| Regulares (Regular)
Probably paraphylletic or polyphylletic group of archaeocyathids with regular shape of the skeleton.
| Regulares Vologdin, 1937 | | | | MŠ2416 | | Regulares Vologdin, 1937 | | | | MŠ2459 | | Regulares Vologdin, 1937 | | | | MŠ2462 | | Regulares Vologdin, 1937 | | | | MŠ2423 | | Regulares Vologdin, 1937 | | | | MŠ2433 | | Regulares Vologdin, 1937 | | | | MŠ2467 | | Regulares Vologdin, 1937 | | | | MŠ2468 | | Regulares Vologdin, 1937 | | | | MŠ2483 | | Regulares Vologdin, 1937 | | | | MŠ2486 | | Regulares Vologdin, 1937 | | | | MŠ2489 | | Regulares Vologdin, 1937 | | | | MŠ2406 | | Regulares Vologdin, 1937 | | | | MŠ2351 | | Regulares Vologdin, 1937 | | | | MŠ2358 | | Regulares Vologdin, 1937 | | | | MŠ2395 | | Regulares Vologdin, 1937 | | | | MŠ2348 | | Regulares Vologdin, 1937 | | | | MŠ2345 | | Regulares Vologdin, 1937 | | | | MŠ2507 | | Regulares Vologdin, 1937 | | | | MŠ2731 | | Regulares Vologdin, 1937 | | | | MŠ2436 | | Regulares Vologdin, 1937 | | | | MŠ2438 |
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