In Review

• Brennan, I.G.. (in revision). Integrating uncertainty is essential to macroevolutionary inferences: Grass, grit, and the evolution of kangaroos. bioRxiv

2025

• Donnellan, S.C., Brennan, I.G., ...(11 additional coauthors). (in press). Phylogenomics informs a generic revision of the Australo-Papuan treefrogs (Anura: Pelodryadidae). Zoological Journal of the Linnean Society. Download the paper here, or a table of the taxonomic changes.

2024

• Brennan, I.G., Chapple, D.G., Keogh, J.S., Donnellan, S.C. (2024). Evolutionary bursts drive morphological novelty in the world's largest skinks. Current Biology

• Brennan, I.G., Singhal, S., Al Bkhetan. (2024). pipesnake : Generalized software for the assembly and analysis of phylogenomic datasets from conserved genomic loci. Bioinformatics, bioRxiv, and GitHub

• Li, Y., Moritz, C.M., Brennan, I.G., Zwick, A., Nicholls, J., Grealy, A., Slipinski, A. (2024). Evolution across the adaptive landscape in a hyperdiverse beetle radiation. Current Biology

• Kosch, T., (many additional authors), ..., Brennan, I.G.. (2024). The Amphibian Genomics Consortium: advancing genomic and genetic resources for amphibian research and conservation. BMC Genomics

• Davis, H.R., Nashriq, I., Woytek, K.S., Wikramanayake, S.A., Bauer, A.M., Karin, B.R., Brennan, I.G., Iskandar, D.T., Das, I. (2024). Third time’s the charm: nomenclatural availability provided to the nomina of two Bornean Cyrtodactylus (Squamata, Gekkonidae). Bionomina

2023

• Davis, H.R., Nashriq, I., Woytek, K.S., Wikramanayake, S.A., Bauer, A.M., Karin, B.R., Brennan, I.G., Iskandar, D.T., Das, I. (2023). Redescription of two Bornean gekkonid lizard species of the Cyrtodactylus consobrinus (Peters, 1871) complex with comments on online supplementary material. Bionomina

• Brennan, I.G., Lemmon, A.R., Lemmon, E.M., Hoskin, C.J., Donnellan, S.C., Keogh, J.S. (2023). Populating a continent: Phylogenomics reveal the timing of Australian frog diversification. Systematic Biology

• Tiatragul, S., Brennan, I.G., Keogh, J.S. (2023). Australia’s hidden radiation: Phylogenomics analysis reveals rapid Miocene radiation of blind snakes. Molecular Phylogenetics and Evolution

• Chapple, D.G, Chapple, S.N.J., Smith, S.A., Shea, G.M., Brennan, I.G., Sadlier, R.A. (2023). Phylogenetic relationships in the Eugongylini (Squamata: Scincidae): generic limits and biogeography. Australian Journal of Zoology

• Sadlier, R.A., Beatson, C.A., Brennan, I.G., Bauer, A.M. (2023). A new species of spiny-tailed gecko from the mulga woodlands of inland Western Australia. Records of the Western Australian Museum )

• Marques, M.P., Parrinha, D., Ceríaco, L.M.P., Brennan, I.G., Heinicke, M.P., Bauer, A.M. (2023). A new species of thick-toed gecko from Serra da Neve and surrounding rocky areas of southwestern Angola. Vertebrate Zoology

2022

• Davis, H.R., Nashriq, I., Woytek, K.S., Wikramanayake, S.A., Bauer, A.M., Karin, B.R., Brennan, I.G., Iskandar, D.T., Das, I. (2022). Genomic analysis of Bornean geckos reveals need for updated taxonomy. Zoological Scripta

• Esquerré, D., Brennan, I.G., Donnellan, S., & Keogh, J.S. (2022). Evolutionary models demonstrate rapid and adaptive diversification of Australo-Papuan pythons. Biology Letters

• Pavón-Vázquez, C. J., Brennan, I.G., Skeels, A., & Keogh, J.S. (2022). Competition and geography underlie speciation and morphological evolution in Indo-Australasian monitor lizards. Evolution.

