| Regulares (Regular)
Probably paraphylletic or polyphylletic group of archaeocyathids with regular shape of the skeleton.
| Regulares Vologdin, 1937 | | | | MŠ2313 | | Regulares Vologdin, 1937 | | | | MŠ2444 | | Regulares Vologdin, 1937 | | | | MŠ2445 | | Regulares Vologdin, 1937 | | | | MŠ2448 | | Regulares Vologdin, 1937 | | | | MŠ2456 | | Regulares Vologdin, 1937 | | | | MŠ2532 | | Regulares Vologdin, 1937 | | | | MŠ2516 | | Regulares Vologdin, 1937 | | | | MŠ2525 | | Regulares Vologdin, 1937 | | | | MŠ2529 | | Regulares Vologdin, 1937 | | | | MŠ2414 | | Regulares Vologdin, 1937 | | | | MŠ2460 | | Regulares Vologdin, 1937 | | | | MŠ2421 | | Regulares Vologdin, 1937 | | | | MŠ2425 | | Regulares Vologdin, 1937 | | | | MŠ2466 | | Regulares Vologdin, 1937 | | | | MŠ2471 | | Regulares Vologdin, 1937 | | | | MŠ2472 | | Regulares Vologdin, 1937 | | | | MŠ2475 | | Regulares Vologdin, 1937 | | | | MŠ2487 | | Regulares Vologdin, 1937 | | | | MŠ2491 | | Regulares Vologdin, 1937 | | | | MŠ2493 |
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