1. Distribution

2. Genera

3. Cladogram

4. References

5. Further reading

6. External links

Staffordiidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Staffordioidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Staffordiidae is the only family in the superamily Staffordioidea. This family has no subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Staffordiidae is a poorly understood^[2] family, because it occurs only in the Dafla Hills area of India. The fauna and flora of that area has not been researched sufficiently.^[2]

Various sources consider the family Staffordiidae as part of Dyakiidae^[2] or Ariophantidae/Dyakiinae.^[5]

Distribution

The distribution of the Staffordiidae includes only India in the Dafla Hills.^[2]

This area is close to northern margin of the Indian plate.^[2] The historical area of origin of the Staffordiidae has not been researched because the coastal area in southern Asia where it is found became uninhabitable^[2] after the Indian Plate and Eurasian Plate collided 50 to 55 million years ago. The original ancestral area of limacoid families is thought to be the Palaearctic region and south-eastern Asia.^[2] Thus, it has been hypothesized that the Staffordiidae colonized its current area from the southern margin of the Asian part of the Eurasian Plate during the Oligocene period.^[2]

Genera

Genera within the family Staffordiidae include:

• Staffordia Godwin-Austen, 1907^[11] - type genus of the family
  • Staffordia daflaensis (Godwin-Austen)^[3]
  • Staffordia staffordi Godwin-Austen, 1907^[3][11]
  • Staffordia toruputuensis Godwin-Austen^[3]

The generic name Staffordia is in honor of Brigadier-General Stafford,{{Who|date=September 2010}} who was in command of the punitive force which entered the Dafla Hills for the first time in the winter of 1874-1875.^[11]

The foot of Staffordia is pointed.^[11] The peripodial margin is simple with a narrow pale margin.^[11] There are small right and left shell-lobes.^[11]

The radula of Staffordia has aculeate lateral teeth.^[11]

Comparison of shells of three Staffordia species:

Cladogram

Staffordiidae is considered a sister group of all other families in the limacoid clade.^[2]

The following cladogram shows the phylogenic relationships of this family and superfamily to the other families within the limacoid clade:^[4]

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References

This article incorporates public domain text from the reference.^[5]

Further reading

• Schileyko A. A. (2003). "Treatise on recent terrestrial pulmonate mollusks. 10. Ariophantidae, Ostracolethaidae, Ryssotidae, Milacidae, Dyakiidae, Staffordiidae, Gastrodontidae, Zonitidae, Daudebardiidae, Parmacellidae". Ruthenica, Supplement 2. 1309-1466.

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