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Glypheidea; Temporal range: Early Triassic–Recent PreꞒ Ꞓ O S D C P T J K Pg N
	fossil Mecochirus longimanatus
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Malacostraca
Order:	Decapoda
Suborder:	Pleocyemata
(unranked):	Reptantia
Infraorder:	Glypheidea; Winckler, 1882
Superfamilies
	Glypheoidea Winckler, 1882; †Erymoidea Van Straelen, 1924;

Glypheidea is an infraorder of lobster-like decapod crustaceans, comprising a number of fossil forms and the two extant (living) genera Neoglyphea and Laurentaeglyphea:^[1] The infraorder was thought to be extinct until a living species, Neoglyphea inopinata, was discovered in 1975. They are now considered "living fossils", with over 256 fossil species discovered, and just two extant species.^[2]

Phylogeny

Glypheidea belongs to the clade Reptantia within the order Decapoda, although its exact placement within Reptantia is difficult to determine.^[3] Some phylogenetic studies consider Glypheidea to be most closely related to the infraorder Astacidea, which consists of the lobsters and crayfish,^[2] whereas other studies instead consider Glypheidea to be more closely related to the infraorder Polychelida, a group of deep-sea blind lobsters.^[3]

Taxonomy

Glypheoidea Winckler, 1882

† Chimaerastacidae Amati, Feldmann & Zonneveld, 2004
- † Chimaerastacus Amati, Feldmann & Zonneveld, 2004
Glypheidae Winckler, 1882
- † Cedrillosia Garassino, Artal & Pasini, 2009
- † Glyphea von Meyer, 1835
- Laurentaeglyphea Forest, 2006
- † Litogaster von Meyer, 1847
- Neoglyphea Forest & de Saint Laurent, 1975
- † Paralitogaster Glaessner, 1969
- † Squamosoglyphea Beurlen, 1930
- † Trachysoma Bell, 1858
† Mecochiridae Van Straelen, 1924
- † Huhatanka Feldmann & West, 1978
- † Jabaloya Garassino, Artal & Pasini, 2009
- † Mecochirus Germar, 1827
- † Meyeria M'Coy, 1849
- † Praeatya Woodward, 1869
- † Pseudoglyphea Oppel, 1861
- † Selenisca von Meyer, 1847
† Pemphicidae Van Straelen, 1928
- † Pemphix Meyer, 1840
- † Pseudopemphix Wüst, 1903
- † Sinopemphix Li, 1975
† Platychelidae Glaessner, 1969
- † Glaessnericaris Garassino & Teruzzi, 1993
- † Platychela Glaessner, 1931
- † Platypleon Van Straelen, 1936

† Erymoidea Van Straelen, 1924

† Erymidae Van Straelen, 1924
- † Clytiella Glaessner, 1931
- † Clytiopsis Bill, 1914
- † Enoploclytia M'Coy, 1849
- † Eryma von Meyer, 1840
- † Galicia Garassino & Krobicki, 2002
- † Lissocardia von Meyer, 1851
- † Palaeastacus Bell, 1850
- † Paraclytiopsis Oravec, 1962
- † Protoclytiopsis Birshtein, 1958
- † Pustulina Quenstedt, 1857
- † Stenodactylina Beurlen, 1928