Merulinidae
Colonial reef-building corals with fused skeletons and no paliform lobes.
Merulinidae are a family of stony corals that build reefs. Every genus in this family forms colonies and contributes to reef construction. Their skeletons resemble those of Faviidae, but are more heavily fused and lack paliform lobes. The valleys on their surfaces can be shallow or hard to see, often due to fan-like spreading or twisting of the ridges. Their closest relatives are the Faviidae and Trachyphylliidae families.
Quick Facts
- Taxon
- Merulinidae
Facts from the source article.
Lore & Background
Merulinidae is a family of stony corals that build reefs. All its genera are colonial. Their skeletal structures resemble those of Faviidae but are more highly fused and lack paliform lobes. The valleys of the corallum are superficial or may be indistinct because of fan-like spreading or contortions in the ridges. The families most closely related to Merulinidae are Faviidae and Trachyphylliidae.
Reader's Guide
The family Merulinidae is significant as a group of reef-building stony corals. Its skeletal characteristics—highly fused and lacking paliform lobes—distinguish it from the closely related Faviidae. The superficial or indistinct valleys, caused by fan-like spreading or contortions in the ridges, are a notable feature. The World Register of Marine Species lists numerous genera within this family, including Astrea, Australogyra, Boninastrea, Caulastraea, Coelastrea, Cyphastrea, Dipsastraea, Echinopora, Erythrastrea, Favites, Goniastrea, Hydnophora, Hydnophyllia, Isastraea, Leptoria, Merulina, Mycedium, Orbicella, Oulophyllia, Paragoniastrea, Paraleptoria, Paramontastraea, Pectinia, Physophyllia, Platygyra, Scapophyllia, and Trachyphyllia. The family's legacy lies in its contribution to reef ecosystems as colonial builders, with its skeletal fusion and valley morphology being key identifying traits.
Did You Know?
- All genera in Merulinidae are colonial and reef-building.
- Merulinidae skeletons are highly fused and lack paliform lobes.
- The valleys of Merulinidae corals are superficial or indistinct due to fan-like spreading or contortions in ridges.
- Faviidae and Trachyphylliidae are the most closely related families to Merulinidae.
Frequently Asked Questions
What is Merulinidae?
Merulinidae is a family of stony corals in which every single genus forms colonies and actively constructs reef structures. They are best known for their heavily fused skeletons and the absence of paliform lobes.
What makes Merulinidae skeletons distinctive?
Their skeletal framework is more extensively fused than that of similar families, and they completely lack paliform lobes. Surface valleys are typically shallow or nearly invisible because the ridges fan outward or twist into complex contortions.
Which coral families are most closely related to Merulinidae?
The two nearest relatives are Faviidae and Trachyphylliidae. While Merulinidae share general skeletal similarities with Faviidae, they set themselves apart through greater fusion and the total absence of paliform lobes.
How do Merulinidae differ from the similar-looking Faviidae?
Although both families produce comparable skeletal structures, Merulinidae skeletons are more heavily fused and entirely lack the paliform lobes present in Faviidae. Their surface valleys are also shallower and harder to distinguish because the ridges spread in a fan-like pattern or twist irregularly.
What ecological role do Merulinidae corals play?
As colonial reef-builders, every genus within the family contributes to constructing and maintaining the physical architecture of coral reefs. They are integral structural contributors to the reef ecosystems they inhabit.
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