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Kouriogenys minor
Taxonomy
Spalacotherium minus was named by Owen (1871). Its type specimen is BMNH 47751, a mandible (a left dentary fragment preserving a portion of the distal dentary, alveoli for the p1–p3 and m3, roots of the p4 and crowns of the p5 and m1–m2), and it is a 3D body fossil. Its type locality is Mammal Bed, Durlston Bay (DB83), which is in a Berriasian marine horizon in the Lulworth Formation of the United Kingdom. It is the type species of Kouriogenys.
It was synonymized subjectively with Peramus tenuirostris by Simpson (1928); it was recombined as Kouriogenys minor by Davis (2012).
It was synonymized subjectively with Peramus tenuirostris by Simpson (1928); it was recombined as Kouriogenys minor by Davis (2012).
Synonymy list
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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.
†Kouriogenys minor Owen 1871
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Diagnosis
Reference | Diagnosis | |
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B. M. Davis 2012 | Differs from other peramurids in having a p4 shorter in mesiodistal length than p5 and a single-rooted p1; differs from Peramus in less development of cusps e and f on distal molars; differs from Peramuroides gen. nov. in larger size, trigonid angle on m1 of 90 degrees and m2 and m3 subequal in mesiodistal length; differs from Tendagurutherium in absence of evidence for a coronoid bone and shorter distance between m3 and the ascending ramus. |
Measurements
No measurements are available
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Source: c = class, subp = subphylum, uc = unranked clade | |||||
References: Hendy et al. 2009, Hopson 1973, Luo et al. 2003, Carroll 1988 |
Age range: Middle Berriasian or 145.00000 to 140.20000 Ma
Collections: one only
Time interval | Ma | Country or state | Original ID and collection number |
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Middle Berriasian | United Kingdom (England) | Spalacotherium minus (type locality: 72142) |