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Tastavinsaurus sanzi
Taxonomy
Tastavinsaurus sanzi was named by Canudo et al. (2008). Its type specimen is MPZ 99/9, a set of postcrania, and it is a 3D body fossil. Its type locality is Arsis-1, Peñarroya de Tastavins, which is in an Aptian coastal claystone in the Xert Formation of Spain.
Synonymy list
| Year | Name and author |
|---|---|
| 2008 | Tastavinsaurus sanzi Canudo et al. p. 713 figs. 2-18 |
| 2009 | Tastavinsaurus sanzi Luque et al. p. 161 |
| 2011 | Tastavinsaurus sanzi Le Loeuff et al. p. 36 |
| 2011 | Tastavinsaurus sanzi Vila et al. p. 143 |
| 2012 | Tastavinsaurus sanzi D'Emic |
| 2012 | Tastavinsaurus sanzi Néraudeau et al. p. 10 |
| 2012 | Tastavinsaurus sanzi Royo-Torres et al. p. 65 |
| 2013 | Tastavinsaurus sanzi Castanera et al. p. 15 |
| 2013 | Tastavinsaurus sanzi Torcida Fernández-Baldor et al. p. 131 |
| 2014 | Tastavinsaurus sanzi Mocho et al. |
| 2015 | Tastavinsaurus sanzi Cerda et al. p. 14 |
| 2016 | Tastavinsaurus sanzi Mocho et al. p. 98 |
| 2020 | Tastavinsaurus sanzi Poropat et al. p. 19 |
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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.
†Tastavinsaurus sanzi Canudo et al. 2008
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. I. Canudo et al. 2008 | Tastavinsaurus sanzi gen. et sp. nov. is characterized by 19 autapomorphic traits: (1) the caudalmost thoracic vertebra possesses a postspinal process with two small accessory laminae at its base; (2) the accessory lamina that joins the spinoprezygapophyseal with the spinodiapophyseal or spinopostzygapophyseal laminae bounds an oval depression at the dorsal end of the spinous process in caudalmost thoracic vertebra; (3) the interior of the thoracic vertebral body is constructed by big prismatic tubes linked together by slender walls and exhibits a honeycomb pattern in cross-section; (4) the sacricostal yoke is ventrolateral to the vertebral bodies; (5) the sacral ribs are mediolaterally short; (6) the sacral ribs are separated from the caudosacral vertebral body ventrally by a deep notch; (7) postspinal fossae, bounded by the caudal zygapophyses and the spinopostzygapophyseal lamina, are present on the first eight caudal vertebrae; (8) the first caudal vertebra has a short axial lamina between the postzygapophyses; (9) the proximal caudal vertebrae have short axial laminae between their prezygapophyses; (10) there are rounded bumps on both articular faces of the mid-distal caudal vertebrae; (11) the ischium:pubis length ratio is 0.70; (12) the cranioventral corner of the distal extremity of the pubis is acute; (13) the lateral end of the cnemial crest of the tibia splits into two thin vertical crests separated by a shallow, wide groove; (14) in profile, the proximal end of the fibula is crescentic; (15) the cranial trochanter of the fibula is well developed, and forms a crest that projects craniomedially; (16) metatarsal I has a robustness index value of 1.0; (17) the area of the proximal end of metatarsal II is 30% greater than that of metatarsal I; (18) metatarsals I and II both possess pronounced superolateral projections; and (19) the proximal end of metatarsal V is greatly expanded (three times the width of the distal end). | |
| R. Royo-Torres et al. 2012 | (1) The caudalmost thoracic vertebra possesses a postspinal process with two small accessory laminae at its base. (2) The accessory lamina that joins the spinoprezygapophyseal with the spinodiapophyseal or spinopostzygapophyseal laminae bounds an oval depression at the dorsal end of the spinous process in the caudalmost thoracic vertebra. (3) The sacricostal yoke is ventrolateral to the vertebral bodies. (4) The sacral ribs are mediolaterally short. (5) The sacral ribs are separated from the caudosacral vertebral body ventrally by a deep notch. (6) The first caudal vertebra has a short axial lamina between the postzygapophyses. (7) The proximal caudal vertebrae have short axial laminae between their prezygapophyses. (8) There are rounded bumps on both articular faces of the mid-distal caudal vertebrae. (9) The ischium/pubis length ratio is <0.70. (10) The angle of the cranioventral corner of the distal extremity of the pubis is acute. (11) The tibia are short (55% of the length of the femur). (12) The lateral end of the cnemial crest of the tibia splits into two thin vertical crests separated by a shallow depression. (13) In profile, the proximal end of the fibula is crescentic. (14) The cranial trochanter of the fibula is well developed and forms a crest that projects craniomedially. (15) The distal end of the fibula is subquadrangular. (16) Metatarsal I has a robustness index value of 1.0 (0.97). (17) The area of the proximal end of metatarsal II is 30% greater than that of metatarsal I. (18) Metatarsals I and II both possess pronounced superolateral projections. (19) The proximal end of metatarsal V is greatly expanded (three times the width of the distal end). |
Measurements
No measurements are available
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| Source: infrao = infraorder | |||||
| References: Kiessling 2004, Marsh 1875 | |||||
Age range: Early/Lower Aptian or 121.40000 to 119.57000 Ma
Collections (2 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Aptian | Spain (Aragón) | Sauropoda indet. (type locality: 58204 123283) |