Graptolite
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Graptolite
Graptolites are a group of colonial animals, members of the subclass Graptolithina within the class Pterobranchia. These filter-feeding organisms are...
Graptolite Island
Graptolite Island is an island 0.8 km (0.50 mi) long in the north-east part of Fitchie Bay, lying off the south-east portion of Laurie Island in the South...
List of graptolite genera
This list of graptolites is an attempt to create a comprehensive listing of all genera from the fossil record that have ever been considered to be members...
Nancy Kirk (geologist)
geologist who developed original theories regarding the life and habits of graptolites. She was a protégée of Owen Thomas (O.T.) Jones, a Welsh geology professor...
Darriwilian
boundary of the Darriwilian is defined as the first appearance of the graptolite species Undulograptus austrodentatus around 469.4 million years ago. It...
Rhabdopleura
Middle Cambrian, it is also considered to be the only living genus of graptolites. Rhabdopleura is the best studied pterobranch in developmental biology...
Hemichordate
commonly called acorn worms, and the Pterobranchia, which includes the graptolites. A third class, Planctosphaeroidea, is proposed based on a single species...
Axonophora
Axonophora is an extinct suborder of graptolites. It primarily consists of the biserial graptolites, and also includes the retiolitids and monograptids...
Pterobranchia
clade as the extinct graptolites, and phylogenetic analysis suggests that the pterobranchs are living members of the graptolite clade. Pterobranchs are...
Gertrude Elles
1872 – 18 November 1960) was a British geologist, known for her work on graptolites. Gertrude Elles was born on 8 October 1872. She was the youngest of six...