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Paraconchidium
Taxonomy
Paraconchidium was named by Rong et al. (1974).
It was assigned to Virgianinae by Jin et al. (2006).
It was assigned to Virgianinae by Jin et al. (2006).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1974 | Paraconchidium Rong et al. |
| 2006 | Paraconchidium Jin et al. pp. 77 - 78 |
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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.
G. †Paraconchidium Rong et al. 1974
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†Paraconchidium shiqianensis Rong et al. 1974
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Jin et al. 2006 | Large, elongate, strongly ventribiconvex shells, thicker than wide, with high, rostrate ventral umbo; ventral and dorsal interareas well developed; fold and sulcus absent; narrow median groove usually present on both valves; delthyrium open. Spondylium broad V-shaped in cross section, one-half to two-thirds of shell length; median septum approximately one-third shell length. Inner hinge plates basomedially inclined towards valve floor, rarely united to form sessile cruralium; outer hinge plates slightly longer than inner hinge plates. Crura long, strong, rodlike, about same length as spondylium. |
Measurements
No measurements are available
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| Source: f = family, o = order, c = class, p = phylum, uc = unranked clade | |||||
| References: Aberhan et al. 2004, Hendy 2009, Nesnidal et al. 2013 | |||||
Age range: Aeronian or 440.80000 to 438.50000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Llandovery | China (Guizhou) | P. shiqianensis (27899) | |
| Aeronian | China (Guizhou) | P. shiqianensis (25815) |