Breuer, P., Al-Ghazi, A., Al-Ruwali, M., Higgs, K.T., Steemans, P., Wellman, C.H., Early to Middle Devonian miospores from northern Saudi Arabia. Revue de Micropaléontologie 50 (2007), 27–57.
Burgess, N.D., Silurian cryptospores and miospores from the type Llandovery area, south-west Wales. Palaeontology 34 (1991), 575–599.
Gray, J., Massa, D., Boucot, A.J., Caradocian land plant microfossils from Libya. Geology 10 (1982), 197–201.
Le Hérissé, A., Al-Ruwaili, M., Miller, M., Vecoli, M., Environmental changes reflected by palynomorphs in the early Middle Ordovician Hanadir Member of the Qasim Formation, Saudi Arabia. Revue de Micropaléontologie 50 (2007), 3–16.
Le Hérissé, A., Guidat, C., Not, F., Vecoli, M., Breuer, P., Wellman, P., Steemans, P., Middle Ordovician acritarchs and problematic organic-walled microfossils from the Saq-Hanadir transitional beds in the QSIM-801 well, Saudi Arabia. Revue de Micropaléontologie., 2017, 10.1016/j.revmic.2017.08.001 (this volume).
Miller, M.A., Eames, L.E., Palynomorphs from the Silurian Medina Group (Lower Llandovery) of the Niagara Gorge, Lewiston, New York, USA. Palynology 6 (1982), 221–254.
Ottone, E.G., Albanesi, G.L., Ortega, G., Holfeltz, G.D., Palynomorphs, conodonts and associated graptolites from the Ordovician Los Azules formation, Central Precordillera, Argentina. Micropaleontology 45 (1999), 225–250.
Richardson, J.B., Late Ordovician and Early Silurian cryptospores and miospores from northeast Libya. El-Arnauti, A., Owens, B., Thusu, B., (eds.) Subsurface palynostratigraphy of northeast Libya, 1988, Garyounis University Publications, Benghazi, Libya, 89–109.
Rubinstein, C.V., Vaccari, N.E., Cryptospore assemblages from the Ordovician/Silurian boundary in the Puna region, north-west Argentina. Palaeontology 47 (2004), 1037–1061.
Rubinstein, C.V., Gerrienne, P., De La Puente, G.S., Astini, R.A., Steemans, P., Early Middle Ordovician evidence for land plants in Argentina (eastern Gondwana). New Phytologist 188 (2010), 365–369.
Rubinstein, C.V., de la Puente, G.S., Delabroye, A., Astini, R.A., The palynological record across the Ordovician/Silurian boundary in the Cordillera Oriental, Central Andean Basin, northwestern Argentina. Review of Palaeobotany and Palynology 224 (2016), 14–25.
Spina, A., Latest Ordovician (Hirnantian) miospores from the NL-2 well, Algeria, North Africa, and their evolutionary significance. Palynology 39 (2015), 205–219.
Steemans, P., Miospore evolution from the Ordovician to the Silurian. Review of Palaeobotany and Palynology 113 (2000), 189–196.
Steemans, P., Le Hérissé, A., Bozdogan, N., Ordovician and Silurian cryptospores and miospores from Southeastern Turkey. Review of Palaeobotany and Palynology 93 (1996), 35–76.
Steemans, P., Le Hérissé, A., Melvin, J., Miller, M.A., Paris, F., Verniers, J., Wellman, C.H., Origin and radiation of the earliest vascular land plants. Science, 324, 2009, 353.
Strother, P.K., A classification scheme for the Cryptospores. Palynology 15 (1991), 219–236.
Strother, P.K., Al-Hajri, S., Traverse, A., New evidence for land plants from the lower Middle Ordovician of Saudi Arabia. Geology 24 (1996), 55–59.
Strother, P.K., Traverse, A., Vecoli, M., Cryptospores from the Hanadir Shale Member of the Qasim Formation, Ordovician (Darriwilian) of Saudi Arabia: taxonomy and systematics. Review of Palaeobotany and Palynology 212 (2015), 97–110.
Traverse, A., Paleopalynology. Second Edition, 2008, Springer.
Vavrdová, M., Some plant microfossils of possible terrestrial origin from the Ordovician of Central Bohemia. Vestnik Ustredniho Ustavu Geologickeho 3 (1984), 165–170.
Vecoli, M., Delabroye, A., Spina, A., Hints, O., Cryptospore assemblages from Upper Ordovician (Katian-Hirnantian) strata of Anticosti Island, Quebec, Canada, and Estonia: palaeophytogeographic and palaeoclimatic implications. Review of Palaeobotany and Palynology 166 (2011), 76–93.
Vecoli, M., Beck, J., Strother, P., Palynology of the Ordovician Kanosh Shale at Fossil Mountain. Journal of Paleontology 89 (2015), 424–447.
Wellman, C.H., Cryptospores from the type area for the Caradoc Series (Ordovician) in southern Britain. Palaeontology 55 (1996), 103–136.
Wellman, C.H., Richardson, J.B., Terrestrial plant microfossils from Silurian inliers of the Midland Valley of Scotland. Palaeontology 36 (1993), 155–193.
Wellman, C.H., Gray, J., The microfossil record of early land plants. Philosophical Transaction of the Royal Society, London B 355 (2000), 717–732.
Wellman, C.H., Osterloff, P.L., Mohiuddin, U., Fragments of the earliest land plants. Nature 425 (2003), 282–285.
Wellman, C.H., Steemans, P., Miller, M.A., Spore assemblages from Upper Ordovician and lowermost Silurian sediments recovered from the Qusaiba-1 shallow core hole, Qasim region, central Saudi Arabia. Review of Palaeobotany and Palynology 212 (2015), 111–126.