| Regulares (Regular)
Probably paraphylletic or polyphylletic group of archaeocyathids with regular shape of the skeleton.
| Regulares Vologdin, 1937 | | | | MŠ2407 | | Regulares Vologdin, 1937 | | | | MŠ2410 | | Regulares Vologdin, 1937 | | | | MŠ2412 | | Regulares Vologdin, 1937 | | | | MŠ2539 | | Regulares Vologdin, 1937 | | | | MŠ2344 | | Regulares Vologdin, 1937 | | | | MŠ2498 | | Regulares Vologdin, 1937 | | | | MŠ2500 | | Regulares Vologdin, 1937 | | | | MŠ2513 | | Regulares Vologdin, 1937 | | | | MŠ2427 | | Regulares Vologdin, 1937 | | | | MŠ2476 | | Regulares Vologdin, 1937 | | | | MŠ2477 | | Regulares Vologdin, 1937 | | | | MŠ2695 | | Regulares Vologdin, 1937 | | | | MŠ2479 | | Regulares Vologdin, 1937 | | | | MŠ2484 | | Regulares Vologdin, 1937 | | | | MŠ2490 | | Regulares Vologdin, 1937 | | | | MŠ2312 | | Regulares Vologdin, 1937 | | | | MŠ2457 | | Regulares Vologdin, 1937 | | | | MŠ2533 | | Regulares Vologdin, 1937 | | | | MŠ2415 | | Regulares Vologdin, 1937 | | | | MŠ2428 |
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