Permian tetrapods from the Sahara show climate-controlled endemism in Pangaea

Article Abstract:

A study is carried out on the new fossils from the Upper Permian Moradi Formation of northern Niger, which provides an insight into the faunas that inhabited in low-latitude, xeric environments near the end of the Palaeozoic era. The findings of the study suggest that faunas from the poorly sampled xeric belt differed markedly form well-sampled faunas that dominated tropical-to-temperate zones.

Niger

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A polydactylous amniote from the Triassic period

Article Abstract:

A preaxial form of polydactyl, in which extra digits are positioned anterior to the first digits, is discovered. The organism has unexpectedly re-emerged in a marine reptile from the Early Triassic period about 242 million years ago. The overall morphology of both the manus and pes closely resemble those of earliest tetrapods.

Natural history, Polydactyly

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A larval Devonian lungfish

Article Abstract:

The Palaeospondylus gunni Traquair, a tiny vertebrate fossil from the middle Devonian period, was found in a single site where it is widely available. It is the oldest known true larva of a vertebrate.

Larvae, Lung-fishes, Lungfishes

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