Large Marine Rugose Horn Coral Fossil 59.1 GRAM piece 64x28x20 MM

Description

A nice fossil specimen of yellowish Coral from Africa.
Specimen is very clear showing good details.
Size:  64x28x20 mm
Weight:  59.1 gram
***
Rugose Horn Coral
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Hexacorallia
Order:
Rugosa
Suborders
Columnariina†  Cystiphyllina†  Streptelasmatina†
Rugose or solitary corals were abundant in the Paleozoic Era but are now extinct. They're also called horn corals. (more below)
Selltotheworld
From all around the world
Large Marine Rugose Horn Coral Fossil 59.1 GRAM piece 64x28x20 MM
A nice
fossil
specimen of yellowish
Coral
from Africa.
Specimen is very clear showing good details.
Size:  64x28x20 mm
Weight:  59.1 gram
***
Rugose Horn Coral
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Hexacorallia
Order:
Rugosa
Suborders
Columnariina†
Cystiphyllina†
Streptelasmatina†
Rugose or solitary corals were abundant in the Paleozoic Era but are now extinct. They're also called horn corals. (more below)
Corals are a very old group of organisms, originating in the Cambrian Period more than 500 million years ago. The rugose corals are common in rocks from Ordovician through Permian age.
The Rugosa, also called the Tetracoralla, are an extinct order of coral that were abundant in Middle Ordovician to Late Permian seas.
Solitary rugosans (e.g.,
Caninia
,
Lophophyllidium
,
Neozaphrentis
,
Streptelasma
) are often referred to as horn corals because of a unique horn-shaped chamber with a wrinkled, or rugose, wall. Some solitary rugosans reached nearly a meter in length. However, some species of rugose corals could form large colonies (e.g.,
Lithostrotion
). When radiating septa were present, they were usually in multiples of four, hence
Tetracoralla
in contrast to modern
Hexacoralla
, colonial polyps generally with sixfold symmetry.
Rugose corals have a skeleton made of calcite that is often fossilized. Like modern corals (Scleractinia), rugose corals were invariably benthic, living on the sea floor or in a reef-framework. Some symbiotic rugose corals were endobionts of Stromatoporoidea, especially in the Silurian. Although there is no direct proof, it is inferred that these Palaeozoic corals possessed stinging cells to capture prey. They also had tentacles to help them catch prey. Technically they were carnivores, but prey-size was so small they are often referred to as microcarnivores.
Rugose corals always show tabulae, horizontal plates that divide the corallite skeleton. The corallites are usually large relative to different types of coral. Rugose corals will sometimes have dissepiments, which are curved plates connected to septa and tabulae. The symmetry can be distinguished by the orientation of septa in a transverse section of the coral. Rugose corals always display bilateral symmetry whereas tabulate and scleractinian corals show radial symmetry. Initially there are only 6 major septa; later minor septa are added in the 4 resulting spaces. The complex arrangement of septa is diagnostic of rugose corals. Rugose corals will also always have a columella, an axial rod which supports the septa running up the center of the corallite. It is present in rugose corals because they were mainly solitary and so required the extra support. Tabulate corals have no columella because they were always colonial and relied on the support of neighboring corallites.
Item Specifics
Shape :
Rough
Treatment :
Not Enhanced
Brand :
Unbranded
Natural/Lab-Created :
Natural
Country/Region of Manufacture :
Unknown
Modified Item :
No
Payment
By Paypal
Shipping
Free shipping cost.
We send the goods to USA, Canada, UK, Australia, New Zealand, EU countries and some other European and Asian countries by E-express, a kind of fast postal service by Hong Kong Post. It usually takes about 6 to 10 working days for delivery.
We send the goods to other countries by registered airmail and will take about 8 to 14 working days for delivery.
Returns
Returns: We accept returns with any reason in 30 days.
Contact Us
We will answer buyer messages within 24 hours during working days.
Selltotheworld
From all around the world
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Large Marine Rugose Horn Coral Fossil 59.1 GRAM piece 64x28x20 MM
A nice
fossil
specimen of yellowish
Coral
from Africa.
Specimen is very clear showing good details.
Size:  64x28x20 mm
Weight:  59.1 gram
***
Rugose Horn Coral
Phylum:
Cnidaria
Class:
Anthozoa
Subclass:
Hexacorallia
Order:
Rugosa
Suborders
Columnariina†
Cystiphyllina†
Streptelasmatina†
Rugose or solitary corals were abundant in the Paleozoic Era but are now extinct. They're also called horn corals. (more below)
Corals are a very old group of organisms, originating in the Cambrian Period more than 500 million years ago. The rugose corals are common in rocks from Ordovician through Permian age.
The Rugosa, also called the Tetracoralla, are an extinct order of coral that were abundant in Middle Ordovician to Late Permian seas.
Solitary rugosans (e.g.,
Caninia
,
Lophophyllidium
,
Neozaphrentis
,
Streptelasma
) are often referred to as horn corals because of a unique horn-shaped chamber with a wrinkled, or rugose, wall. Some solitary rugosans reached nearly a meter in length. However, some species of rugose corals could form large colonies (e.g.,
Lithostrotion
). When radiating septa were present, they were usually in multiples of four, hence
Tetracoralla
in contrast to modern
Hexacoralla
, colonial polyps generally with sixfold symmetry.
Rugose corals have a skeleton made of calcite that is often fossilized. Like modern corals (Scleractinia), rugose corals were invariably benthic, living on the sea floor or in a reef-framework. Some symbiotic rugose corals were endobionts of Stromatoporoidea, especially in the Silurian. Although there is no direct proof, it is inferred that these Palaeozoic corals possessed stinging cells to capture prey. They also had tentacles to help them catch prey. Technically they were carnivores, but prey-size was so small they are often referred to as microcarnivores.
Rugose corals always show tabulae, horizontal plates that divide the corallite skeleton. The corallites are usually large relative to different types of coral. Rugose corals will sometimes have dissepiments, which are curved plates connected to septa and tabulae. The symmetry can be distinguished by the orientation of septa in a transverse section of the coral. Rugose corals always display bilateral symmetry whereas tabulate and scleractinian corals show radial symmetry. Initially there are only 6 major septa; later minor septa are added in the 4 resulting spaces. The complex arrangement of septa is diagnostic of rugose corals. Rugose corals will also always have a columella, an axial rod which supports the septa running up the center of the corallite. It is present in rugose corals because they were mainly solitary and so required the extra support. Tabulate corals have no columella because they were always colonial and relied on the support of neighboring corallites.
Item Specifics
Shape :
Rough
Treatment :
Not Enhanced
Brand :
Unbranded
Natural/Lab-Created :
Natural
Country/Region of Manufacture :
Unknown
Modified Item :
No
Payment
By Paypal
Shipping
Free shipping cost.
We send the goods to USA, Canada, UK, Australia, New Zealand, EU countries and some other European and Asian countries by E-express, a kind of fast postal service by Hong Kong Post. It usually takes about 6 to 10 working days for delivery.
We send the goods to other countries by registered airmail and will take about 8 to 14 working days for delivery.
Returns
Returns: We accept returns with any reason in 30 days.
Contact Us
We will answer buyer messages within 24 hours during working days.
All right reserved.
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