2021

• Heinz, M.D., Brennan, I.G., Jackman, T.R., Bauer, A.M. (2021). Phylogeny of the Genus Chondrodactylus (Squamata:Gekkonidae) with the establishment of a stable taxonomy. Bulletin of the Museum of Comparative Zoology

• Pavón-Vázquez, C. Brennan, I.G., Skeels, A., Keogh, J.S. (2021). Competition and geography underlie speciation and morphological evolution in Indo-Australasian monitor lizards. Evolution

• Melville, J., Brennan, I.G., (28 additional coauthors). (2021). A return-on-investment approach for prioritization of rigorous taxonomic research needed to inform responses to the biodiversity crisis. PLoS Biology

• Gurgis, G.P., Daza, J.D., Brennan, I.G., Hutchinson, M., Bauer, A.M., Stocker, M.R., Olori, J.C. (2021). Ecomorphometric analysis of disparity in cranial shape of pygopodid geckos. Integrative Organismal Biology

• Davis, H.R., Das, I., Leaché, A.D., Karin, B.R., Brennan, I.G., Jackman, T.R., Nashriq, I., Chan, K.O., Bauer, A.M. (2021). Genetically diverse yet morphologically conserved: Hidden diversity revealed among Bornean geckos (Gekkonidae: Cyrtodactylus). Journal of Zoological Systematics and Evolutionary Research. Journal of Zoological Systematics and Evolutionary Research

2020

• Pavón-Vázquez, C., Brennan, I.G., Keogh, J.S. (accepted). A comprehensive approach to detect hybridization sheds light on the origin of Earth's largest living lizard. Systematic Biology.

• Brennan, I.G., Lemmon, A.R., Lemmon, E.M., Portik, D.M., Weijola, V., Welton, L., Donnellan, S.C., Keogh, J.S. (2020). Phylogenomics of monitor lizards and the role of competition in dictating body size disparity. Systematic Biology, also on bioRxiv.

• Novikova, P.Y.*, Brennan, I.G.*, Booker, W., Mahony, M., Doughty, P., Lemmon, A.R., Lemmon, E.M., Yant, L., Peer, Y.V.d., Keogh, J.S., Donnellan, S.C. 2020. Polyploidy breaks speciation barriers in Australian burrowing frogs Neobatrachus. bioRxiv, PLoS Genetics
  * co-first authors

• Esquerré, D., Donnellan, S.C., Brennan, I.G., Zaher, H., Grazziotin, F., Lemmon, A.R., Lemmon, E.M., Keogh, J.S. 2020. Phylogenomics, biogeography, and morphometrics reveal rapid phenotypic evolution in pythons after crossing Wallace's line. Systematic Biology

• Maryan, B. Brennan, I.G., Hutchinson, M.N., Geidans, L.S. 2020. What's under the hood? Partial revision of the hooded snake genus Parasuta. Zootaxa

• Davis, H.R., Chan, K.O., Das, I., Brennan, I.G., Karin, B.R., Jackman, T.R., Brown, R., Iskandar, D.J., Nasir, I.N.M., Grismer, L., Bauer, A.M. 2020. Multilocus phylogeny of Bornean Bent-Toed Geckos (Gekkonidae: Cyrtodactylus) reveals hidden diversity, taxonomic disarray, and novel biogeographic patterns. Molecular Phylogenetics and Evolution 147

• Gallagher, R., Brennan, I.G., … (54 additional coauthors). 2020. The Open Traits Network: Using Open Science principles to accelerate trait-based science across the Tree of Life. Nature Ecology and Evolution

• El-Deeb, O., Skeels, A., Brennan, I.G.. 2020. Digest: The evolutionary relationship between environment and size in Australian rodents (Roycroft et al., 2019). Evolution 0(0):1--2

• Kealley, L., Doughty, P., Edwards, D., Brennan, I.G. 2020. Taxonomic assessment of pygopodoid gecko subspecies from Western Australia. Israel Journal of Ecology and Evolution 1:1--16.

