Anabarella Temporal range:
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Scientific classification
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Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | † Helcionelloida |
Order: | † Helcionelliformes |
Family: | † Helcionellidae |
Genus: | † Anabarella |
Species | |
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Synonyms | |
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Anabarella is a species of bilaterally-flattened monoplacophoran mollusc, [2] with a morphological similarity to the rostroconchs. [3] Its shell preserves evidence of three mineralogical textures on its outer surface: it is polygonal near the crest of the shell, subsequently changing to both spiny and stepwise. [3] Its internal microstructure is calcitic and semi-nacreous. [4] Its name reflects its provenance from Anabar, Siberia. [3] It has been interpreted as ancestral to the rostroconchs, [5] and has been aligned to the Helcionellidae. [2]
The genus is closely related to Watsonella, with which it bears many morphological similarities, [3] including a laminar internal shell microstructure said to connect it with the early bivalves Fordilla and Pojetaia. [6]
Anabarella Temporal range:
| |
---|---|
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | † Helcionelloida |
Order: | † Helcionelliformes |
Family: | † Helcionellidae |
Genus: | † Anabarella |
Species | |
| |
Synonyms | |
|
Anabarella is a species of bilaterally-flattened monoplacophoran mollusc, [2] with a morphological similarity to the rostroconchs. [3] Its shell preserves evidence of three mineralogical textures on its outer surface: it is polygonal near the crest of the shell, subsequently changing to both spiny and stepwise. [3] Its internal microstructure is calcitic and semi-nacreous. [4] Its name reflects its provenance from Anabar, Siberia. [3] It has been interpreted as ancestral to the rostroconchs, [5] and has been aligned to the Helcionellidae. [2]
The genus is closely related to Watsonella, with which it bears many morphological similarities, [3] including a laminar internal shell microstructure said to connect it with the early bivalves Fordilla and Pojetaia. [6]