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Diagnostic Features
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- Test of medium size, ovate in outline, flattened above and below in profile; adoral surface rounded.
- Apical system subcentral, monobasal, with four gonopores.
- Petals well developed, open, anterior petal III longest, posterior pair (V & I) shortest. Pores strongly conjugate, equal number of pores in pores series in the same petal. Ambulacra beyond petals composed of primary plates and demiplates; demiplates small, thin, not reaching interior of test, absent near peristome.
- Peristome circular or pentagonal, central or subcentral, more or less flush.
- Periproct circular, inframarginal.
- Buccal pores present on edge of peristome.
- Tubercles small, irregularly arranged both adorally and adapically.
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Distribution
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Middle Eocene of the West Indies. |
| Name gender |
masculine |
| Type |
- Echinolampas ovum-serpentis Guppy, 1866, p. 300, pl. 19, figs. 4-6; by original designation.
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| Species Included |
Arnold & Clark (1927) included the following species when setting up this genus:
- P. altus Arnold & Clark, 1927; Middle Eocene, Jamaica.
- P. alvarezi Arnold & Clark, 1927; Middle Eocene, Jamaica, Cuba.
- P. convexus Arnold & Clark, 1927; Middle Eocene, Jamaica.
- P. cylindricus Arnold & Clark, 1927; Middle Eocene, Jamaica.
- P. elevatus Arnold & Clark, 1927; Middle Eocene, Jamaica.
- P. latus Arnold & Clark, 1927; Middle Eocene, Jamaica.
- P. ovumserpentis (Guppy, 1866); Upper Eocene, Trinidad.
- P. parvipetalus Arnold & Clark, 1927; Middle Eocene, Jamaica.
- P. platypetalus Arnold & Clark, 1927; Middle Eocene, Jamaica.
- P. pyramidoides Arnold & Clark, 1927; Middle Eocene, Jamaica.
- P. rotundus Arnold & Clark, 1927; Middle Eocene, Jamaica.
- P. rugosus Arnold & Clark, 1927; Middle Eocene, Jamaica.
- P. sternopetalus Arnold & Clark, 1927; Middle Eocene, Jamaica.
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| Classification and/or Status |
Irregularia; Neognathostomata; stem group Clypeasteroida; Oligopygidae
Subjective junior synonym of Haimea Michelin, 1851.
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| Remarks |
According to Kier (1967) Arnold & Clark (1927) were unaware of Michelin's Haimea when they erected their Pauropygus. They later (Arnold & Clark, 1934) considered Pauropygus a subjective junior synonym of Haimea Michelin, 1851, a view with which we agree.
Arnold, B. W. & Clark, H. L. 1927. Jamaican Fossil Echini; with descriptions of new species of Cainozoic Echinoidea by H. L. Hawkins. Memoirs of the Museum of Comparative Zoology 50 (1), 84 pp., 22 pls., 3 figs.
Arnold, B. W. & Clark, H. L. 1934. Some additional fossil Echini from Jamaica. Memoirs of the Museum of Comparative Zoology 54 (2), 139-156 pp., 5 pls.
Kier, P. M. 1967. Revision of the oligopygoid echinoids. Smithsonian miscellaneous collections 152 (2), 149 pp., 36 pls.
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