. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. Fig. 14. Hebertella borealis (Billings). A specimen with a very short hinge- line. St. Martin Junction. Natural size. the pedicle valve is high and incurved, with a narrow delthyrium The surface is marked by from twenty to thirty broad, simple plications,. separated by \evy narrow grooves. This species is commonly reported from the Trenton of Canada,. Kentucky, Tennessee, and Minnesota, but the shells so identified have a deeper sinus in the pedicle valve and do not have a sinus in the brachi
. Annals of the Carnegie Museum. Carnegie Museum; Carnegie Museum of Natural History; Natural history. Fig. 14. Hebertella borealis (Billings). A specimen with a very short hinge- line. St. Martin Junction. Natural size. the pedicle valve is high and incurved, with a narrow delthyrium The surface is marked by from twenty to thirty broad, simple plications,. separated by \evy narrow grooves. This species is commonly reported from the Trenton of Canada,. Kentucky, Tennessee, and Minnesota, but the shells so identified have a deeper sinus in the pedicle valve and do not have a sinus in the brachial valve. Professor Foerste has recently given the name Hebertella jrankjortensis to the form which occurs in the Trenton. (Hulletin Denison University, 1909, p. .^18, PI. YH, figs. 11 A, B.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Carnegie Museum; Carnegie Museum of Natural History. [Pittsburgh] : Published by authority of the Board of Trustees of the Carnegie Institute
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
