Amblotherium gracilis Marsh 1879 (mammal)

Mammalia - Theriiformes - Dryolestidae

Alternative combinations: Amblotherium gracile, Stylacodon gracilis

Invalid subtaxa: Amblotherium debile Marsh 1881, Amblotherium debilis Marsh 1881, Dryolestes gracilis Marsh 1881 [replaced name], Laodon venustus Marsh 1887

Belongs to Amblotherium according to Z. Kielan-Jaworowska et al. 2004

See also Engelmann and Callison 1998, Hay 1902, Kraus 1979, Marsh 1881, Marsh 1887, Prothero 1981, Simpson 1927 and Simpson 1929

Sister taxa: Amblotherium nanum, Amblotherium pusillum, Amblotherium soricinum, Kepolestes coloradensis, Miccylotyrans minimus

Type specimens:

  • Amblotherium gracilis: YPM 11883, a mandible (left mandible comprising a toothless anterior portion, the impression of the middle portion, and a posterior portion with P4, M1-4, and P3). Its type locality is Quarry 9, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian fluvial-lacustrine mudstone/sandstone in the Morrison Formation of Wyoming.
  • Amblotherium debilis: YPM 13728, a mandible (left mandible with M1-6 and roots or alveoli of other teeth). Its type locality is Quarry 9, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian fluvial-lacustrine mudstone/sandstone in the Morrison Formation of Wyoming.
  • Dryolestes gracilis: YPM 11883, a mandible (left mandible comprising a toothless anterior portion, the impression of the middle portion, and a posterior portion with P4, M1-4, and P3). Its type locality is Quarry 9, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian fluvial-lacustrine mudstone/sandstone in the Morrison Formation of Wyoming.
  • Laodon venustus: USNM 2142, a mandible (left mandible with P3-4 and M1-7). Its type locality is Quarry 9, Como Bluff (YPM), which is in a Kimmeridgian/Tithonian fluvial-lacustrine mudstone/sandstone in the Morrison Formation of Wyoming.

Ecology: scansorial insectivore

Distribution:

• Jurassic of United States (3: Utah, Wyoming collections)

Total: 3 collections each including a single occurrence

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Specimen images are retrieved through the ePANDDA API.


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