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Taxonomy
Sebecidae was named by Savage (1951). It is not extant. It was considered monophyletic by Larsson and Sues (2007).
It was assigned to Sebecosuchia by Buffetaut (1982) and Gasparini (1984); to Crocodylia by Busbey (1986); to Mesosuchia by Carroll (1988); to Sebecosuchia by Colbert (1946), Kuhn (1966) and Gasparini et al. (1991); to Baurusuchoidea by Carvalho et al. (2004); to Sebecia by Larsson and Sues (2007); to Crocodiliformes by Riff et al. (2010); and to Sebecosuchia by Turner and Calvo (2005), Pol et al. (2012), Pol et al. (2014) and Sellés et al. (2020).
It was assigned to Sebecosuchia by Buffetaut (1982) and Gasparini (1984); to Crocodylia by Busbey (1986); to Mesosuchia by Carroll (1988); to Sebecosuchia by Colbert (1946), Kuhn (1966) and Gasparini et al. (1991); to Baurusuchoidea by Carvalho et al. (2004); to Sebecia by Larsson and Sues (2007); to Crocodiliformes by Riff et al. (2010); and to Sebecosuchia by Turner and Calvo (2005), Pol et al. (2012), Pol et al. (2014) and Sellés et al. (2020).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1946 | Sebecidae Colbert |
| 1951 | Sebecidae Savage |
| 1966 | Sebecidae Kuhn p. 85 |
| 1982 | Sebecidae Buffetaut p. 18 |
| 1984 | Sebecidae Gasparini p. 86 |
| 1986 | Sebecidae Busbey p. 26 |
| 1988 | Sebecidae Carroll |
| 1991 | Sebecidae Gasparini et al. p. 325 |
| 2004 | Sebecidae Carvalho et al. p. 988 fig. 7 |
| 2005 | Sebecidae Turner and Calvo p. 93 |
| 2007 | Sebecidae Larsson and Sues |
| 2010 | Sebecidae Riff et al. |
| 2012 | Sebecidae Pol et al. |
| 2014 | Sebecidae Pol et al. |
| 2020 | Sebecidae Sellés 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.
Fm. †Sebecidae Savage 1951
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G. †Langstonia Paolillo and Linares 2007
G. †Sebecus Stirton 1953
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†Sebecus ayrampu Bravo et al. 2021
†Sebecus huilensis Langston 1965
†Sebecus icaeorhinus Simpson 1937
†Sebecus querejazus Buffetaut and Marshall 1991
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Invalid names: Sebecus carajazus Gasparini et al. 1993 [synonym]
G. †Zulmasuchus Paolillo and Linares 2007
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| E. H. Colbert 1946 | Skull compressed and deep, especially in the facial region. Internal nares anteriorly placed, the front border being formed by the palatines, the back border by the pterygoids; palatine tube incipient. Well-developed quadratojugal-surangular articulation; quadrate inclined. Supratemporal fenestra rather small, broader than long. Four teeth in the premaxilla, 10 in the maxilla, and 13 in the dentary, none of which are greatly differentiated as to size. The pre- maxillary and anterior dentary teeth are rounded in cross section, while the other teeth are laterally compressed, with well-developed serrations on the anterior and posterior cutting edges. There is a shallow notch along the premaxillary-maxillary suture for the reception of the fourth dentary tooth. | |
| A. B. Busbey 1986 | Articular process directed posteromedially with no dorsal curvature. Medial edge of articular shelf deflected ventrally along the medial side of the articular. No surangular lappet between angular and articular. Reduced and simplified osteoscutes lacking heavy sculpturing. |
Measurements
No measurements are available
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| Source: f = family, c = class, subp = subphylum | |||||
| References: Gasparini 1984, Carroll 1988, Hendy et al. 2009 | |||||
Age range: base of the Danian to the top of the Middle Miocene or 66.00000 to 11.60800 Ma
Collections (36 total)
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Danian | Bolivia | Sebecus querejazus (118197) | |
| Selandian - Thanetian | Argentina (Jujuy) | Sebecus ayrampu (222891) | |
| Late/Upper Paleocene | Argentina (Tucumán) | Lorosuchus nodosus (58702) | |
| Late/Upper Paleocene | Argentina (Salta) | Bretesuchus bonapartei (123363) | |
| Late/Upper Paleocene - Early/Lower Eocene | Brazil (Rio de Janeiro) | Sahitisuchus fluminensis (153815) | |
| Casamayoran | Argentina (Chubut) | Sebecus icaeorhinus (39295) | |
| Ypresian | Argentina (Jujuy) | Ayllusuchus fernandezi (92655) | |
| Ypresian | Argentina (Salta) | Sebecus sp. (20983 176659) | |
| Lutetian | Argentina (Chubut) | Sebecus sp., Sebecus icaeorhinus (44956) | |
| Lutetian | USA (California) | Sebecidae indet. (16664) | |
| Lutetian - Bartonian | Argentina (Chubut) | Sebecus sp. (176164) | |
| Middle Eocene | Argentina (Salta) | Sebecus sp. (132937) | |
| Middle Eocene | Argentina (Chubut) | Sebecus icaeorhinus (142920 142929) | |
| Middle Eocene | Peru | Sebecus sp. (176136) | |
| Uintan | USA (California) | Sebecidae indet. (16545) | |
| Divisaderan | Argentina (Mendoza) | Ilchunaia parva, Sebecosuchia indet. (92669) | |
| Bartonian | Brazil (Paraná) | Sebecidae indet. (186567) | |
| Priabonian | Argentina (Catamarca) | Sebecidae indet. (41608) | |
| Priabonian - Rupelian | Peru (Loreto) | Sebecus sp. (144474) | |
| Late/Upper Eocene | Peru (San Martín) | Sebecus sp. (225589) | |
| Late/Upper Eocene | Peru (San Martin) | Sebecidae indet. (225588) | |
| Early/Lower Oligocene | Peru | Sebecidae indet. (199563) Sebecus sp. (199559) | |
| Deseadan | Argentina (Chubut) | Sebecidae indet. (92670) | |
| Late/Upper Oligocene | Peru (Loreto) | Sebecus sp. (176130 176147) | |
| Colhuehuapian | Peru | Langstonia sp. (176149) | |
| Middle Miocene | Venezuela (Barinas) | Barinasuchus arveloi (113145) | |
| Laventan | Colombia | Sebecus huilensis (153817) | |
| Laventan | Colombia (Huila) | Sebecus huilensis (133648 187741) | |
| Laventan | Colombia (Tolima) | Sebecus sp. (143779) | |
| Laventan | Peru (Ucayali) | Sebecus huilensis (107993) | |
| Laventan | Peru | Sebecus huilensis (107992) |