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Lepidocystidae
Taxonomy
Lepidocystidae was named by Durham (1967). Its type is Lepidocystis.
It was assigned to Imbricata by Sprinkle (1973) and Fatka and Kordule (1990); and to Lepidocystoidea by Beaver et al. (1967) and Nardin et al. (2017).
It was assigned to Imbricata by Sprinkle (1973) and Fatka and Kordule (1990); and to Lepidocystoidea by Beaver et al. (1967) and Nardin et al. (2017).
Subtaxa
Synonymy list
Year | Name and author |
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1967 | Lepidocystidae Beaver et al. p. S634 |
1967 | Lepidocystidae Durham |
1973 | Lepidocystidae Sprinkle p. 60 |
1990 | Lepidocystidae Fatka and Kordule p. 315 |
2017 | Lepidocystidae Nardin et al. |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Fm. †Lepidocystidae Durham 1967
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Diagnosis
Reference | Diagnosis | |
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J. Sprinkle 1973 | Early eocrinoids with strongly differentiated oral and aboral plated surfaces. Aboral portion made up of a large conical calyx and a smaller, long or short, cylindrical, attachment holdfast, both having numerous adorally imbricating plates. Oral surface covers large adoral end of conical calyx and consists of large or small adjacent plates bearing numerous epispires (sutural pores). Ambulacral system confined to oral surface, consisting of a central covered mouth, 5 radially arranged ambulacral grooves depressed into the oral surface, and numerous biserial brachioles alternately arranged alongside each ambulacrum. Anal pyramid located at edge of oral surface in "CD" interradius; possible hydropore-gonopore combination located between it and mouth. Two genera; early Cambrian |
Measurements
No measurements are available
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Source: subp = subphylum, p = phylum | |||||
References: Bambach et al. 2007, Aberhan 1992 |
Collections (11 total)
Time interval | Ma | Country or state | Original ID and collection number |
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Dyeran | USA (Pennsylvania) | Lepidocystis wanneri (192 11110 90645 226193) Lepidocystis wanneri, Kinzercystis durhami (90622) | |
Dyeran - Delamaran | USA (Pennsylvania) | Lepidocystis sp. (226183) | |
Middle Cambrian | Czech Republic (Středočeský kraj) | Vyscystis ubaghsi (193781 201602) | |
Middle Cambrian | Czech Republic (Litavka) | Vyscystis sp. (76455) | |
Marjumian | Czech Republic (Středočeský) | Vyscystis ubaghsi (186256 186257) |