Hyolithellida

Belongs within: Cnidaria. The Hyolithellida are a group of small, tubular fossils known from the Cambrian and Ordovician periods. Their affinities are uncertain; though often classified with the hyoliths (and here placed with them for convenience), their shells are phosphatic rather than calcitic, making such a relationship unlikely. Hyolithellidans may be divided between the Hyolithellidae,… Continue reading Hyolithellida

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Categorised as Cnidaria

Hexacorallia

Belongs within: Anthozoa.Contains: Spirularia, Actiniaria, Corallimorpharia, Scleractinia, Antipatharia, Zoanthidea. The Hexacorallia are a major group of cnidarians including the stony corals, sea anemones and related taxa. Most species have hexamerous symmetry, though some are octomerous or decamerous. The group is more reliably characterised by the presence of spirocysts, cnidae with a single-walled capsule and a… Continue reading Hexacorallia

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Categorised as Anthozoa

Antipatharia

Belongs within: Hexacorallia.Contains: Myriopathes. The Antipatharia, black corals, are a group of colonial cnidarians with a proteinaceous skeleton found primarily in deeper waters. Antipatharia: the black corals Published 15 September 2014 Antipathes, copyright Jez Tryner. One piece of trivia I’ve learnt while looking stuff up for this post: the genus name Antipathes, from which the… Continue reading Antipatharia

Syringopora

Belongs within: Syringoporoidea. Syringopora is a genus of tabulate corals known from the Lower Carboniferous. Members of this genus have tubular corallites connected by horizontal tubes. Syringopora Goldfuss 1826 [Syringoporinae]W77 |–S. auloporoidesF71 |–S. bellensis Etheridge 1898F71 |–S. dingmanaZP86 |–S. harveyiW77 |–S. mapingensisG31 |–S. multattenuataW77 |–S. novaecambrensis Etheridge 1899F71 |–S. porteri Etheridge 1899F71 |–S. ramulosaZP86 |… Continue reading Syringopora

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Categorised as Anthozoa

Stylophyllidae

Belongs within: Scleractinia. The Stylophyllidae are a group of corals known from the Triassic and Jurassic, characterised by septa initially composed of spines or lobes that become covered by sclerenchyma (Stolarski & Russo 2002). Characters (from Stolarski & Russo 2002): Whole skeleton built of stereomal tissue, organized in bundles of fibres forming wall, radial elements… Continue reading Stylophyllidae

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Categorised as Anthozoa

Lithostrotionidae

Belongs within: Rugosa. The Lithostrotionidae is a family of colonial rugose corals known from the Upper Carboniferous and Permian. Early members of the family formed branching colonies with discrete corallites; in many later representatives, the colonies became massive with the corallites more closely integrated (Nudds 1979). <==Lithostrotionidae |–StylastraeaRR79 |–Yatsengia hangchowensisNS93, DX84 |–StelechophyllumNS93 | |–S. alferovi… Continue reading Lithostrotionidae

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Categorised as Anthozoa

Rugosa

Belongs within: Anthozoa.Contains: Pachythecaliina, Streptelasmatida, Cystiphyllida, Lithostrotionidae, Disphyllidae, Phillipsastreidae, Verbeekiellidae, Waagenophyllidae, Plerophyllina. The Rugosa are a group of corals known from the Palaeozoic. They are characterised by the presence of single mesenteries (represented in the fossils by septa) that were added in four sectors (Gudo 2002). Gudo (2002) suggested that rugose corals could be subdivided… Continue reading Rugosa

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Categorised as Anthozoa

Codonophora

Belongs within: Medusozoa. The Codonophora is a clade within the siphonophores characterised by the presence of nectosomes, bell-shaped zooids specialised for swimming, and gelatinous shield-like bracts (these latter lost in some subgroups) (Dunn et al. 2005). <==Codonophora [Brachystelia, Physonectae] | i. s.: Lychnagalma utricularia [incl. L. vesicularia]DPH05 | Discolabe quadrigataH04 | Strobalia cupolaH04 |–ApolemaDPH05 [ApolemidaeDB07]… Continue reading Codonophora

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Categorised as Medusozoa