Xiphodolamia

Xiphodolamia; Temporal range:
	Xiphodolamia ensis teeth from the London Clay
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Infraclass:	Osteodonti
Superorder:	Lamnae
Order:	Odontaspidida
Superfamily:	Isuroidea
Family:	Lamiostomatidae
Subfamily:	†Xiphodolamiinae; Glükman 1964
Genus:	†Xiphodolamia; Leidy, 1877
Species
	Xiphodolamia barbadica Casier 1958; Xiphodolamia ensis Leidy 1877; Xiphodolamia eocaena Woodward 1889; Xiphodolamia morricei Jordan and Beal 1910; Xiphodolamia serrata Adnet et al. 2009;

Xiphodolamia is a rare extinct genus of mackerel shark which lived during the Eocene epoch. It is only known from isolated teeth, but has been found in Europe, Africa, and Asia.^[4] It is assumed to be pelagic, occurring more frequently in deeper water deposits, most notably the London Clay and Eocene deposits in Denmark. It is distinguished by its rectangular root and twisted blade, unique among mackerel sharks. It is unclear what niche this specialized dentition helped exploit.^[5]

^ J. Leidy. 1877. Description of vertebrate remains, chiefly from the phosphate beds of South Carolina. Journal of the Academy of Natural Sciences of Philadelphia 8:209–260
^ L. S. Glükman. 1964. Class Chondrichthyes, cartilaginous fishes. Subclass Elasmobranchii (sharks). In D. V. Obruchev (ed.), Fundamentals of Paleontology. Vol. XI. Agnatha, Pisces. Izdatel'stvo "Nauka", Moscow 292-352
^ "PBDB Taxon".
^ "elasmo.com". www.elasmo.com. Retrieved 23 August 2020.
^ Adnet, S.; Hosseinzadeh, R.; Antunes, M. T.; Balbino, A. C.; Kozlov, V. A.; Cappetta, H. (1 October 2009). "Review of the enigmatic Eocene shark genus Xiphodolamia (Chondrichthyes, Lamniformes) and description of a new species recovered from Angola, Iran and Jordan". Journal of African Earth Sciences. 55 (3): 197–204. Bibcode:2009JAfES..55..197A. doi:10.1016/j.jafrearsci.2009.04.005. ISSN 1464-343X.

[1] J. Leidy. 1877. Description of vertebrate remains, chiefly from the phosphate beds of South Carolina. Journal of the Academy of Natural Sciences of Philadelphia 8:209–260

[2] L. S. Glükman. 1964. Class Chondrichthyes, cartilaginous fishes. Subclass Elasmobranchii (sharks). In D. V. Obruchev (ed.), Fundamentals of Paleontology. Vol. XI. Agnatha, Pisces. Izdatel'stvo "Nauka", Moscow 292-352

[3] "PBDB Taxon".

[:1-4] "elasmo.com". www.elasmo.com. Retrieved 23 August 2020.

[:0-5] Adnet, S.; Hosseinzadeh, R.; Antunes, M. T.; Balbino, A. C.; Kozlov, V. A.; Cappetta, H. (1 October 2009). "Review of the enigmatic Eocene shark genus Xiphodolamia (Chondrichthyes, Lamniformes) and description of a new species recovered from Angola, Iran and Jordan". Journal of African Earth Sciences. 55 (3): 197–204. Bibcode:2009JAfES..55..197A. doi:10.1016/j.jafrearsci.2009.04.005. ISSN 1464-343X.

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Xiphodolamia Temporal range:

Xiphodolamia ensis teeth from the London Clay
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Infraclass:	Osteodonti
Superorder:	Lamnae
Order:	Odontaspidida
Superfamily:	Isuroidea
Family:	Lamiostomatidae
Subfamily:	†Xiphodolamiinae Glükman 1964^[2]
Genus:	†Xiphodolamia Leidy, 1877^[1]
Species^[3]
Xiphodolamia barbadica Casier 1958 Xiphodolamia ensis Leidy 1877 Xiphodolamia eocaena Woodward 1889 Xiphodolamia morricei Jordan and Beal 1910 Xiphodolamia serrata Adnet et al. 2009