| Regulares (Regular)
Probably paraphylletic or polyphylletic group of archaeocyathids with regular shape of the skeleton.
| Regulares Vologdin, 1937 | | | | MŠ2353 | | Regulares Vologdin, 1937 | | | | MŠ2356 | | Regulares Vologdin, 1937 | | | | MŠ2357 | | Regulares Vologdin, 1937 | | | | MŠ2496 | | Regulares Vologdin, 1937 | | | | MŠ2497 | | Regulares Vologdin, 1937 | | | | MŠ2502 | | Regulares Vologdin, 1937 | | | | MŠ2503 | | Regulares Vologdin, 1937 | | | | MŠ2506 | | Regulares Vologdin, 1937 | | | | MŠ2512 | | Regulares Vologdin, 1937 | | | | MŠ2442 | | Regulares Vologdin, 1937 | | | | MŠ2443 | | Regulares Vologdin, 1937 | | | | MŠ2452 | | Regulares Vologdin, 1937 | | | | MŠ2514 | | Regulares Vologdin, 1937 | | | | MŠ2530 | | Regulares Vologdin, 1937 | | | | MŠ2419 | | Regulares Vologdin, 1937 | | | | MŠ2420 | | Regulares Vologdin, 1937 | | | | MŠ2426 | | Regulares Vologdin, 1937 | | | | MŠ2464 | | Regulares Vologdin, 1937 | | | | MŠ2474 | | Regulares Vologdin, 1937 | | | | MŠ2435 |
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