@article {7151,
	title = {Lower Jurassic (Liassic) invertebrates from Makhtesh ramon (Negev, Southern Israel)},
	journal = {Israel Journal of Earth-Sciences},
	volume = {29},
	year = {1980},
	pages = {107-113},
	keywords = {bivalvia, jurassic, mollusca, paleontology, pteriidae, pterioida, pterioidea, pteroperna, taxonomy},
	author = {Parnes, A.}
}
@article {1463,
	title = {Lower Jurassic (Liassic) invertebrates from Makhtesh ramon (Negev, Southern Israel)},
	journal = {Israel Journal of Earth-Sciences},
	volume = {29},
	year = {1980},
	pages = {107-113},
	keywords = {bivalvia, jurassic, mollusca, paleontology, pteriidae, pterioida, pterioidea, pteroperna, taxonomy},
	author = {Parnes, A.}
}
