Search the Community
Showing results for tags 'nova olinda'.
Found 3 results
-
The lower cretaceous sediments near Nova Olinda in Bras are rich in fossils like fishes, insect and plants. One of the nicest insects you can get are dragonflies. Today it is forbidden to dig and export, so only chance is to get some from old collections. This nice 4,7 cm wide Cordulagomphus fenstratus has no coloring or restaurations- 1 comment
-
- 5
-
-
- cretaceous
- dragonfly
- (and 1 more)
-
D. elongatus seems to be a junior synonym. References: Davis, S. and Martill, D. (2003) The Gonorynchiform fish Dastilbe from the Lower Cretaceous of Brazil. 2003, Palaeontology 42(4):715 - 740. DOI: 10.1111/1475-4983.00094 Alexandre C. Ribeiro, Francisco J. Poyato-Ariza, Flávio A. Bockmann and Marcelo R. de Carvalho (2018) Phylogenetic relationships of Chanidae (Teleostei: Gonorynchiformes) as impacted by Dastilbe moraesi, from the Sanfranciscana basin, Early Cretaceous of Brazil. Neotropical Ichthyology, 16(3): e180059, 2018 DOI: 10.1590/1982-0224-20180059 (ISSN 1982-0224)
-
Here are 5 insects from the lower cretaceous; specimens 1 and 2 (pics 2a, 2b) from the Yixian Formation, Huangbangi Valley, Beipiao (~ Barremian) specimens 3, 4 and 5 from Nova Olinda, Crato Formation, Brasilia (upper Aptian / lower Albian) Length: specimen 1 = 10 mm (body length) specimen 2 = 8 mm (head to the end of the longest wing) (Diptera?) specimen 3 = 10 mm (body length, head - tail) specimen 4 = 21 mm (total length) (Orthoptera) specimen 5 = 18 mm (total length) (Beetle: Dystiscidae?) Any suggestions are appreciated! (specimen 4 is a grasshopper, specimen 5 a beetle; but is it possible to say more about them?) An additional question: The small circular fossils which look like small bivalves on the Yixian specimens are conchostracans (Nestoria pissovi), but I wonder about the brownish striations on the Nova Olinda material. They are suggestive of trace fossils, but otherwise they seem to show some organic matter similar to the body fossils.They are extremely common on the plates with Crato fossils. Does someone know what they are? Thank you very much! araucaria1959
