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Sagenopteris is a palmately compound leaf consisting of three to five leaflets with variations of entire to lobed margins, ranging from the Middle Triassic to the Early Cretaceous. The foliage is often associated in the Jurassic with finds of reproductive organs named Caytonia and Caytonanthus. The ovule-bearing structure named Caytonia consists of an axis 5 cm long bearing stalked multi-ovulate cupules in subopposite pairs. Each cupule is nearly circular in outline and up to 4.5 mm in diameter. Caytonanthus is a pollen-bearing structure consisting of a slender axis bearing flattened, pinnate lateral branches; each branch bears one to three elongate synangia. Each synangium is up to 1 cm long and contains one to four pollen sacs. ## Keywords Plantae Spermatophyta †Pteridospermophyta
