Siegel, D.S., Sever, D.M., Gribbins, K.M., and Rheubert, J.L. 2009. Reproductive biology of Agkistrodon piscivorus (Squamata, Serpentes, Viperidae): insights into the reproductive cycles and morphology of squamates. Herpetological Monographs 23:74-107.

Sever, D. M. 2010. Ultrastructure of the reproductive system of the Black Swamp Snake (Seminatrix pygaea). VI. Anterior testicular ducts and their nomenclature. J Morphology 271:104-115.

Gribbins, K.M., Rheubert, J.L., Anzalone, M. L., Siegel, D.S., and D.M. Sever. 2010.Ultrastructure of spermiogenesis in the Cottonmouth, Agkistrodon piscivorus (Squamata: Viperidae: Crotalinae). Journal of Morphology 271.293-304.

Rheubert, J. L., McMahan, C. D., Sever, D. M., Bundy, M. R., Siegel, D. S., and Gribbins, K. M. 2010. Ultrastructure of the reproductive system of the black swamp snake (Seminatrix pygaea). VII. Spermatozoon morphology and evolutionary trends of sperm characters in snakes. Journal of Zoological Systematics and Evolutionary Research.48:366-375.

Siegel D. S., Sever D. M., Aldridge R.D. 2010. The pelvic kidney of male Ambystoma maculatum (Amphibia, Urodela, Ambystomatidae) with special reference to the sexual collecting ducts. Journal of Morphology 271:1422-1 439.

Rheubert J. R., Sever D. M., Geheber, A. D., Siegel DS. 2010. Proximal testicular ducts of the Mediterranean Gecko (Hemidactylus turcicus) with special reference to the rete testis. Anatomical Record 293:2176-2192.

Siegel D. S., Trauth S.E., Sever D. M., Aldridge R. D. 2011. The phylogenetic distribution of the ampulla ureter and ampulla urogenital/urrinferous papilla in the Serpentes. Journal of Zoological Systematics and Evolutionary Research 49:160-168.

Trauth, S. E. and D. M. Sever. 2011. Male urogenital ducts and cloacal anatomy. In Aldridge, R. D. and D. M. Sever (eds.), Reproductive Biology and Phylogeny of Snakes. CRC Press, Boca Raton, FL. Pp. 411-475.

Rheubert, J. L., Murray, C. M., Siegel, D. S., Babin, J. and D. M. Sever. 2011. The Sexual segment of Hemidactylus turcicus and the evolution of sexual segment location in Squamata. Journal of Morphology 272:802-813..

Rheubert, J. L., Siegel, D. S., Venable, K. J., Sever, D. M., and Gribbins, K. M. 2011. Ultrastructural description of spermiogenesis within the Mediterranean Gecko, Hemidactylus turcicus (Squamata: Gekkonidae). Micron 42:680-690.

Sever, D. M. and L. R. Freeborn. 2012. Obervations on the anterior testicular ducts in snakes with emphasis on sea snakes and ultrastructure in the Yello-Bellied Sea Snake, Pleamis platurus. Journal of Morphology 273:324-336.

Sever, D. M., Rheubert, J. L., Gautreaux, J., Hill, T. G., and L. R. Freeborn. 2012. Observations on the sexual segment of the kidney of snakes with emphasis on ultrastructure in the Yellow-Bellied Sea Snake, Pelamis platurus. Anatomical Record 295:872-885.

Sever, D. M., Rheubert, J. L., Hill, T. A., and D. S. Siegel. 2013. Observations on variation in the ultrastructure of the proximal testicular ducts of the Ground Skink, Scincella lateralis (Reptilia: Squamata). Journal of Morphology 274:429-446.

Rheubert, J. L., Cree, A., Downs, M., and D. M. Sever. 2013. Reproductive morphology of the male Tuatara, Sphenodon punctatus. Acta Zoologica 94: 454-461.