Definitions for megalonychidae
mega·lony·chi·dae

Princeton's WordNetRate this definition:0.0 / 0 votes

1. Megalonychidae, family Megalonychidaenoun

   mammal family consisting of the two-toed sloths

WikipediaRate this definition:0.0 / 0 votes

1. Megalonychidae

   Megalonychidae is an extinct family of sloths including the extinct Megalonyx. Megalonychids first appeared in the early Oligocene, about 35 million years (Ma) ago, in southern Argentina (Patagonia). There is actually one possible find dating to the Eocene, about 40 Ma ago, on Seymour Island in Antarctica (which was then still connected to South America). They first reached North America by island-hopping across the Central American Seaway, about 9 million years ago, prior to formation of the Isthmus of Panama about 2.7 million years ago (which led to the main pulse of the Great American Interchange). