| Regulares (Regular)
Probably paraphylletic or polyphylletic group of archaeocyathids with regular shape of the skeleton.
| Regulares Vologdin, 1937 | | | | MŠ2478 | | Regulares Vologdin, 1937 | | | | MŠ2485 | | Regulares Vologdin, 1937 | | | | MŠ2488 | | Regulares Vologdin, 1937 | | | | MŠ2717 | | Regulares Vologdin, 1937 | | | | MŠ2404 | | Regulares Vologdin, 1937 | | | | MŠ2409 | | Regulares Vologdin, 1937 | | | | MŠ2413 | | Regulares Vologdin, 1937 | | | | MŠ2537 | | Regulares Vologdin, 1937 | | | | MŠ2352 | | Regulares Vologdin, 1937 | | | | MŠ2347 | | Regulares Vologdin, 1937 | | | | MŠ2505 | | Regulares Vologdin, 1937 | | | | MŠ2315 | | Regulares Vologdin, 1937 | | | | MŠ2446 | | Regulares Vologdin, 1937 | | | | MŠ2449 | | Regulares Vologdin, 1937 | | | | MŠ2450 | | Regulares Vologdin, 1937 | | | | MŠ2451 | | Regulares Vologdin, 1937 | | | | MŠ2453 | | Regulares Vologdin, 1937 | | | | MŠ2534 | | Regulares Vologdin, 1937 | | | | MŠ2524 | | Regulares Vologdin, 1937 | | | | MŠ2531 |
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