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Lepidocystidae
Taxonomy
Lepidocystidae was named by Durham (1967). Its type is Lepidocystis.
It was assigned to Imbricata by Sprinkle (1973), Fatka and Kordule (1990); and to Lepidocystoidea by Beaver et al. (1967), Nardin et al. (2017).
It was assigned to Imbricata by Sprinkle (1973), Fatka and Kordule (1990); and to Lepidocystoidea by Beaver et al. (1967), Nardin et al. (2017).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 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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G. †Vyscystis Fatka and Kordule 1990
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†Vyscystis spinosa Wang et al. 2024
†Vyscystis ubaghsi Fatka and Kordule 1990
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| 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: Aberhan 1992, Bambach et al. 2007 | |||||
Collections (13 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Series 2 | China (Jiangsu) | Vyscystis spinosa (235095 235096) | |
| Dyeran | USA (Pennsylvania) | Lepidocystis wanneri (192 11110 90645 226193) Lepidocystis wanneri, Kinzercystis durhami (90622) | |
| Dyeran - Delamaran | USA (Pennsylvania) | Lepidocystis sp. (226183) | |
| Middle Cambrian | Czechia (Středočeský kraj) | Vyscystis ubaghsi (193781 201602) | |
| Middle Cambrian | Czechia (Litavka) | Vyscystis sp. (76455) | |
| Marjumian | Czechia (Středočeský) | Vyscystis ubaghsi (186256 186257) |