, A. Yu (2010-12-01). "Paleontological evidence for the supposed precambrian occurrence of mollusks". Paleontological Journal. 44 (12): 1552–1559. doi:10.1134/S0031030110120105. ISSN 1555-6174.