PBDB Taxon

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Morphology	Ecology and taphonomy	External Literature Search	Age range and collections

Cretodus semiplicatus

Chondrichthyes - Lamniformes - Pseudoscapanorhynchidae

Taxonomy

Otodus semiplicatus was named by Agassiz (1843).

It was recombined as Lamna semiplicata by Woodward (1889), Dalinkevičius (1935) and Cappetta (1973); it was recombined as Cretodus semiplicatus by Müller and Diedrich (1991), Cappetta and Case (1999), Schwimmer et al. (2002), Shimada et al. (2006), Shimada and Martin (2008), Cook et al. (2008), Cook et al. (2013) and Maisch et al. (2021).

Synonyms

Otodus sulcatus was named by Geinitz (1843).

It was recombined as Lamna sulcata by Woodward (1889) and Thurmond (1971); it was synonymized subjectively with Cretodus semiplicatus by Shimada et al. (2006).
Otodus divaricatus was named by Leidy (1872).

It was synonymized subjectively with Cretodus semiplicatus by Shimada et al. (2006).
Scyllium rugosus was named by Williston (1900).

It was recombined as Scylliorhinus rugosus by Hay (1902); it was synonymized subjectively with Cretodus semiplicatus by Shimada et al. (2006).
Otodus michoni was named by Coquand (1860).

It was synonymized subjectively with Cretodus semiplicatus by Shimada et al. (2006); it was recombined as Cretodus michoni by Cahuzac et al. (2007).
Otodus crassus was named by Woodward (1888).

It was synonymized subjectively with Cretodus semiplicatus by Shimada et al. (2006).

Synonymy list

Year	Name and author
1843	Otodus semiplicatus Agassiz figs. Pl 36, figs 32,33
1843	Otodus sulcatus Geinitz p. 5
1860	Otodus michoni Coquand
1872	Otodus divaricatus Leidy
1873	Otodus divaricatus Leidy p. 305
1873	Otodus semiplicatus Leidy p. 306
1888	Otodus crassus Woodward p. 292
1889	Lamna semiplicata Woodward p. 397
1889	Lamna sulcata Woodward p. 398
1900	Scyllium rugosus Williston
1902	Otodus divaricatus Hay p. 304
1902	Scylliorhinus rugosus Hay p. 310
1903	Otodus sulcatus Hay p. 397 figs. Pl 26, figs 3,4
1935	Lamna semiplicata Dalinkevičius p. 271 figs. Pl 5, figs 110,111
1942	Otodus sulcatus Woodward p. 562
1971	Lamna sulcata Thurmond pp. 218-220
1973	Lamna semiplicata Cappetta p. 506 figs. Pl 1, figs 7-7'
1991	Cretodus semiplicatus Müller and Diedrich p. 33
1999	Cretodus semiplicatus Cappetta and Case p. 21 figs. Pl 14, figs 1-4; text-figs 3,4
2002	Cretodus semiplicatus Schwimmer et al. p. 704 figs. Fig. 1
2006	Cretodus semiplicatus Shimada et al. p. 14 figs. 10.3, 10.4
2007	Cretodus michoni Cahuzac et al. p. 16
2008	Cretodus semiplicatus Cook et al. p. 1190 fig. 4D
2008	Cretodus semiplicatus Shimada and Martin p. 94 fig. 6I
2013	Cretodus semiplicatus Cook et al. p. 574 fig. 12A
2021	Cretodus semiplicatus Maisch et al. pp. 10, 15 figs. 7L-M

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Rank	Name	Author
kingdom	Animalia	()
—	Bilateria
—	Eubilateria	Ax 1987
—	Deuterostomia
phylum	Chordata	Haeckel 1874
subphylum	Vertebrata
superclass	Gnathostomata
class	Chondrichthyes

Rank	Name	Author
subclass	Elasmobranchii	Bonaparte 1838
infraclass	Euselachii	()
—	Neoselachii	Compagno 1977
superorder	Galeomorphii	Compagno 1973
order	Lamniformes	Berg 1958
family	Pseudoscapanorhynchidae
genus	Cretodus	Sokolov 1965
species	semiplicatus	()

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.

