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| Classement: | Species |
|
|---|---|---|
| mère: | Asperina Ostroumoff, 1896 | |
| Nom spécifique: | improvisa | |
| paternité: | Ostroumoff | |
| Publication: | Zwei neue Relicten-Gattungen im Azow’schen Meere. Zoologischer Anzeiger 19: 30. | |
| Page: | 30 | |
| Figure(s): | ||
| Spécimen type (s): | ||
| Localité type: | ||
| Fossile: | No | |
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