''Meketibolodon'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

extinct Extinction is the termination of an organism by the death of its Endling, last member. A taxon may become Functional extinction, functionally extinct before the death of its last member if it loses the capacity to Reproduction, reproduce and ...

mammal A mammal () is a vertebrate animal of the Class (biology), class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three ...

from the Kimmeridgian (Upper

Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately 143.1 Mya. ...

) Camadas de Guimarota of Guimarota,

Portugal Portugal, officially the Portuguese Republic, is a country on the Iberian Peninsula in Southwestern Europe. Featuring Cabo da Roca, the westernmost point in continental Europe, Portugal borders Spain to its north and east, with which it share ...

. It was a relatively early member of the also extinct order

Multituberculata Multituberculata (commonly known as multituberculates, named for the multiple tubercles of their teeth) is an extinct Order (biology), order of rodent-like mammals with a fossil record spanning over 130 million years. They first appeared in the M ...

suborder Order () is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and recognized ...

Plagiaulacida Plagiaulacida is a group of extinct Multituberculata, multituberculate mammals. Multituberculates were among the most common mammals of the Mesozoic, "the age of the dinosaurs". Plagiaulacids are a paraphyletic grouping, containing all multituber ...

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Paulchoffatiidae Paulchoffatiidae is a family of extinct mammals that lived predominantly during the Upper Jurassic period, though a couple of genera are known from the Early Cretaceous. Fossils have been reported from Europe (Portugal, Spain, Germany and England ...

. The genus was named by Hahn G. in 1993 based on nine specimens of lower jaw. The

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

is ''Pseudobolodon robustus'' Hahn 1978. "''Meketibolodon'' (Hahn 1993) is distinguished from the other genera f Paulchoffatiidaeby two characters: the tooth row is significantly convexly curved upwards, and the corpus mandibulae has angled margins ventrally (Hahn and Hahn 1998b). The incisor is more strongly curved than it is the case in ''

Paulchoffatia ''Paulchoffatia'' is a genus of extinct mammal of the Upper Jurassic - Lower Cretaceous. It was a relatively early member of the also extinct order Multituberculata, within the suborder "Plagiaulacida" and family Paulchoffatiidae. It lived in Eur ...

'', and its root is longer. The corpus mandibulae is similarly massive to that in ''Paulchoffatia''" (Hahn and Hahn 2000, p. 105). The corpus mandibulae is the part of the lower jaw beneath the tooth row, and ''mekéti'' (μηκέτι) is

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

for 'no longer'.

References

* Hahn G. (1978), ''Neue Unterkiefer von Multituberculaten aus dem Malm Portugals''. Geologica et Palaeontologica 12, p. 177-212. ''(A new multituberculate lower jaw from the Malm of Portugal.)'' * Hahn G. and Hahn R. (2000), ''Multituberculates from the Guimarota mine'', p. 97-107 in Martin T & Krebs B (eds), ''Guimarota - A Jurassic Ecosystem'', Published by Dr Friedrich Pfeil, Münich, Germany. * Kielan-Jaworowska Z. and Hurum J.H. (2001), ''Phylogeny and Systematics of multituberculate mammals''. Paleontology 44, p. 389-429. * Much of this information has been derived fro

Multituberculata Cope, 1884. Multituberculata Late Jurassic mammals of Europe Fossils of Portugal Prehistoric mammal genera {{Jurassic-mammal-stub