Nalacetus
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Nalacetus is an extinct pakicetid early whale, fossils of which have been found in Lutetian red beds in Punjab, Pakistan (Script error: No such module "Coordinates"., paleocoordinates Script error: No such module "Coordinates".).[1][2] Nalacetus lived in a fresh water environment, was amphibious, and carnivorous. It was considered monophyletic by Script error: No such module "Footnotes"..[1] It was said to be wolf-sized and one of the earliest forms of the order Cetacea.
Nalacetus is known mostly from dental remains from the Lutetian of the Kala Chitta Hill, Punjab, Pakistan:[3]
- H-GSP[Explain 1] 96055, right palatal fragment with P4 and M1−2.
- H-GSP 30306, right maxillary fragment with P2 and partial P3−4; a fragmentary mandible with fragmented teeth together with some isolated lower teeth.
In the cheek teeth of Pakicetus, the protocone lobe increases from the first molar to the third. In Nalacetus, in contrast, the protocone lobe is larger in the first molar than in the second.[3]
Notes
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- ↑ Howard University-Geological Survey of Pakistan Project
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- ↑ a b Template:Paleodb. Retrieved June 2013.
- ↑ Template:Paleodb. Retrieved June 2013.
- ↑ a b Script error: No such module "Footnotes".
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References
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