PBDB Taxon

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Mammalodontidae

Mammalia - Cetacea - Mammalodontidae

Taxonomy

Mammalodontidae was named by Mitchell (1989). It is not extant. It was considered monophyletic by Geisler et al. (2011).

It was assigned to Crenaticeti by Rice (1998); to Aetiocetoidea by Sanders and Barnes (2002), Geisler and Sanders (2003), Gingerich (2005); to Mysticeti by Mitchell (1989), Fordyce and Barnes (1994), Fordyce et al. (1995), McKenna and Bell (1997), Fordyce and de Muizon (2001), Rice (2002), Fordyce (2003), Fitzgerald (2004), Fitzgerald (2010), Bianucci et al. (2011); and to Mysticeti by Bianucci and Landini (2007), Rice (2009), Geisler et al. (2011), Boessenecker and Fordyce (2015), Marx and Fordyce (2015), Marx et al. (2016), Fordyce and Marx (2016), Berta (2017), Fordyce and Marx (2018).

Subtaxa

Janjucetus, Mammalodon

Synonyms

Janjucetidae was named by Fitzgerald (2006). It was considered monophyletic by Fitzgerald (2010).

It was synonymized subjectively with Mammalodontidae by Fitzgerald (2010).

It was assigned to Mysticeti by Fitzgerald (2006); and to Mysticeti by Rice (2009).

Synonymy list

Year	Name and author
1989	Mammalodontidae Mitchell p. 2231
1994	Mammalodontidae Fordyce and Barnes p. 428 figs. Table 1
1995	Mammalodontidae Fordyce et al. p. 379
1997	Mammalodontidae McKenna and Bell p. 375
1998	Mammalodontidae Rice
2001	Mammalodontidae Fordyce and de Muizon p. 176
2002	Mammalodontidae Rice p. 231 figs. Table 1
2002	Mammalodontidae Sanders and Barnes p. 353
2003	Mammalodontidae Fordyce p. 156 figs. Figure 9.1
2003	Mammalodontidae Geisler and Sanders p. 27
2004	Mammalodontidae Fitzgerald p. 206
2005	Mammalodontidae Gingerich p. 237 figs. Table 15.1
2006	Janjucetidae Fitzgerald p. 1
2007	Mammalodontidae Bianucci and Landini p. 45 figs. Table 2.1
2009	Janjucetidae Rice p. 235 figs. Table 1
2009	Mammalodontidae Rice p. 235 figs. Table 1
2010	Mammalodontidae Fitzgerald p. 370 figs. Table 1
2011	Mammalodontidae Bianucci et al. p. 572
2011	Mammalodontidae Geisler et al. p. 6 figs. Table 1
2015	Mammalodontidae Boessenecker and Fordyce figs. Table 1
2015	Mammalodontidae Marx and Fordyce figs. Figure 2
2016	Mammalodontidae Fordyce and Marx p. 108
2016	Mammalodontidae Marx et al. p. 104
2017	Mammalodontidae Berta p. 166
2018	Mammalodontidae Fordyce and Marx p. 2 figs. Fig. 4

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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
subclass	Synapsida
—	Therapsida	()
infraorder	Cynodontia	()
—	Mammaliamorpha

Rank	Name	Author
—	Mammaliaformes
class	Mammalia
—	Cladotheria
—	Zatheria
subclass	Tribosphenida	()
subclass	Theria
—	Eutheria	()
—	Placentalia
—	Boreoeutheria
—	Laurasiatheria
—	Scrotifera
—	Euungulata
—	Artiodactylamorpha
—	Artiodactyla	()
—	Whippomorpha
order	Cetacea
—	Pelagiceti
—	Neoceti
suborder	Mysticeti
family	Mammalodontidae
family	Mammalodontidae

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. †Mammalodontidae Mitchell 1989

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G. †Janjucetus Fitzgerald 2006

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†Janjucetus hunderi Fitzgerald 2006

G. †Mammalodon Pritchard 1939

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†Mammalodon colliveri Pritchard 1939

†Mammalodon hakataramea Fordyce and Marx 2016

Invalid names: Janjucetidae Fitzgerald 2006 [synonym]

Diagnosis

Reference	Diagnosis
E. M. G. Fitzgerald 2010	Emended diagnosis of family: Relatively small mysticetes (condylobasal length < 500 mm). More archaic than described species of Chaeomysticeti: mammalodontids are differentiated from all these mysticetes in possessing mineralized rostral and mandibular teeth as adults. Mammalodontids are placed in the Mysticeti because they possess: a maxilla with a dorsoventrally thin lateral edge, a laterally projecting antorbital process with a steep face on its anterior edge clearly distinguishing it from the rostral part of the maxilla, and a posteriorly elongated infraorbital process developed ventral to the supraorbital process of the frontal; upper cheek teeth that lack an entocingulum; and transversely thickened basioccipital crests.

Measurements

No measurements are available

Composition:

hydroxyapatitesubo

Form:

roller-shapedo

Ontogeny:

modification of partso

Environment:

marinesubo

Locomotion:

actively mobileo

Life habit:

aquaticsubo

Depth habitat:

surfaceo

Diet:

carnivoresubo

Diet 2:

suspension feedersubo

Reproduction:

viviparouso

Created:

2005-03-06 14:20:41

Modified:

2005-03-06 16:34:40

Source: subo = suborder, o = order

Reference: Uhen 2004

Age range: base of the Duntroonian to the top of the Chattian or 27.30000 to 23.04000 Ma

Collections (13 total)

Time interval	Ma	Country or state	Original ID and collection number
Duntroonian	27.3 - 25.2	New Zealand	Mammalodon hakataramea (152358)
Chattian	27.3 - 23.04	New Zealand (Canterbury)	Mammalodontidae indet. (208603)
Chattian	27.3 - 23.04	Australia (Victoria)	Cetacea indet. (51393) Mammalodon new species 1, Mammalodon colliveri (48647) Mammalodon sp., Mammalodontidae indet., Mammalodon colliveri (46166) Mammalodontidae indet. (51390 51392 176295) Mammalodontidae indet., Janjucetus hunderi (114718) Mysticeti indet. (51391)
Chattian	27.3 - 23.04	Malta	Mammalodontidae indet. (122008)
Late/Upper Oligocene - Early/Lower Miocene	27.3 - 15.98	Australia (Victoria)	Mammalodontidae indet. (51395)
Waitakian	25.2 - 21.7	New Zealand	Mammalodon sp. (74593)