| Abathomphalus mayaroensis Bolli 1951 from: Huber, B.T. (1990):  Maestrichtian planktonic foraminifer biostratigraphy of the Maud Rise (Weddell Sea, Antarctica): ODP Leg 113 Holes 689B and 690C.  In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 113 Eds: Barker, P.F.Kennett, J.P.O'Connell, S.B.Pisias, N.G. p. 489-513 | . |  
		 	 
		 	| Notice: This catalogue page may contain unedited data. 
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		 	| Species Abathomphalus mayaroensis Bolli 1951 |  
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		 	| Discussion / Comments: |  
		 	| Caron (1985): This species is one of the more distinctive among the Globo-
truncanidae. The spiral side is slightly convex, the umbilical 
side slightly concave. The two peripheral keels are variably 
spaced, greatest separation occurring at the midpoints of the 
chambers. The keels are composed of short, radially oriented 
costeilae- A. mayaroensis diners from A. inlermedius in the 
presence of a double keel on all chambers of the last whorl.
 Van Eijden & Smit (1991):
 Remarks. Rare and usually rather small, with a weakly developed second keel, the encountered A. mayaroensis specimens are intermediate with A. intermedius (Bolli, 1951) at Sites 752, 754, and 758.
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		 	| Systematics: |  
			| 5
 Classis Foraminifera
 Familia Globotruncanidae
 Genus Abathomphalus
 Species Abathomphalus mayaroensis
 
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		 	| Synonym list: |  
		 	| Caron (1985): Huber (1990):
 Van Eijden & Smit (1991):
 
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		 	| References: |  
		 	| Bolli,H.M. (1951): The genus Globotruncana in Trinidad, B.W.I. . Journal of Paleontology Vol. 25 p. 187-199
 Caron,M. (1985): Cretaceous planktic foraminifera.
 In: Plankton stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 17–86
 Huber,B.T. (1990): Maestrichtian planktonic foraminifer biostratigraphy of the Maud Rise (Weddell Sea, Antarctica): ODP Leg 113 Holes 689B and 690C.
 In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 113 Eds: Barker, P.F.Kennett, J.P.O'Connell, S.B.Pisias, N.G. p. 489-513
 Van Eijden,A.J.M. and Smit,J. (1991): Eastern Indian Ocean Cretaceous and Paleogene quantitative biostratigraphy.
 In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 121 Eds: Weissel, J.Peirce, J.Taylor, E.Alt, J. p. 77-123
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