PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Machaeroprosopus

Reptilia - Parasuchidae

Taxonomy

Machaeroprosopus was named by Mehl (1916). Its type is Machaeroprosopus andersoni.

It was synonymized subjectively with Phytosaurus by Case (1922); it was synonymized subjectively with Rutiodon by Kuhn (1964).

It was assigned to Phytosauria by Mehl (1916); to Mystriosuchidea by Huene (1922); to Phytosauridae by Hay (1930); to Pseudopalatinae by Hungerbühler et al. (2013), Stocker and Butler (2013) and Parker et al. (2013); and to Mystriosuchini by Kammerer et al. (2016).

Species

M. andersoni (type species), M. buceros, M. jablonskiae, M. lottorum, M. mccauleyi, M. pristinus, M. tenuis, M. validus, Pseudopalatus maccauleyi, Redondasaurus bermani, Redondasaurus gregorii

Synonyms

Redondasaurus was named by Hunt and Lucas (1993). Its type is Redondasaurus gregorii.

It was synonymized subjectively with Machaeroprosopus by Hungerbühler et al. (2013).

It was assigned to Parasuchia by Lucas et al. (1997); to Parasuchidae by Hunt and Lucas (1993) and Spielmann and Lucas (2012); and to Pseudopalatinae by Stocker and Butler (2013).
Arribasuchus was named by Long and Murry (1995).

It was synonymized subjectively with Pseudopalatus by Hungerbühler (2002), Zeigler et al. (2002) and Irmis (2005); it was synonymized subjectively with Machaeroprosopus by Hungerbühler et al. (2013) and Parker et al. (2013).

It was assigned to Pseudopalatinae by Long and Murry (1995).
Pseudopalatus was named by Mehl (1928). Its type is Pseudopalatus pristinus. It was considered paraphyletic by Stocker (2010) and monophyletic by Nesbitt (2011).

It was synonymized subjectively with Rutiodon by Kuhn (1964); it was synonymized subjectively with Machaeroprosopus by Hungerbühler et al. (2013) and Parker et al. (2013).

It was assigned to Phytosauridae by Hay (1930); to Pseudopalatinae by Long and Murry (1995) and Parker and Irmis (2006); to Pseudopalatinae by Stocker (2010); and to Phytosauria by Nesbitt (2011).

Synonymy list

Year	Name and author
1916	Machaeroprosopus Mehl
1922	Machaeroprosopus Huene p. 23
1928	Pseudopalatus Mehl p. 7
1930	Machaeroprosopus Hay p. 143
1930	Pseudopalatus Hay p. 143
1993	Redondasaurus Hunt and Lucas p. 193
1995	Arribasuchus Long and Murry
1995	Pseudopalatus Long and Murry p. 74
1997	Redondasaurus Lucas et al.
2006	Pseudopalatus Parker and Irmis
2010	Pseudopalatus Stocker p. supplement
2011	Pseudopalatus Nesbitt p. 193 fig. 51
2012	Redondasaurus Spielmann and Lucas
2013	Machaeroprosopus Hungerbühler et al.
2013	Machaeroprosopus Parker et al.
2013	Machaeroprosopus Stocker and Butler
2013	Redondasaurus Stocker and Butler
2016	Machaeroprosopus Kammerer et al.

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
—	Osteichthyes	()
subclass	Sarcopterygii	()
subclass	Dipnotetrapodomorpha	(Nelson 2006)
subclass	Tetrapodomorpha	()
—	Tetrapoda
—	Reptiliomorpha
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota

Rank	Name	Author
—	Sauropsida
class	Reptilia
subclass	Eureptilia	()
—	Romeriida
—	Diapsida	()
—	Archosauromorpha	(Huene 1946)
—	Crocopoda
—	Archosauriformes	Gauthier 1986
—	Eucrocopoda
—	Archosauria	()
—	Pseudosuchia	(Zittel 1890)
—	Phytosauria	(Jaeger 1828)
family	Parasuchidae	Lydekker 1885
subfamily	Mystriosuchinae	von Huene 1915
—	Leptosuchomorpha
—	Mystriosuchini	(Huene 1915)
genus	Machaeroprosopus

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. †Machaeroprosopus Mehl 1916

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†Machaeroprosopus andersoni Mehl 1922

†Machaeroprosopus buceros Cope 1881

†Machaeroprosopus jablonskiae Parker and Irmis 2006

†Machaeroprosopus lottorum Hungerbühler et al. 2013

†Machaeroprosopus mccauleyi Ballew 1989

†Machaeroprosopus pristinus Mehl 1928

†Machaeroprosopus tenuis Camp 1930

†Machaeroprosopus validus Mehl 1916

Invalid names: Arribasuchus Long and Murry 1995 [synonym], Pseudopalatus Mehl 1928 [synonym], Redondasaurus Hunt and Lucas 1993 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

terrestrialsubc

Locomotion:

actively mobilec

Diet:

carnivoresubo

Created:

2009-01-03 20:38:18

Modified:

2009-01-03 22:38:18

Source: subo = suborder, subc = subclass, c = class, subp = subphylum

References: Carroll 1988, Benton 1983, Hendy et al. 2009

Age range: base of the Lacian to the top of the Sevatian or 221.50000 to 205.60000 Ma

Collections (42 total)

Time interval	Ma	Country or state	Original ID and collection number
Norian	228.0 - 208.5	USA (Texas)	M. lottorum, Pseudopalatus pristinus (196537) Pseudopalatus sp. (218144)
Norian	228.0 - 208.5	USA (New Mexico)	Belodon buceros (93620) M. andersoni (196536) M. sp. (93685) Phytosauria indet. (84272) Phytosauridae indet. (83738) Pseudopalatus mccauleyi (188759) Pseudopalatus mccauleyi, Rutiodon gregorii (49499) Pseudopalatus pristinus (94105) Pseudopalatus pristinus, Arribasuchus buceros (47126) Pseudopalatus sp. (48516 80926) Redondasaurus gregorii (83737) Redondasaurus sp. (93672)
Norian	228.0 - 208.5	USA (Arizona)	Arribasuchus buceros (93417) M. tenuis, Pseudopalatus mccauleyi (93431) M. validus (93552) Nicrosaurus sp. (93491) Pseudopalatinae indet. (49500) Pseudopalatus jablonskiae (88338) Pseudopalatus pristinus (93429 93432 93461 93462 93464 93466 93566) Pseudopalatus pristinus, Pseudopalatus sp. (48423 84017) Pseudopalatus sp. (92827 92855)
Lacian - Sevatian	221.5 - 205.6	USA (New Mexico)	Pseudopalatus buceros (62311)
Rhaetian	208.5 - 201.3	USA (New Mexico)	Redondasaurus gregorii, Phytosauria indet. (48422)
Rhaetian	208.5 - 201.3	USA (Arizona)	Pseudopalatus buceros, Pseudopalatus sp. (84009) Pseudopalatus mccauleyi, Pseudopalatus sp. (84012) Pseudopalatus pristinus, Pseudopalatus sp. (84013 84014 84015 84016) Pseudopalatus sp. (84010)
Rhaetian	208.5 - 201.3	USA (Utah)	Redondasaurus gregorii (137230)