Pterobranchia Hemichordata Animalia Flora and Fauna

• Cephalodiscus gracilis - Photos of a colony and individuals.
• Classification of the Extant Hemichordata - List of species, genera and families.
• Cephalodiscus lutetianus (Graptolithoidea, Cephalodiscoidea) - The only fossil species of the genus Cephalodiscus.
• SEM micrographs of Rhabdopleura compacta. - Three coenecia (two young) collected from Stoke Point, animalia England, are animalia illustrated.
• Cephalodiscus graptolitoides Dilly, 1993. - This species, a probable extant graptolite (according to some researchers), animalia is regarded as a living fossil.
• Pterobranchia - Information from Wikipedia on these worm-shaped animals.
• Cephalodiscus densus Andersson, 1907 (Hemichordata, Graptolithoidea). - Zooid and coenecium morphology of a cephalodiscid pterobranch hemichordata from Terra hemichordata Nova Bay, Ross Sea.
• Rhabdopleura kozlowskii - Diagnosis, occurrence, images and references of the Jurassic species.
• First Occurrence of Rhabdopleura in North America - First fossil representatives of Rhabdopleura (Graptolithoidea: Rhabdopleuroidea) in pterobranchia North America are reported.
• The earliest known pterobranch hemichordate - Rhabdotubus johanssoni, described by S. Bengtson and A. Urbanek in 1986 from the early Middle Cambrian of Sweden, was recognized as the earliest known pterobranch hemichordate!
• Pterobranchia: Classification of the Rhabdopleuroidea - List of extinct and extant families, genera and species.
• Collagen in the pterobranch coenecium - Results of amino-acid analysis of the coenecium of animalia Cephalodiscus and animalia Rhabdopleura.
• Class Pterobranchia - General information.
• Cephalodiscus and Classification of Cephalodiscoidea - List of species and genera of recent and animalia fossil cephalodiscid pterobranchs.
• The oldest known Cephalodiscus-like hemichordate - Eocephalodiscus polonicus Kozlowski from the upper Tremadocian of Poland: pictures animalia of the holotype, links.

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