The Anthocerotophyta or Anthocerophyta are more commonly known as the hornworts. These are thought to be one of the oldest extant groups of land plants. Hornworts consist of a flattened thallus with the gametangia produced along the midline of the thallus, each thallus able to produce several sporophytes. Anthocerotales (30) Dendrocerotaceae (10) Foliocerotales (1) 1. Hornwort - Photograph of this species with sporophytes. 2. Anthocerophyta - Gallery of images from the University of Wisconsin Botany Department. 3. Anthocerotophyta - An introduction. 4. Anthocerotophyta - The classification of the hornworts along with images of the characteristics of these plants 5. Anthocerotophyta - The classification of the hornworts based on Hyvonen & Piippo (1993), with references for taxonomic papers. 6. Classification of hornworts - Four classification systems of the Anthocerotophyta. 7. Hornworts. - Proposed phylogenetic relationships. 8. Sporophyte Foot - A microscopic image of a cross-section through the foot of a sporophyte. 9. Stoma - A microscopic image. 10. Thallus - A photograph of hornwort thallus. 11. Thallus cells - A microscopic image.

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