†Cretodus semiplicatus Agassiz 1843

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Invalid names: Otodus crassus Woodward 1888 [synonym], Otodus divaricatus Leidy 1872 [synonym], Otodus michoni Coquand 1860 [synonym], Otodus sulcatus Geinitz 1843 [synonym], Scyllium rugosus Williston 1900 [synonym]

Diagnosis

No diagnoses are available

Measurements

No measurements are available

Composition:

phosphaticsubp

Environment:

marinesubp

Locomotion:

actively mobileo

Life habit:

nektonico

Diet:

carnivoreo

Created:

2009-07-21 07:05:21

Modified:

2009-07-21 09:05:21

Source: o = order, subp = subphylum

References: Hendy et al. 2009, Carroll 1988, Wagner 2023

Age range: base of the Late/Upper Aptian to the top of the Santonian or 122.46000 to 83.60000 Ma

Collections (39 total)

Time interval	Ma	Country or state	Original ID and collection number
Aptian	125.0 - 113.0	USA (Texas)	Lamna sulcata (99154)
Late/Upper Aptian - Early/Lower Albian	122.46 - 109.0	Tunisia (Tataouine)	Cretodus semiplicatus (125935)
Albian	113.0 - 100.5	USA (Texas)	Lamna sulcata (99143 99147 99149 99152 99155 99157 99158)
Albian	113.0 - 100.5	Tunisia (Tataouine)	Cretodus semiplicatus (116297)
Early/Lower Albian	112.03 - 109.0	USA (Texas)	Lamna sulcata (99146)
Late/Upper Albian	105.3 - 99.6	Lithuania	Lamna semiplicata (213709 213710)
Late/Upper Albian	105.3 - 99.6	USA (Texas)	Cretodus semiplicatus (213307)
Cenomanian	100.5 - 93.9	Germany (Westphalia)	Cretodus semiplicatus (210063)
Early/Lower Cenomanian	99.6 - 93.5	France (Poitou-Charentes)	Cretodus semiplicatus (73862 77229 77230 77232)
Late/Upper Cenomanian	99.6 - 93.5	France (Poitou-Charentes)	Cretodus semiplicatus (88991 110466)
Late/Upper Cenomanian	99.6 - 93.5	Lebanon	Otodus sulcatus (221230 221233)
Late/Upper Cenomanian	99.6 - 93.5	USA (Minnesota)	Cretodus semiplicatus (61819)
Late/Upper Cenomanian	99.6 - 93.5	USA (Kansas)	Cretodus semiplicatus (213416 213419)
Middle Cenomanian	99.6 - 93.5	Canada (Alberta)	Cretodus semiplicatus (213314 213318)
Middle Cenomanian	99.6 - 93.5	USA (Nebraska)	Cretodus semiplicatus (213401)
Middle Cenomanian	99.6 - 93.5	USA (Colorado)	Cretodus semiplicatus (35429)
Turonian	93.9 - 89.8	France (Charente)	Cretodus semiplicatus (161748)
Turonian - Coniacian	93.9 - 86.3	USA (New Mexico)	Cretodus semiplicatus (221290)
Early/Lower Turonian	93.5 - 89.3	Canada (Alberta)	Cretodus semiplicatus (136242)
Late/Upper Turonian	93.5 - 89.3	USA (South Dakota)	Lamna semiplicata (213291)
Late/Upper Turonian	93.5 - 89.3	USA (Texas)	Cretodus semiplicatus (213299)
Middle Turonian	93.5 - 89.3	USA (New Mexico)	Cretodus semiplicatus (179267)
Santonian	86.3 - 83.6	USA (Georgia)	Cretodus semiplicatus (5159 152687)
Late/Upper Santonian	85.8 - 83.5	USA (Alabama)	Cretodus semiplicatus (78137)