Theelia
Encyclopedia
Theelia is an extinct genus
of sea cucumber
which existed from 312 to 40.4 million years ago (Middle Pennsylvanian to the Lutetian
age).
Fossil
sclerite
s of Theelia are found worldwide.
are assigned to the genus Theelia, they include the following:
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of sea cucumber
Sea cucumber
Sea cucumbers are echinoderms from the class Holothuroidea.They are marine animals with a leathery skin and an elongated body containing a single, branched gonad. Sea cucumbers are found on the sea floor worldwide. There are a number of holothurian species and genera, many of which are targeted...
which existed from 312 to 40.4 million years ago (Middle Pennsylvanian to the Lutetian
Lutetian
The Lutetian is, in the geologic timescale, a stage or age in the Eocene. It spans the time between and . The Lutetian is preceded by the Ypresian and is followed by the Bartonian. Together with the Bartonian it is sometimes referred to as the Middle Eocene subepoch...
age).
Fossil
Fossil
Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...
sclerite
Sclerite
A sclerite is a hardened body part. The term is used in various branches of biology for various structures including hardened portions of sponges, but it is most commonly used for the hardened portions of arthropod exoskeletons....
s of Theelia are found worldwide.
Species
Numerous speciesSpecies
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
are assigned to the genus Theelia, they include the following:
- Theelia alta
- Theelia alveata
- Theelia anguinea
- Theelia conglobata
- Theelia convexa (syn. Chiridota heptalampra)
- Theelia crassidentata
- Theelia dentata
- Theelia doreckae
- Theelia dzhulfaensis
- Theelia fastigata
- Theelia fissa
- Theelia florida
- Theelia guembeli
- Theelia hexacneme
- Theelia immisorbicula (syn. Theelia subcirculata)
- Theelia koeveskalensis
- Theelia kutscheri
- Theelia lata
- Theelia latimarginata
- Theelia liptovskaensis
- Theelia mesopermiana
- Theelia monicae
- Theelia mortenseni
- Theelia multiplex
- Theelia norica
- Theelia petasiformis
- Theelia planata
- Theelia planorbicula
- Theelia praeacuta
- Theelia praenorica
- Theelia praeseniradiata
- Theelia pseudoplanata
- Theelia serta
- Theelia simoni
- Theelia sinaiensis
- Theelia staurolithensis
- Theelia stellifera
- Theelia synapta
- Theelia teneromarginata
- Theelia trammeri
- Theelia undata
- Theelia undulata
- Theelia variabilis
- Theelia wartensis
- Theelia zawidzkae