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Volaticotherium antiquus
Taxonomy
Volaticotherium antiquus was named by Meng et al. (2006). Its type specimen is IVPP V14739, a skeleton (squashed skeleton preserved in the part and counterpart), and it is a compression fossil. Its type locality is Daohugou (IVPP collection), which is in a Callovian lacustrine - large shale/tuff in the Tiaojishan Formation of China. It is the type species of Volaticotherium.
Synonymy list
| Year | Name and author |
|---|---|
| 2006 | Volaticotherium antiquus Meng et al. p. 889 |
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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.
†Volaticotherium antiquus Meng et al. 2006
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Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Meng et al. 2006 | A small squirrel-sized mammal that differs from all known Mesozoic mammals in having the following features: presence of a sizable furry patagium; elongated limb bones; femur with a small, ovoid-shaped head that lacks a neck; hallux diverging medially; proximal phalanges with pronounced flexor-sheath ridges; long tail with elongated and dorsoventrally flat caudal vertebrae and haemal arches; a highly differentiated dentition with a dental formula of
I3-C1-P4-M3/I2-C1-P4-M2; incisors small and conical; canines long and sharp; molariforms with tall, sharp and posteriorly recumbent cusps that are aligned in line but are deeply separated; cusps of lower molariforms are more posteriorly recumbent and tightly packed than the uppers; cusp d of m1 labially overlapping cusp b of m2 |
Measurements
No measurements are available
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| Source: g = genus, c = class, subp = subphylum, uc = unranked clade | |||||
| References: Hopson 1973, Hendy et al. 2009, Luo et al. 2003, Meng et al. 2006, Carroll 1988 | |||||
Age range: Early/Lower Callovian or 164.70000 to 161.20000 Ma
Collections: one only
| Time interval | Ma | Country or state | Original ID and collection number |
|---|---|---|---|
| Early/Lower Callovian | China (Nei Mongol) | Volaticotherium antiquus (type locality: 27891) |