Ultrastructure of uterine trophonemata, accommodation for uterolactation, and gas exchange in the southern stingray, Dasyatis americana. Canadian Journal of Zoology, 74(8), 1417–1430
DOI: 10.1139/z96-157
Ultrastructure of fetal alimentary organs: stomach and spiral intestine in the southern stingray, Dasyatis americana. Canadian Journal of Zoology, 74(8), 1431–1443
DOI: 10.1139/z96-158
Uterogestation and Placentation in Elasmobranchs. Journal of Experimental Zoology, 266, 347–367
Helicoprion (Edestidae) in the Permian of West Texas. Journal of Paleontology, 50(5), 992–994