2019

• Esquerré, D., Brennan, I.G., Catullo, R.A., Torres-Pérez, F., Keogh, J.S. 2019. How mountains shape biodiversity: The role of the Andes in biogeography, diversification, and reproductive biology in South America's most species-rich lizard radiation (Squamata: Liolaemidae). Evolution 73(2): 214--230

2018

• Brennan, I.G., Keogh, J.S. 2018. Miocene biome turnover drove conservative body size evolution across Australian vertebrates. Proceedings of the Royal Society B: Biological Sciences 285: 20181474.

• Pepper, M., Sumner, J., Brennan, I.G., Hodges, K., Lemmon, A.R., Lemmon, A.M., Peterson, G., Rabosky, D.L., Schwarzkopf, L., Scott, I.A.W., Shea, G., Keogh, J.S. 2018. Speciation in the mountains and dispersal by rivers: Molecular phylogeny of the Australian Eulamprus water skinks and the biogeography of Eastern Australia. Journal of Biogeography 2018; 45:2040--2052.

2017

• Brennan, I.G., Oliver, P.M. 2017. Mass turnover and recovery dynamics of a diverse Australian continental radiation. Evolution 71 (5):1352--1365.

• Brennan, I.G., Bauer, A.M., Van Tri, N., Wang, Yy., Wang, Wz., Zhang, YP., Murphy, R.W. 2017. Barcoding utility in a mega-diverse, cross-continental genus: keeping pace with Cyrtodactylus geckos. Scientific Reports 7:5592.

• Brennan, I.G., Bauer, A.M. 2017. Notes on hemipenial morphology and its implications in the Pygopodidae (Boulenger, 1884). Bonn zoological Bulletin 66 (1): 15-28.

2016

• Ziegler, T., Botov, A., Nguyen, T.T., Bauer, A.M., Brennan, I.G., Ngo, H.T., Nguyen, T.Q. 2016. First molecular verification of Dixonius vietnamensis Das, 2004 (Squamata: Gekkonidae) with the description of a new species from Vinh Cuu Nature Reserve, Dong Nai Province, Vietnam. Zootaxa 4136 (3):553-566.

• Brennan, I.G., Bauer, A.M., Jackman, T.R. 2016. Mitochondrial introgression via ancient hybridization, and systematics of the Australian endemic pygopodid gecko genus Delma. Molecular Phylogenetics and Evolution 94 (2016): 577--590.

2015

• Botov, A., Trung, P.M., Truong, Q.N., Brennan, I.G., Bauer, A.M., Ziegler, T. 2015. A new species of Dixonius (Squamata: Gekkonidae) from Phu Quy Island, Vietnam. Zootaxa 4040 (1):048--058.

• Maryan, B., Brennan, I.G., Adams, M., Aplin, K.P. 2015. Molecular and morphological assessment of Delma australis (Squamata: Pygopodidae) with description of a new species from the biodiversity 'hotspot' of southwestern Western Australia. Zootaxa 3946 (3): 301--330.

• Jono, T., Bauer, A.M., Brennan, I.G., Mori, A. 2015. A new species of Blaesodactylus (Squamata: Gekkonidae) from Tsingy karstic outcrops in Ankarana National Park, northern Madagascar. Zootaxa 3980 (3): 406--416.

2012

• Brennan, I.G. 2012. Natural History Notes. Osteophagy by Agassiz’s Desert Tortoise Gopherus agassizii. Herpetological Review 43 (4):638-–639.

Theses

• Brennan, I.G. Macroevolution across a changing Australian landscape. PhD Thesis 2019. Australian National University, Canberra, ACT, Australia, 203 pp. Link

• Brennan, I.G. Interspecific and intraspecific relationships and biogeography of flap-footed geckos Delma. M.Sc. Thesis 2014. Villanova University, Villanova, PA, USA, 143 pp.