| Regulares (Regular)
Probably paraphylletic or polyphylletic group of archaeocyathids with regular shape of the skeleton.
| Regulares Vologdin, 1937 | | | | MŠ2499 | | Regulares Vologdin, 1937 | | | | MŠ2504 | | Regulares Vologdin, 1937 | | | | MŠ2510 | | Regulares Vologdin, 1937 | | | | MŠ2440 | | Regulares Vologdin, 1937 | | | | MŠ2441 | | Regulares Vologdin, 1937 | | | | MŠ2455 | | Regulares Vologdin, 1937 | | | | MŠ2526 | | Regulares Vologdin, 1937 | | | | MŠ2418 | | Regulares Vologdin, 1937 | | | | MŠ2461 | | Regulares Vologdin, 1937 | | | | MŠ2430 | | Regulares Vologdin, 1937 | | | | MŠ2431 | | Regulares Vologdin, 1937 | | | | MŠ2432 | | Regulares Vologdin, 1937 | | | | MŠ2481 | | Regulares Vologdin, 1937 | | | | MŠ2482 | | Regulares Vologdin, 1937 | | | | MŠ2397 | | Regulares Vologdin, 1937 | | | | MŠ2411 | | Regulares Vologdin, 1937 | | | | MŠ2355 | | Regulares Vologdin, 1937 | | | | MŠ2399 | | Regulares Vologdin, 1937 | | | | MŠ2400 | | Regulares Vologdin, 1937 | | | | MŠ2403 |
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