Balanocrinidae is one of four

extant Extant or Least-concern species, least concern is the opposite of the word extinct. It may refer to: * Extant hereditary titles * Extant literature, surviving literature, such as ''Beowulf'', the oldest extant manuscript written in English * Exta ...

families Family (from ) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictability, structure, and safety as ...

of crinoids in the

order Order, ORDER or Orders may refer to: * A socio-political or established or existing order, e.g. World order, Ancien Regime, Pax Britannica * Categorization, the process in which ideas and objects are recognized, differentiated, and understood ...

Isocrinida, though most of its members are only known from the

fossil record A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...

Subfamilies and genera

Family Balanocrinidae Roux, 1981 * Subfamily Balanocrininae Roux, 1981 ** Genus '' Balanocrinus''

Agassiz Jean Louis Rodolphe Agassiz ( ; ) FRS (For) FRSE (May 28, 1807 – December 14, 1873) was a Swiss-born American biologist and geologist who is recognized as a scholar of Earth's natural history. Spending his early life in Switzerland, he recei ...

in Desor, 1845 ** Genus '' Cainocrinus'' Forbes, 1852 ** Genus '' Laevigatocrinus'' Klikushin, 1979 ** Genus '' Neocrinus'' Thomson, 1864 ** Genus '' Papacrinus'' Roux & Philippe, 2021 ** Genus '' Singularocrinus'' Klikushin, 1982 * Subfamily Diplocrininae Roux, 1981 ** Genus '' Doreckicrinus'' Rasmussen, 1961 ** Genus '' Endoxocrinus'' AH Clark, 1908 *** Subgenus Endoxocrinus (Diplocrinus) Döderlein, 1912 ** Genus '' Nielsenicrinus'' Rasmussen, 1961 ** Genus '' Teliocrinus'' Döderlein, 1912 * Subfamily Isselicrininae Klikushin, 1977 ** Genus '' Isselicrinus'' Rovereto, 1914 ** Genus '' Panglaocrinus'' Améziane, Eléaume & Roux, 2023 ** Genus '' Praeisselicrinus'' Klikushin, 1977 * Subfamily Proisocrininae Rasmussen, 1978 ** Genus '' Austinocrinus'' De Loriol, 1889 ** Genus '' Proisocrinus'' AH Clark, 1910 * Subfamily ''

incertae sedis or is a term used for a taxonomy (biology), taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertainty ...

'' ** Genus '' Cenocrinus'' Thomson, 1864 Image:Cenocrinus asterius (Linnaeus, 1767).jpg, '' Cenocrinus asterius'' Image:Endoxocrinus parrae.jpg, '' Endoxocrinus parrae'' Image:Endoxocrinus.jpg, '' Endoxocrinus sp.'' Image:Endoxocrinus (Diplocrinus) wyvillethomsoni.jpg, '' Endoxocrinus wyvillethomsoni'' File:3D MRI of Isselicrinus buchii from Rügen (MB.E 5730).ogv, '' Isselicrinus buchii'' fossil; 3D

MRI Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to generate pictures of the anatomy and the physiological processes inside the body. MRI scanners use strong magnetic fields, magnetic field gradients, and rad ...

File:Isselicrinus sp. 2 face.png, '' Isselicrinus sp.''; fossil stalk fragment File:Proisocrinus ruberrimus.jpg, '' Proisocrinus ruberrimus'' File:Neocrinus decorus.jpg, Aggregation of ''

Neocrinus decorus ''Neocrinus decorus'' is a species of stalked crinoid, or sea lily, in the family Balanocrinidae, being a member of the sole living genus of its subfamily. Distribution The species lives on hard substrates (such as on lithoherm ridges) at d ...

'',

Gulf of Mexico The Gulf of Mexico () is an oceanic basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States; on the southw ...

References

Isocrinida Echinoderm families {{crinoidea-stub