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Hudsonelpidia
Taxonomy
Hudsonelpidia was named by McGowan (1995) [Sepkoski's age data: Tr Nori-l]. It is not extant.
It was assigned to Ichthyosauria by Sepkoski (2002); to Hudsonelpidiidae by McGowan and Motani (2003), Maisch (2010); and to Parvipelvia by Motani (1999), Maisch and Matzke (2000), Fischer et al. (2013), Ji et al. (2016).
It was assigned to Ichthyosauria by Sepkoski (2002); to Hudsonelpidiidae by McGowan and Motani (2003), Maisch (2010); and to Parvipelvia by Motani (1999), Maisch and Matzke (2000), Fischer et al. (2013), Ji et al. (2016).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1995 | Hudsonelpidia McGowan |
| 1999 | Hudsonelpidia Motani p. 482 |
| 2000 | Hudsonelpidia Maisch and Matzke pp. 71, 97 |
| 2002 | Hudsonelpidia Sepkoski |
| 2003 | Hudsonelpidia McGowan and Motani |
| 2010 | Hudsonelpidia Maisch |
| 2013 | Hudsonelpidia Fischer et al. |
| 2016 | Hudsonelpidia Ji et al. p. 11 |
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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 | |
|---|---|---|
| R. Motani 1999 | Manual zeugopodials much wider than long while pes zeugopodials much longer than wide; radiale without anterior notch; high, straight dorsal neural spines. | |
| M. W. Maisch and A. T. Matzke 2000 | "Small ichthyosaur, less than 2 m in length, snout short, orbits large, anterior neural spines very elongated, haemapophyses still ossified, spatium interosseum in forelimb reduced to foramen, fore- and hindfins at least tetradactyl, ischium and pubis elongate and slender, pubic foramen and notch entirely lost, tibia remains elongate." | |
| C. Ji et al. 2016 | Short snout; high, narrow dorsal neural spines; humerus slender, slightly longer than femur; iliac anteromedial prominence present; pubis triangular rather than plate-like and longer than wide; ischium plate-like, wider than pubis, and concave anteroposteriorly; posterior extent of fibula much posterior to femur. |
Measurements
No measurements are available
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| Source: o = order | |||||
| Reference: Kiessling 2004 | |||||
Age range: Norian or 228.00000 to 208.50000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Triassic | Canada (British Columbia) | H. brevirostris (174893) | |
| Norian | Canada (British Columbia) | H. sp. (144396) |