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Lewisuchus
Taxonomy
Lewisuchus was named by Romer (1972). It is the type genus of Lewisuchinae. It was considered monophyletic by Nesbitt (2011).
It was assigned to Pseudosuchia by Romer (1972), Romer (1972); to Sphenosuchidae by Bonaparte (1978); to Gracilisuchidae by Carroll (1988); to Lewisuchinae by Paul (1988); to Suchia by Parrish (1993); to Dinosauriformes by Arcucci (1997), Bittencourt et al. (2014); to Ornithischia by Müller and Garcia (2020); and to Silesauridae by Nesbitt et al. (2010), Nesbitt (2011), Kammerer et al. (2012), Martínez et al. (2016), Martz and Small (2019), Ezcurra et al. (2020), Fonseca et al. (2024).
It was assigned to Pseudosuchia by Romer (1972), Romer (1972); to Sphenosuchidae by Bonaparte (1978); to Gracilisuchidae by Carroll (1988); to Lewisuchinae by Paul (1988); to Suchia by Parrish (1993); to Dinosauriformes by Arcucci (1997), Bittencourt et al. (2014); to Ornithischia by Müller and Garcia (2020); and to Silesauridae by Nesbitt et al. (2010), Nesbitt (2011), Kammerer et al. (2012), Martínez et al. (2016), Martz and Small (2019), Ezcurra et al. (2020), Fonseca et al. (2024).
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1972 | Lewisuchus Romer p. 2 figs. 1-8 |
| 1978 | Lewisuchus Bonaparte p. 297 |
| 1987 | Pseudolagosuchus Arcucci |
| 1988 | Lewisuchus Carroll |
| 1988 | Lewisuchus Paul p. 242 |
| 1988 | Pseudolagosuchus Paul p. 244 |
| 1989 | Pseudolagosuchus Novas p. 680 |
| 1991 | Pseudolagosuchus Olshevsky p. 103 |
| 1991 | Pseudolagosuchus Sereno p. 23 |
| 1992 | Pseudolagosuchus Novas p. 59 fig. 6 |
| 1993 | Lewisuchus Parrish p. 290 fig. 1 |
| 1996 | Pseudolagosuchus Novas p. 737 fig. 10 |
| 1997 | Lewisuchus Arcucci p. 181 |
| 1997 | Pseudolagosuchus Arcucci p. 181 |
| 2006 | Pseudolagosuchus Ezcurra p. 657 fig. 3 |
| 2007 | Pseudolagosuchus Irmis et al. p. 361 |
| 2009 | Pseudolagosuchus Martínez and Alcober p. 1 |
| 2010 | Lewisuchus Nesbitt et al. p. 97 |
| 2010 | Pseudolagosuchus Nesbitt et al. p. 97 |
| 2011 | Lewisuchus Nesbitt fig. 52 |
| 2011 | Pseudolagosuchus Nesbitt |
| 2012 | Lewisuchus Kammerer et al. pp. 281-282 fig. 4 |
| 2014 | Lewisuchus Bittencourt et al. p. 190 |
| 2016 | Lewisuchus Martínez et al. p. 8 fig. 4 |
| 2019 | Lewisuchus Martz and Small p. 54 fig. 23 |
| 2019 | Pseudolagosuchus Martz and Small p. 54 fig. 23 |
| 2020 | Lewisuchus Ezcurra et al. p. 1397 |
| 2020 | Lewisuchus Müller and Garcia p. 3 fig. 1 |
| 2024 | Lewisuchus Fonseca et al. |
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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. †Lewisuchus Romer 1972
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Invalid names: Pseudolagosuchus Arcucci 1987 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. S. Bittencourt et al. 2014 | As for type and only species. |
Measurements
No measurements are available
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| Source: o = order | |||||
| References: Kiessling 2004, Marsh 1875 | |||||
Age range: base of the Longobardian to the top of the Ladinian or 239.48000 to 237.00000 Ma
Collections (4 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Ladinian | Argentina (La Rioja) | L. admixtus (13271) Pseudolagosuchus major (105535) | |
| Longobardian - Julian | Argentina (La Rioja) | L. admixtus (205839) | |
| Longobardian - Judithian | Argentina (La Rioja) | Pseudolagosuchus major (26092) |