Aviatyrannis

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Aviatyrannis
Temporal range:
Ma
Diagram of fossils assigned to Aviatyrannis
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Clade: Saurischia
Clade: Theropoda
Clade:
Tyrannoraptora
Superfamily: †Tyrannosauroidea
Clade: †
Pantyrannosauria
Genus: †Aviatyrannis
Rauhut, 2003
Species:
†A. jurassica
Binomial name
†Aviatyrannis jurassica
Rauhut, 2003

Aviatyrannis is a

stages of the Late Jurassic found in Portugal
.

Discovery and naming

In 2000

genitive.[2] The specific name means "Jurassic".[2]

The

dentary.[2] These had in 1998 been described by Jens Zinke.[3] Rauhut also hypothesised that a number of specimens referred to Stokesosaurus might actually belong to Aviatyrannis.[2]

Description

Estimated size of Aviatyrannis (here depicted as a tyrannosauroid).

Aviatyrannis was a rather small theropod. The holotype specimen IPFUB Gui Th 1, for example, is an ilium only ninety millimeters long. In 2016, Gregory S. Paul estimated its length at 1 m (3.3 ft) and its body mass at 4 kg (8.8 lb); he also suggested that the holotype possibly belongs to a juvenile.[4] The ilium is elongated and low with the typical tyrannosauroid vertical ridge on the outer blade surface above the hip joint.[2] The teeth of the praemaxilla have a D-shaped cross-section. The maxillary and dentary teeth are elongated, only recurving near the top, with perpendicular denticles on both edges. Their bases are circular in cross-section; the top of the tooth crown is more flattened.[3]

Classification

Aviatyrannis was in 2003 by Rauhut placed in the

phylogenetic analyses are displayed in the cladogram below:[5]

Ornithomimosauria

See also

References

  1. ^ Rauhut, O.W.M., 2000, "The dinosaur fauna from the Guimarota mine", pp 75-82 In: Martin and Krebs (eds.). Guimarota - A Jurassic Ecosystem Verlag Dr. Friedrich Pfeil, München
  2. ^
    doi:10.1111/1475-4983.00325
    .
  3. ^ a b Zinke, J., 1998, "Small theropod teeth from the Upper Jurassic coal mine of Guimarota (Portugal)", Paläontologische Zeitschrift 72(1/2): 179-189
  4. OCLC 985402380
    .
  5. PMC 10484975
    .
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