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Taxonomy
Baena was named by Leidy (1870). Its type is Baena arenosa. It is the type genus of Baenidae.
It was assigned to Chelonia by Leidy (1873); to Pleurosternidae by Hay (1902) and Lambe (1906); to Baeninae by Gaffney (1972); to Paracryptodira by Anquetin et al. (2009); to Baenodda by Lyson and Joyce (2010); to Baenidae by Cope (1884), Hay (1908), Gilmore (1915), Gilmore (1916), Gilmore (1919), Hay (1930), Estes (1964), Carroll (1988), Hutchison (1992), Holroyd et al. (2001), Joyce (2007) and Lyson and Joyce (2011); to Eubaeninae by Joyce and Lyson (2015); and to Eubaeninae by Lyson et al. (2016).
It was assigned to Chelonia by Leidy (1873); to Pleurosternidae by Hay (1902) and Lambe (1906); to Baeninae by Gaffney (1972); to Paracryptodira by Anquetin et al. (2009); to Baenodda by Lyson and Joyce (2010); to Baenidae by Cope (1884), Hay (1908), Gilmore (1915), Gilmore (1916), Gilmore (1919), Hay (1930), Estes (1964), Carroll (1988), Hutchison (1992), Holroyd et al. (2001), Joyce (2007) and Lyson and Joyce (2011); to Eubaeninae by Joyce and Lyson (2015); and to Eubaeninae by Lyson et al. (2016).
Species
Synonymy list
| Year | Name and author |
|---|---|
| 1870 | Baena Leidy |
| 1873 | Baena Leidy p. 341 |
| 1884 | Baena Cope |
| 1902 | Baena Hay p. 437 |
| 1906 | Baena Lambe p. 232 |
| 1908 | Baena Hay pp. 59-60 |
| 1915 | Baena Gilmore p. 107 |
| 1916 | Baena Gilmore p. 293 |
| 1919 | Baena Gilmore p. 116 |
| 1930 | Baena Hay p. 71 |
| 1964 | Baena Estes p. 96 |
| 1972 | Baena Gaffney pp. 248, 274-276 |
| 1988 | Baena Carroll |
| 1992 | Baena Hutchison |
| 2001 | Baena Holroyd et al. |
| 2007 | Baena Joyce |
| 2009 | Baena Anquetin et al. |
| 2010 | Baena Lyson and Joyce |
| 2011 | Baena Lyson and Joyce p. 792 |
| 2015 | Baena Joyce and Lyson |
| 2016 | Baena Lyson 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. †Baena Leidy 1870
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†Baena affinis Leidy 1871
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Invalid names: Baena inflata Gilmore 1915 [synonym], Baena riparia Hay 1908 [synonym]
†Baena arenosa Leidy 1870
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Invalid names: Baena clara Hay 1908 [synonym], Baena emiliae Hay 1908 [synonym], Baena sima Hay 1908 [synonym]
†Baena escavada Hay 1908
†Baena hayi Gilmore 1916
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| O. P. Hay 1908 | Shell firmly joined to the carapace by sutural union with the lateral peripherals and by broad and high axillary and inguinal buttresses. Hinder border of the carapace scallopt, and with an extensive excavation over the tail. Nuchal bone in contact with the first neural; no preneural; no supramarginal scutes; anterior lobe of plastron not extended in front of the carapace. Mesoplastra large, with the outer ends expanded. Posterior plastral lobe slightly emarginated. Intergulars, gulars, and inframarginals present. Skull broad, with the temporal region extensively rooft, the squamosals in contact with the parietals. Jugal forming a part of the rim of the orbit. Triturating surface of the maxilla furnisht with a prominent longitudinal ridge. Choanae opening on a line joining the fronts of the orbits. | |
| E. S. Gaffney 1972 | Baenines with slight temporal emargination; diameter of orbit and FORAMEN MAGNUM small relative to Chisternon: lateral maxillary constriction in some specimens; nasals fused to frontals, anterior margin of nasals with concavity facing anteriorly; posterior margin of skull roof without transverse ridge; basisphenoid small compared to Chisternon; preneural absent; first vertebral may be rectangular with no supracostal scutes or it may be triangular with supracostal scutes. |