Reexamination of previously described conulariids has shown that the morphology of steeply pyramidal, generally four-sided conulariid exoskeletons is more complex than was realized by earlier generations of conulariid specialists (e.g., Van Iten, 1992a, 1992b; Jerre, 1994; Van Iten et al., 1996). Much of this complexity is expressed as variation in the anatomy of the corners and midlines (Van Iten, 1992a). In nearly all conulariids, the corners are sulcate, and in some genera (e.g., ArchaeoconulariaBouček, 1939 and PseudoconulariaBouček, 1939) the longitudinal center line, or midline, of the faces also is sulcate or...
NEW DATA ON THE ANATOMY OF CONULARIA MILWAUKEENSIS CLELAND, 1911 (MIDDLE DEVONIAN, IOWA AND WISCONSIN)
HEYO VAN ITEN, JULIANA DE MORAES LEME, SABRINA COELHO RODRIGUES, MARCELLO GUIMARÃES SIMÕES; NEW DATA ON THE ANATOMY OF CONULARIA MILWAUKEENSIS CLELAND, 1911 (MIDDLE DEVONIAN, IOWA AND WISCONSIN). Journal of Paleontology ; 80 (2): 392–395. doi: https://doi.org/10.1666/0022-3360(2006)080[0392:NDOTAO]2.0.CO;2
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