PBDB Taxon

Basic info	Taxonomic history	Classification	Included Taxa
Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Baena

Reptilia - Baenidae

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), 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), Lyson and Joyce (2011); to Eubaeninae by Joyce and Lyson (2015); and to Eubaeninae by Lyson et al. (2016).

Species

B. affinis (syn. B. inflata, B. riparia), B. arenosa (syn. B. sima, B. emiliae, B. clara) (type species), B. escavada, B. hayi

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.

Is something missing? Join the Paleobiology Database and enter the data

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

Rank	Name	Author
—	Anthracosauria
subclass	Amphibiosauria	Kuhn 1967
—	Cotylosauria	()
—	Amniota
—	Sauropsida
class	Reptilia
—	Testudinata	(Oppel 1811)
—	Paracryptodira
family	Baenidae	Cope 1882
—	Baenodda	()
—	Eubaeninae	(Williams 1950)
genus	Baena

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

show all | hide all

†Baena affinis Leidy 1871

hide

Invalid names: Baena inflata Gilmore 1915 [synonym], Baena riparia Hay 1908 [synonym]

†Baena arenosa Leidy 1870

hide

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.

Measurements

No measurements are available

Composition:

phosphaticsubp

Entire body:

yesg

Adult length:

100 to < 1000g

Environment:

freshwaterg

Locomotion:

actively mobilec

Life habit:

aquaticg

Diet:

carnivoreg

Comments:

length about 460 mm estimated from text figureg

Created:

2006-04-19 15:11:27

Modified:

2006-04-19 17:11:27

Source: g = genus, c = class, subp = subphylum

References: Holroyd et al. 2001, Hendy et al. 2009, Carroll 1988

Age range: base of the Judithian to the top of the Lutetian or 83.50000 to 41.30000 Ma

Collections (50 total)

Time interval	Ma	Country or state	Original ID and collection number
Early/Lower Campanian	83.5 - 70.6	USA (North Carolina)	B. sp. (106277)
Judithian	83.5 - 70.6	USA (Texas)	B. sp. (14489)
Late/Upper Campanian	83.5 - 70.6	USA (New Mexico)	B. sp. (196540)
Middle Campanian	83.5 - 70.6	USA (Utah)	B. sp. (167520)
Lancian	70.6 - 66.0	USA (Wyoming)	B. sp. (14519 14579)
Late/Upper Maastrichtian	70.6 - 66.0	Canada (Saskatchewan)	B. sp. 1, B. sp. 2 (45675)
Late/Upper Maastrichtian	70.6 - 66.0	USA (Wyoming)	B. hayi (122902)
Torrejonian	63.8 - 60.9	USA (New Mexico)	B. escavada (14834)
Ypresian - Lutetian	56.0 - 41.3	USA (Wyoming)	B. arenosa (193357)
Wasatchian	55.8 - 50.3	USA (Wyoming)	B. arenosa (15661) B. sp. (15793 59890)
Wasatchian	55.8 - 50.3	USA (New Mexico)	B. arenosa (176881)
Bridgerian	50.3 - 46.2	USA (Wyoming)	B. arenosa (16229 16253 16262 16265 16647 27269 70257 131861) B. arenosa, B. affinis (16201) B. arenosa, B. sima, B. riparia (16228) B. sima (16255)
Bridgerian - Early/Lower Uintan	50.3 - 39.7	USA (Wyoming)	B. arenosa (128443)
Middle Eocene	47.8 - 37.71	USA (Wyoming)	B. arenosa (81455)
Early/Lower Uintan	46.2 - 39.7	USA (Utah)	B. arenosa (16572 109207 186888)
Late/Upper Uintan	46.2 - 39.7	Canada (Saskatchewan)	B. sp. (16626)
Uintan	46.2 - 39.7	USA (Utah)	B. arenosa (185685 186889 186890 186891 186892 186893 186894 186895 186896 186897 222799 222805) B. emiliae (16589 185687 185688 185689 185691) B. emiliae, B. inflata (16646) B. inflata (185690)