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Megalocardia

Description

Cardiomegaly is a medical condition in which the heart is enlarged. It is more commonly referred to as an enlarged heart. Other common names for cardiomegaly is megacardia or megalocardia, but they all refer to the same thing. The causes of cardiomegaly vary from patient to patient, depending on each case. Many times this condition results from high blood pressure (hypertension) or coronary artery disease. An enlarged heart may not pump blood effectively, resulting in congestive heart failure. Cardiomegaly may improve over time, but many people with an enlarged heart need lifelong treatment with medications. Having an immediate family member who has or had cardiomegaly may indicate that a person is more susceptible to getting this condition. Cardiomegaly is not a disease but rather a condition that can result from a host of other diseases such as obesity or coronary artery disease. Recent studies suggest that cardiomegaly is associated with a higher risk of sudden cardiac death (SCD). Cardiomegaly can be serious even though it is not an actual disease. Depending on what part of the heart is enlarged, the patient can suffer from a heart failure. Anyone can experience a heart enlargement, but not everyone will be diagnosed immediately, based on the signs and symptoms. Cardiomegaly leads to clinical heart failure and in United States nearly 5.8 million people suffer. Heart failures increase with age, more common in males, and African Americans. According to research conducted in June 2019, mentioned that half of the people diagnosed with heart failure die within 5 years, after the diagnosis. Cardiomyopathy is also associated with cardiomegaly, and it is a disease of the heart muscle, which makes it difficult for the heart to pump blood to the rest of the body. Cardiomyopathy can lead to a heart failure. There are three main types of cardiomyopathy: hypertrophic, dilated, and restrictive. The difference is that cardiomegaly is a condition of the heart and cardiomyopathy is an actual disease.


Source Data
SourceIDLink
Global Biodiversity Information Facility ID (GBIF)4591387https://www.gbif.org/species/4591387
PaleoBioDB ID (PBDB)17883https://paleobiodb.org/classic/checkTaxonInfo?taxon_no=17883
Rankgenus
Taxonomy (GBIF)Life : Animalia : Mollusca : Bivalvia : Cardiida : Megalocardia
Taxonomy (PBDB)Life : Animalia : Mollusca : Bivalvia : Veneroidei : Megalocardia
Taxonomic Status (GBIF)doubtful
Classification
(PBDB,GBIF)
RankNameAuthor
-Eukaryota
-OpisthokontaCavalier-Smith 1987
kingdomAnimalia
-Bilateria
-EubilateriaAx 1987
-ProtostomiaGrobben 1908
-Spiralia
superphylumLophotrochozoa
phylumMolluscaLinnaeus 1758
classBivalviaLinnaeus 1758
-EubivalviaCarter 2011
subclassAutobranchia
infraclassHeteroconchia
-CardiomorphiFerussac 1822
-CardioniFerussac 1822
-CardiidiaFerussac 1822
-CardiataFerussac 1822
superorderCardiiformiiFerussac 1822
orderCardiidaFerussac 1822
suborderCardiidinaFerussac 1822
-Veneroidei
genusMegalocardia
Scientific NameMegalocardia
Opinions (PBDB)
NameRankOpinionEvidenceAuthor
Megalocardiagenusbelongs to Veneroidasecond handSepkoski, 2002
Status (PBDB)extinct
Taxon Size (PBDB)1
First Recorded Appearance109 - 105 Ma
Early/Lower Cretaceous
Last Recorded Appearance105 - 100 Ma
Cretaceous
Motilityfacultatively mobile (based on Veneroidei)
Visionblind (based on Bivalvia)
Dietsuspension feeder (based on Veneroidei)
Taphonomyaragonite (based on Bivalvia)
Primary Reference (PBDB)J. J. Sepkoski, Jr. 2002. A compendium of fossil marine animal genera. Bulletins of American Paleontology 363:1-560
Wikipediahttps://en.wikipedia.org/wiki/Megalocardia

Fossil Distribution

Synonymy List

YearName and Author
2002Megalocardia Sepkoski, Jr.

References

Sepkoski, Jr. J. J. (2002) A compendium of fossil marine animal genera, Bulletins of American Paleontology 363, 1-560
Sepkoski, J. J., Jr. (2002). A compendium of fossil marine animal genera. Bulletins of American Paleontology. 363, 1-560. - via The Interim Register of Marine and Nonmarine Genera
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
 
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