Brancoceras
From Infogalactic: the planetary knowledge core
| Brancoceras Temporal range: early to middle Albian
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Brancoceras
Steinmann, 1881
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Brancoceras is a rather small, strongly ribbed, acanthoceratacean ammonite from the Albian stage of the Lower Cretaceous, the shell evolute with a subquadrate whorl section and rounded venter. The suture forms a finely squiggly line with well defined lobes and saddles. Brancoceras (Eubrancoceras) aegoceratoides reached a diameter of at least 4.2 centimetres (1.7 in).
Brancoceras is representative of the subfamily Branoceratinae, which makes up part of the acanthoceratacean family Brancoceratidae. Its stratigraphic range is rather narrow, extending only from the upper Lower to the Middle Albian.
References
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- Ryszard Marcinowski and Jost Wiedmann. The Albian Ammonites of Poland. Palaeontologia Polonica no. 50, 1990
