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Orbiculoidea semipolita
Taxonomy
Discina semipolita was named by Whiteaves (1884).
It was recombined as Orbiculoidea semipolita by Crickmay (1933).
It was recombined as Orbiculoidea semipolita by Crickmay (1933).
Sister species lacking formal opinion data
O. baini, O. bodenbenderi, O. cellulosa, O. collis, O. convexa, O. davreuxiana, O. discoides, O. doria, O. elongata, O. eximia, O. falklandensis, O. grandis, O. hartii, O. herzeri, O. inaequalis, O. inaequalis, O. intermedia, O. kadzielniensis, O. katzeri, O. lamellosa, O. latissima, O. limata, O. lodensis, O. lodiensis, O. lodiensis, O. meekana, O. molina, O. montis, O. moorefieldana, O. newberryi, O. numulus, O. pelopea, O. pilidium, O. portlocki, O. portlockiana, O. rugata, O. schallochensis, O. sinensis, O. sodalis, O. squammosa, O. subcircularis, O. subplana, O. tarda, O. telleri, O. tenuistriata, O. tenulineata, O. tornacensis, O. townshendi, O. truncata, O. tullia, O. vanuxemi, O. wardi, O. yichangensis
Synonymy list
| Year | Name and author |
|---|---|
| 1884 | Discina semipolita Whiteaves p. 252 figs. Pl. 33, Fig. 9 |
| 1933 | Orbiculoidea semipolita Crickmay p. 873 |
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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.
†Orbiculoidea semipolita Whiteaves 1884
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
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| Source: g = genus, o = order, c = class, uc = unranked clade | |||||
| References: Hendy 2009, Nesnidal et al. 2013, Aberhan et al. 2004 | |||||
Age range: Early/Lower Pliensbachian or 192.90000 to 184.20000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Pliensbachian | Canada (British Columbia) | Orbiculoidea semipolita (164635) |