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Suuwassea
Taxonomy
Suuwassea was named by Harris and Dodson (2004). Its type is Suuwassea emilieae.
It was synonymized subjectively with Amphicoelias by Galiano and Albersdörfer (2010) and Galiano and Albersdörfer (2010).
It was assigned to Flagellicaudata by Harris and Dodson (2004), Harris (2006), Remes (2009) and González Riga et al. (2009); to Diplodocidae by Gallina and Apesteguía (2005), Rauhut et al. (2005), Chure et al. (2006), Remes (2006), Remes (2007) and Ksepka and Norell (2010); to Diplodocoidea by Ibiricu et al. (2012) and Xing et al. (2015); to Dicraeosauridae by Salgado et al. (2006), Whitlock (2011), Mannion et al. (2012), Tschopp and Mateus (2013), Tschopp et al. (2015) and Foster and Peterson (2016); and to Dicraeosauridae by Xu et al. (2018), Gallina et al. (2019), Mannion et al. (2019) and Whitlock and Wilson Mantilla (2020).
It was synonymized subjectively with Amphicoelias by Galiano and Albersdörfer (2010) and Galiano and Albersdörfer (2010).
It was assigned to Flagellicaudata by Harris and Dodson (2004), Harris (2006), Remes (2009) and González Riga et al. (2009); to Diplodocidae by Gallina and Apesteguía (2005), Rauhut et al. (2005), Chure et al. (2006), Remes (2006), Remes (2007) and Ksepka and Norell (2010); to Diplodocoidea by Ibiricu et al. (2012) and Xing et al. (2015); to Dicraeosauridae by Salgado et al. (2006), Whitlock (2011), Mannion et al. (2012), Tschopp and Mateus (2013), Tschopp et al. (2015) and Foster and Peterson (2016); and to Dicraeosauridae by Xu et al. (2018), Gallina et al. (2019), Mannion et al. (2019) and Whitlock and Wilson Mantilla (2020).
Species
S. emilieae (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2004 | Suuwassea Harris and Dodson p. 198 |
| 2005 | Suuwassea Gallina and Apesteguía p. 160 |
| 2005 | Suuwassea Rauhut et al. p. 672 fig. 2 |
| 2006 | Suuwassea Chure et al. p. 236 |
| 2006 | Suuwassea Harris p. 1092 |
| 2006 | Suuwassea Remes p. 664 fig. 9 |
| 2006 | Suuwassea Salgado et al. p. 704 fig. 9 |
| 2007 | Suuwassea Remes p. 663 fig. 7 |
| 2009 | Suuwassea González Riga et al. p. 139 |
| 2009 | Suuwassea Remes p. 34 |
| 2010 | Suuwassea Ksepka and Norell |
| 2011 | Suuwassea Whitlock |
| 2012 | Suuwassea Ibiricu et al. p. 227 |
| 2012 | Suuwassea Mannion et al. |
| 2013 | Suuwassea Tschopp and Mateus p. 877 fig. 11 |
| 2015 | Suuwassea Tschopp et al. |
| 2015 | Suuwassea Xing et al. |
| 2016 | Suuwassea Foster and Peterson p. 439 |
| 2018 | Suuwassea Xu et al. |
| 2019 | Suuwassea Gallina et al. p. 6 |
| 2019 | Suuwassea Mannion et al. |
| 2020 | Suuwassea Whitlock and Wilson Mantilla p. 21–22 |
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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 | |
|---|---|---|
| J. D. Harris and P. Dodson 2004 | Supraoccipital with ventral end drawn out into narrow, elongate process that contributes very little to dorsal margin of foramen magnum; basioccipital does not contribute to dorsal side of occipital condylar neck; antotic processes of laterosphenoid separated from frontals by deep notches; cranial cervical neural spines restricted to caudal halves of their respective centra, craniocaudally compressed, expanded distally, concave on all sides, and not bifurcate; distal caudal (“whiplash”) centra amphiplatyan; dorsal tuberculum of humerus well developed; proximal articular surface of tibia wider mediolaterally than long craniocaudally; calcaneus spheroidal; pedal phalanges longer proximodistally than wide mediolaterally. |
Body mass estimates
| estimate | equation | reference |
|---|---|---|
| 5.95 tons | Sauropoda humerus circumference | Anderson et al. 1985 |
Measurements
| part | N | mean | |||||
|---|---|---|---|---|---|---|---|
| fibula circumference | 1 | 240.0 | |||||
| humerus circumference | 1 | 402.0 | |||||
| tibia circumference | 1 | 371.0 |
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| Source: infrao = infraorder | |||||
| Reference: Marsh 1875 | |||||
Age range: Late/Upper Kimmeridgian or 155.70000 to 150.80000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Late/Upper Kimmeridgian | USA (Montana) | Diplodocoidea indet. (38866) |