Dicroidium

rdf:langString Dicroidium

rdf:langString Gothan

rdf:langString Dicroidium odontopteroides fossil leaf, Late Triassic Molteno Formation near Birds River South Africa.

rdf:langString * Dicroidium crassinervis( Australia, Antarctica, South Africa ) * Dicroidium coriaceum, ( Australia, Antarctica, South Africa ) * Dicroidium dubium ( Australia, Antarctica, South Africa ) * Dicroidium odontopteroides, ( Australia, New Zealand, Antarctica, India, South Africa, Argentina, Brazil) * Dicroidium stelznerianum, (Australia, New Zealand, Antarctica, South Africa, Argentina) * Dicroidium zuberi, ( Antarctica, Australia, South Africa, Brazil)

rdf:langString Species

rdf:langString Dicroidium

rdf:langString Dicroidium is an extinct genus of fork-leaved seed ferns that were widely distributed over Gondwana during the Triassic (252 to 201 million years ago). Their fossils are known from South Africa, the Arabian Peninsula, Australia, New Zealand, South America, Madagascar, the Indian subcontinent and Antarctica. They were first discovered in Triassic sediments of Tasmania by Morris in 1845. Fossils from the Umm Irna Formation in Jordan and in Pakistan indicate that these plants already existed in Late Permian. Late surviving members of the genus are known from the Early Jurassic (Sinemurian) of East Antarctica. Within paleobotany, Dicroidium is a form genus used to refers to the leaves, associated with ovuluate organs classified as Umkomasia and pollen organs classified as Pteruchus, while Dicroidum is also used collectively to refer to the whole plant.