This is a Cretaceous aged fossil oyster of the species Rastellum carinatum from Dalmiapuram. It has wide, angled ribs that have led to it being called the ‘denture clam’. The zig-zag join between the two shells stopped coarse dirt and debris entering the shell and damaging its soft body. Like modern oysters it lived in […]
Archive for April, 2015
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Paralycoptera: first dinosaur-era fish from HongKong
April 3rd, 2015 
Riffin A ~147 million-year-old Jurassic-aged osteoglossoid osteoglossomorph fish Paralycoptera from outcrops at Lai Chi Chong has been described. This fossil represents the first dinosaur-era fish — as well as vertebrate — from Hong Kong to be identified. The fossil was rediscovered in the collections of the Stephen Hui Geological Museum by Mr. Edison Tse Tze-kei, graduate […]
Saurichthys rieppeli, a new species of bony fish from the Middle Triassic
April 1st, 2015 Riffin Working with an international team, paleontologists at the University of Zurich have discovered two new species of Saurichthys. The ~242 million year old predatory fishes were found in the fossil Lagerstätte Monte San Giorgio, in Ticino. They are distinct from previously known Saurichthys species in the shape of the head and body, suggesting different habitats […]
