| Regulares (Regular)
Probably paraphylletic or polyphylletic group of archaeocyathids with regular shape of the skeleton.
| Regulares Vologdin, 1937 | | | | MŠ2392 | | Regulares Vologdin, 1937 | | | | MŠ6048 | | Regulares Vologdin, 1937 | | | | MŠ2495 | | Regulares Vologdin, 1937 | | | | MŠ2501 | | Regulares Vologdin, 1937 | | | | MŠ2508 | | Regulares Vologdin, 1937 | | | | MŠ2509 | | Regulares Vologdin, 1937 | | | | MŠ2437 | | Regulares Vologdin, 1937 | | | | MŠ2454 | | Regulares Vologdin, 1937 | | | | MŠ2515 | | Regulares Vologdin, 1937 | | | | MŠ2523 | | Regulares Vologdin, 1937 | | | | MŠ2527 | | Regulares Vologdin, 1937 | | | | MŠ2458 | | Regulares Vologdin, 1937 | | | | MŠ2422 | | Regulares Vologdin, 1937 | | | | MŠ2469 | | Regulares Vologdin, 1937 | | | | MŠ2470 | | Regulares Vologdin, 1937 | | | | MŠ2480 | | Regulares Vologdin, 1937 | | | | MŠ2492 | | Regulares Vologdin, 1937 | | | | MŠ2401 | | Regulares Vologdin, 1937 | | | | MŠ2349 | | Regulares Vologdin, 1937 | | | | MŠ2350 |
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