Name:
Herbstosaurus
(Herbst lizard).
Phonetic: Herb-st-oh-sore-us.
Named By: Rodolfo Magín Casamiquela - 1974.
Classification: Chordata, Reptilia, Pterosauria,
Pterodactyloidea, Dsungaripteroidea.
Species: H. pigmaeus (type).
Type: Unknown.
Size: Unlnown due to incomplete fossil matereial.
Known locations: Argentina - Vaca Muerta Formtion.
Time period: Tithonian of the Jurassic.
Fossil representation: Sacrum, fragmentary pelvis
and both femurs. When realised to be a pterosaur, other fragmentary
remains found at the dig site and belonging to a then unidentified
pterosaur were also attributed to the genus.
It
was once thought that Herbstosaurus represented one
of the first
pterosaurs
of the more advanced Pterodactyloidea, however it is now
realised that it recovered from a Vaca Muerta Formation which dated as
being from the Tithonian. Herbstosaurus has
continued to cause some
disagreement between palaeontologists as to its exact position within
the pterosauria.
Herbstosaurus
was described as a small theropod dinosaur until 1978 when the
palaeontologist John Ostrom first put forward the idea that it was
actually a pterosaur.
Further reading
- Herbstosaurus pigmaeus (Coeluria, Compsognathidae) n. gen. n. sp. del
Jurásic medio del Neuquén (Patagonia septentrional). Uno de los más
pequeños dinosaurios conocidos [Herbstosaurus pigmaeus (Coeluria,
Compsognathidae) n. gen. n. sp. from the Middle Jurassic of Neuquén
(northern Patagonia). One of the smallest known dinosaurs]. - Actas del
Primer Congreso Argentino de Paleontologia y Bioestratigrafia, Tucumán
2:87-103. - R. M. Casamiquela - 1975.