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Thecachampsa sericodon

Osteichthyes

Taxonomy
Thecachampsa sericodon was named by Cope (1867). Its type specimen is ANSP 9443-9445, a set of teeth, and it is a 3D body fossil. Its type locality is James T. Thomas estate, which is in a Serravallian offshore shelf horizon in the Calvert Formation of Maryland.

It was recombined as Crocodylus sericodon by Hay (1902), Hay (1930); it was synonymized subjectively with Thecachampsa antiqua by Myrick (2001).

Subspecies
Gavialosuchus americana lusitanica
Sister species lacking formal opinion data
T. antiquua

Synonyms
Synonymy list
YearName and author
1867Thecachampsa sericodon Cope p. 143
1869Thecachampsa sicaria Cope p. 12
1869Thecachampsa sericodon Cope p. 64
1875Thecachampsa sericodon Cope p. 363
1902Crocodylus sericodon Hay p. 513
1902Crocodylus sicariaus Hay p. 513
1904Thecachampsa sericodon Case p. 65
1915Tomistoma americana Sellards p. 138 figs. figs. 1-2
1921Gavialosuchus americana Mook p. 39
1927Tomistoma americanum Müller
1930Gavialosuchus americanus Hay p. 149
1930Crocodylus sericodon Hay p. 154
1930Crocodylus sicarius Hay p. 154
1944Megalodelphis magnidens Kellogg p. 445 figs. Plate 2, Fig. 2: Plate 3
1952Megalodelphis magnidens Sherman p. 99
2008Gavialosuchus americana Laurito and Valerio p. 109
2018Thecachampsa sericodon Weems p. 218

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
classOsteichthyes
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
subclassTetrapodomorpha()
—Tetrapoda
—Reptiliomorpha
—Anthracosauria
subclassAmphibiosauriaKuhn 1967
—Cotylosauria()
—Amniota
—Sauropsida
classReptilia
subclassEureptilia()
—Romeriida
RankNameAuthor
—Diapsida()
—Archosauromorpha(Huene 1946)
—Crocopoda
—ArchosauriformesGauthier 1986
—Eucrocopoda
—Archosauria()
—Pseudosuchia(Zittel 1890)
—SuchiaKrebs 1974
—Paracrocodylomorpha
—Loricata(Merrem 1820)
—Crocodylomorpha()
—Solidocrania
suborderCrocodyliformes
—MesoeucrocodyliaWhetstone and Whybrow 1983
—NeosuchiaClark 1988
suborderEusuchiaHuxley 1875
—Crocodylia(Owen 1842)
superfamilyGavialoideaBrochu 1997
genusThecachampsaCope 1867
speciessericodon

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.

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†Gavialosuchus americana lusitanica Vianna and Moraes 1945
Invalid names: Megalodelphis magnidens Kellogg 1944 [synonym], Thecachampsa sicaria Cope 1869 [synonym], Tomistoma americana Sellards 1915 [synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Environment: marineuc
Locomotion: actively mobilec
Diet: carnivoreuc
Created: 2009-01-03 20:38:59
Modified: 2009-01-03 22:38:59
Source: c = class, subp = subphylum, uc = unranked clade
References: Carroll 1988, Bush and Bambach 2015, Benton 1983, Kiessling 2004, Hendy et al. 2009

Age range: base of the Thanetian to the top of the Rancholabrean or 59.24000 to 0.01400 Ma

Collections (18 total)


Time interval Ma Country or state Original ID and collection number
Thanetian59.24 - 56.0USA (Maryland) Thecachampsa sericodon (84045)
Burdigalian20.45 - 15.98USA (New Jersey) Thecachampsa sericodon (18587)
Langhian15.98 - 13.82Portugal (Lisbon) Gavialosuchus americana (35986)
Langhian15.98 - 13.82USA (Virginia) Thecachampsa sericodon (79793)
Serravallian13.82 - 11.63USA (Maryland) Thecachampsa sericodon (type locality: 55396) Thecachampsa sicaria (57782)
Serravallian13.82 - 11.63USA (Virginia) Thecachampsa sericodon (187324)
Early/Lower Clarendonian12.5 - 9.4USA (Florida) Gavialosuchus americanus (161374)
Late/Upper Clarendonian12.5 - 9.4USA (Florida) Gavialosuchus americanus (18554)
Tortonian11.63 - 7.246USA (Florida) Megalodelphis magnidens (45469) Tomistoma americana (45452)
Tortonian - Zanclean11.63 - 3.6USA (Florida) Gavialosuchus americanus (144202)
Tortonian - Zanclean11.63 - 3.6USA (florida) Gavialosuchus americanus (144200)
Hemphillian9.4 - 4.7Costa Rica (Puntarenas) Gavialosuchus americana (144596)
Hemphillian9.4 - 4.7USA (Florida) Gavialosuchus americana (18560)
early Early Hemphillian - late Early Hemphillian9.4 - 4.7USA (Florida) Gavialosuchus americana (18539) Gavialosuchus americanus (154221)
Rancholabrean0.21 - 0.014USA (South Carolina) Gavialosuchus americanus (79757)