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- Haplopleuroceras abstract "Haplopleuroceras is a Middle Jurassic ammonite and likely member of the Hildoceratacean family Sonniniidae with which it shares the same sort of ribbing. Haplopleuoceras has a small, strongly ribbed, evolute shell of about 21⁄2 volutions. Whorl section is subquadrate, slightly compressed, flanks slightly convex, venter rounded. Ribs are undivided, smooth, moderately concave, and slope forward on the ventro-lateral region to form chevrons pointing toward the aperture. The venter on the outer rim is bisected by a rounded keel bordered by distincct but shallow grooves, interrupting the ribbing in the middle of the chevrons. Haplopleuroceras shares its simple undivided ribbing with the contemporary Sonniniidae in which it probably belongs (e.g. Treatise L, 1957) although others since then (e.g. Donovan et al. 1981) have removed it to the Hammitoceratidae. The Hammitoceratidae, the oldest of which predate the Sonniniidae so as to be their most likely predecessors, are however characterized by primary and secondary ribs which bifurcate on the flanks and cross the venter, often transversely.".
- Haplopleuroceras wikiPageExternalLink Donovan,%20Callomon,%201981_J%20Ammon.PDF.
- Haplopleuroceras wikiPageID "16783808".
- Haplopleuroceras wikiPageRevisionID "552856566".
- Haplopleuroceras authority "Buckman, 1892".
- Haplopleuroceras fossilRange "Lower to Middle Bajocian".
- Haplopleuroceras hasPhotoCollection Haplopleuroceras.
- Haplopleuroceras taxon "Haplopleuroceras".
- Haplopleuroceras subject Category:Ammonitida.
- Haplopleuroceras subject Category:Jurassic_ammonites.
- Haplopleuroceras type Ammonite109195958.
- Haplopleuroceras type Fossil109284589.
- Haplopleuroceras type JurassicAmmonites.
- Haplopleuroceras type Object100002684.
- Haplopleuroceras type PhysicalEntity100001930.
- Haplopleuroceras type Remains109407346.
- Haplopleuroceras type Mollusk.
- Haplopleuroceras comment "Haplopleuroceras is a Middle Jurassic ammonite and likely member of the Hildoceratacean family Sonniniidae with which it shares the same sort of ribbing. Haplopleuoceras has a small, strongly ribbed, evolute shell of about 21⁄2 volutions. Whorl section is subquadrate, slightly compressed, flanks slightly convex, venter rounded. Ribs are undivided, smooth, moderately concave, and slope forward on the ventro-lateral region to form chevrons pointing toward the aperture.".
- Haplopleuroceras label "Haplopleuroceras".
- Haplopleuroceras sameAs Haplopleuroceras.
- Haplopleuroceras sameAs m.0405_ty.
- Haplopleuroceras sameAs Q12258882.
- Haplopleuroceras sameAs Q12258882.
- Haplopleuroceras sameAs Haplopleuroceras.
- Haplopleuroceras wasDerivedFrom Haplopleuroceras?oldid=552856566.
- Haplopleuroceras isPrimaryTopicOf Haplopleuroceras.