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There are 5 species of cycad listed as Extinct in the Wild: Encephalartos brevifoliolatus, Escarpment cycad. Encephalartos heenanii, Heenan's Cycad. Encephalartos nubimontanus, Blue cycad. Encephalartos relictus, Parlota cycad. Encephalartos woodii, Wood's cycad. Encephalartos woodii is known only from its type specimen, which was discovered in ...
Angiopteris evecta is a self-supporting evergreen perennial fern with very large bipinnate fronds. The trunk-like rhizome is massive, measuring up to 1 m (3 ft 3 in) in diameter. The older portions of the rhizome lie on the ground while the newer growth may rise vertically up to 1.2 m (3 ft 11 in) high. The arching, glossy green fronds, which ...
Equisetidae is one of the four subclasses of Polypodiopsida (ferns), a group of vascular plants with a fossil record going back to the Devonian. They are commonly known as horsetails. [ 2 ] They typically grow in wet areas, with whorls of needle-like branches radiating at regular intervals from a single vertical stem.
List of Saint Helena, Ascension and Tristan da Cunha animals extinct in the Holocene. List of Asian animals extinct in the Holocene. List of European species extinct in the Holocene. List of extinct animals of the British Isles. List of North American animals extinct in the Holocene. List of Antillian and Bermudan animals extinct in the Holocene.
Herpestidae. Hyaenidae. † Lophocyonidae. † Percrocutidae. Feliformia is a suborder within the order Carnivora consisting of "cat-like" carnivorans, including cats (large and small), hyenas, mongooses, viverrids, and related taxa. Feliformia stands in contrast to the other suborder of Carnivora, Caniformia (also Canoidea, "dog-like ...
The ferns (Polypodiopsida or Polypodiophyta) are a group of vascular plants (plants with xylem and phloem) that reproduce via spores and have neither seeds nor flowers.They differ from mosses by being vascular, i.e., having specialized tissues that conduct water and nutrients, and in having life cycles in which the branched sporophyte is the dominant phase.
The tree ferns are arborescent (tree-like) ferns that grow with a trunk elevating the fronds above ground level, making them trees. Many extant tree ferns are members of the order Cyatheales, to which belong the families Cyatheaceae (scaly tree ferns), Dicksoniaceae, Metaxyaceae, and Cibotiaceae. It is estimated that Cyatheales originated in ...
66,406 extant species have been evaluated; 61,035 of those are fully assessed [a] 34,588 are not threatened at present [b] 26,276 are threatened [c] 174 are extinct or extinct in the wild: 129 extinct (EX) species [d] 45 extinct in the wild (EW) 569 possibly extinct [CR(PE)] 48 possibly extinct in the wild [CR(PEW)]