Nursallia
sp. nov.
Pycnodontiformes,
Pycnodontidae
Geologic
Time: Middle Cretaceous, Cenomanian Stage (93 mya)
Size (25.4
mm = 1 inch): 30 mm long, 25 mm tall on a 60 mm by 60 mm matrix
Fossil
Site: Lebanese Lagerstatt, en-Nammoura, Lebanon
Known
for its incredibly well-preserved fish and crustaceans, the sublithographic
limestone of the Cretaceous of Lebanon also preserved incredible
detail here as well in this newly-discovered Pynodont taxon known
as Nursallia. The family derives its name from the Greek for “thick
tooth”. These fish led a durophagous existence, crushing the
shells of shellfish and crustaceans (note the teeth). The genus
was erected in 1987 to house several fish that were previously assigned
to Paleobalistum, a genus which now consists solely of the fish
P. orbiculatum. The en-Nammoura location is quite different in its
fauna from either Hajoula or Hakel. It is thought to have been slightly
younger than either of those locations. Based upon a high level
of preserved terrestrial plants, it is further thought to have been
closer to land, albeit islands rather than the continental coastline.
Fish are far more rare at en-Nammoura, with very few recorded multiple
specimens found. The taxon is different from Nursallia goedeli from
the nearby deposits of Hakel and Hajoula, and is thought to be a
new species. As of 2003, only TWO other examples were known, both
of which reside in the Natural History Mueum, London. This is a
fine example of the preservation for which the region is famous,
and would be a welcome addition to any collection of fish.
Also
see: Paleobalistum goedeli
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