| Basic info | Taxonomic history | Classification | Included Taxa |
| Morphology | Ecology and taphonomy | External Literature Search | Age range and collections |
Losillasaurus
Taxonomy
Losillasaurus was named by Casanovas et al. (2001). Its type is Losillasaurus giganteus.
It was assigned to Macronaria by Gallina and Apesteguía (2005); to Diplodocoidea by Casanovas et al. (2001), Wilson (2002), Upchurch et al. (2004), Royo-Torres et al. (2007); to Eusauropoda by Whitlock (2011), Mannion et al. (2012); and to Turiasauria by Royo-Torres et al. (2006), Suñer et al. (2008), Canudo et al. (2010), Canudo et al. (2010), Vila et al. (2011), Mocho et al. (2014), Tschopp et al. (2015), Xing et al. (2015), Royo-Torres et al. (2017), Mannion et al. (2017), Mannion et al. (2019), Royo-Torres et al. (2021).
It was assigned to Macronaria by Gallina and Apesteguía (2005); to Diplodocoidea by Casanovas et al. (2001), Wilson (2002), Upchurch et al. (2004), Royo-Torres et al. (2007); to Eusauropoda by Whitlock (2011), Mannion et al. (2012); and to Turiasauria by Royo-Torres et al. (2006), Suñer et al. (2008), Canudo et al. (2010), Canudo et al. (2010), Vila et al. (2011), Mocho et al. (2014), Tschopp et al. (2015), Xing et al. (2015), Royo-Torres et al. (2017), Mannion et al. (2017), Mannion et al. (2019), Royo-Torres et al. (2021).
Species
L. giganteus (type species)
Synonymy list
| Year | Name and author |
|---|---|
| 2001 | Losillasaurus Casanovas et al. p. 109 fig. 1 |
| 2002 | Losillasaurus Wilson p. 249 |
| 2004 | Losillasaurus Upchurch et al. p. 265 |
| 2005 | Losillasaurus Gallina and Apesteguía p. 160 |
| 2006 | Losillasaurus Royo-Torres et al. p. 1927 |
| 2007 | Losillasaurus Royo-Torres et al. p. 184 |
| 2008 | Losillasaurus Suñer et al. p. 405 |
| 2010 | Losillasaurus Canudo et al. |
| 2010 | Losillasaurus Canudo et al. p. 167 |
| 2011 | Losillasaurus Vila et al. p. 135 |
| 2011 | Losillasaurus Whitlock |
| 2012 | Losillasaurus Mannion et al. |
| 2014 | Losillasaurus Mocho et al. |
| 2015 | Losillasaurus Tschopp et al. |
| 2015 | Losillasaurus Xing et al. |
| 2017 | Losillasaurus Mannion et al. |
| 2017 | Losillasaurus Royo-Torres et al. |
| 2019 | Losillasaurus Mannion et al. |
| 2021 | Losillasaurus Royo-Torres et al. pp. 219-220 |
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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. †Losillasaurus Casanovas et al. 2001
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†Losillasaurus giganteus Casanovas et al. 2001
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| R. Royo-Torres et al. 2021 | Losillasaurus is diagnosed by eight autapomorphies: (1) (new) lateral surface of the premaxilla and maxilla with dorsoventrally elongated grooves convergent with diplodocids and Nemegtosaurus (Mannion et al., 2019); (2) (new) a maxillary tooth with a secondary apex on the distal edge; (3) markedly curved neural spines of the proximal caudal vertebrae that in the first and second caudal vertebrae produce a pronounced cutlass-like shape in the lateral view (Casanovas et al., 2001; Upchurch et al., 2004a); (4) (new) presence of a dorsoventral ridge in the anterolateral surface of the spine at least between the fourth and tenthcaudal vertebrae (it is not clearly present in the first three caudal vertebrae and disappears in the 11th caudal vertebra); (5) (new) caudal neural spines with a shallow dorsal groove with directed anteroposteriorly, bigger in the anteriormost caudal vertebrae, especially in the first and second bones and shallow from the third to the 30th caudal vertebrae; (6) (new) the long-axis of the obturator foramen is perpendicular to the long-axis of the pubis; (7) (new) the lateral trochanter of the fibula is concave and rugose; and (8) (new) the tibial condyle of the femur is twice as large as the fibula condyle. |
Measurements
No measurements are available
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| Source: infrao = infraorder | |||||
| References: Kiessling 2004, Marsh 1875 | |||||
Age range: Late/Upper Kimmeridgian or 152.21000 to 149.20000 Ma
Collections (3 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Kimmeridgian - Tithonian | Spain (Teruel) | Turiasauria indet. (213533) | |
| Kimmeridgian - Tithonian | Spain (Valencia) | L. giganteus (39423) | |
| Late/Upper Kimmeridgian | Portugal (Centro) | Eusauropoda indet. (213534) |