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| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Taxonomy
Papiliophyllum was named by Stumm (1937) [Sepkoski's age data: D Emsi D Fras-u Sepkoski's reference number: 680]. It is not extant.
It was assigned to Halliinae by Hill (1956); to Papiliophyllinae by Merriam (1974), Hill (1981); and to Rugosa by Sepkoski (2002).
It was assigned to Halliinae by Hill (1956); to Papiliophyllinae by Merriam (1974), Hill (1981); and to Rugosa by Sepkoski (2002).
Species
Synonymy list
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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.
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| C. W. Merriam 1974 | Solitary trochoid and ceratoid Hallii- dae which grow to a large size have a deep flowerpot- shaped, rather flat-bottomed calice with a cardinal fossula. Peripheral zone has medium to large steeply inclined lonsdaleioid dissepiments. Septa of cardinal quadrants are thickened in all the ephebic stages and are laterally in contact in all the early ephebic stages. Most septa are withdrawn from the axis and terminate peripherally at the inner margin of the lonsdaleioid dissepimentarium. Minor septa are either suppressed or inconspicuous as short discontinuous crests. In the neanic stages the cardinal septum is short within the fossula which is bordered by thick septa touching lat- erally. Tabulae are mostly complete, wide, close to rather widely spaced, and distally arched; in normal mature stages tabulae are rather flat to slightly sag- ging axially and periaxially and are peripherally de- pressed. Some individuals have tabulae that are rather irregular and sharply arched distally in the neanic stages. Tabulae are bent sharply downward, funnellike at the cardinal fossula. Septa of the counter quad- rants become thinned and lonsdaleioid dissepiments develop in the early to mid-neanic stages; the cardinal quadrants are bordered by lonsdaleioid dissepiments externally until late neanic or early ephebic stages. |
Measurements
No measurements are available
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| Source: o = order, c = class | |||||
| Reference: Kiessling 2004 | |||||
Collections (12 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Helderbergian | USA (Nevada) | P. sp. (596) | |
| Pragian | Russian Federation (Arkhangel'skaya Oblast') | P. bondarevi (40700) | |
| Early/Lower Emsian | USA (Nevada) | P. murphyi (90943) | |
| Emsian | Spain (Castilla-León) | P. lissingenense (80638) | |
| Emsian | Spain (Asturias) | P. sp. (25292) | |
| Emsian | USA (California) | P. elegantulum (225991 225992) | |
| Late/Upper Emsian | USA (California) | P. elegantulum (225967 225995) | |
| Late/Upper Emsian | Spain (Leon) | P. sp. (26136) | |
| Late/Upper Emsian - Eifelian | Spain (Leon) | P. sp. (26394) | |
| Eifelian | Spain (Castilla-León) | P. sp. (80639) |