Microsauria ("small lizards") is an extinct, possibly polyphyletic [1] order of tetrapods from the late Carboniferous and early Permian periods. It is the most diverse and species-rich group of lepospondyls.

Nov 28, 2019 · Fossils of hard and soft parts that are too small to be observed by the naked eye are called microfossils. Some fossils are completely devoid of plant and animal parts but show evidence of an organism’s activities.

Microsauria ("small lizards") is an extinct, possibly polyphyletic order of tetrapods from the late Carboniferous and early Permian periods. It is the most diverse and species-rich group of lepospondyls.

Introduction: The microsaurs ("small lizards") are a diverse group of small prehistorical amphibians of the Carboniferous and Permian periods. Some were terrestrial and lizard-like, others aquatic and newt-like. There were even specialised burrowing forms.

Sep 21, 2021 · We present a new partial skull of the recumbirostran “microsaur” Nannaroter mckinziei; through computed tomography (CT) analysis of both this new specimen and the holotype, we provide an updated description of the taxon.

Twenty-five general of microsaurs are recognized in this work. Contents: History of the Microsaur Concept; Definition of Micrausaurs; Methods of Study; Taxonomy; Systematic Description; Comparative...

Originally based on a reptile, Hylonomus lyeili, by Dawson in 1863, the Order Microsauria has long been restricted to these small amphibians (Romer, 1950). Repeated confusion between primitive captorhinomorph reptiles and microsaurs stems from superficial similarities between both skulls and vertebrae.

Aug 1, 2015 · Microsaurs resemble both urodeles and gymnophionans in their double occipital joint and otic region. They differ from Lissamphibia in the absence of a non-calcified zone in the teeth. At present, no criteria indicate decisively which structures developed convergently.

Sep 1, 2008 · Previously undescribed specimens of the aquatic microsaur Microbrachis pelikani Fritsch from the Upper Carboniferous of Nýřany, Czech Republic, demonstrate the presence of a deep-swimming-adapted tail supported by up to 46 postsacral vertebrae. The tail appears to have lengthened with ontogeny.

The meaning of MICROSAURIA is an order of extinct amphibians (suborder Lepospondyli) of the Pennsylvanian and Lower Permian that resemble salamanders, are sometimes considered ancestral to modern apodal and caudate amphibians, or are placed among the primitive reptiles.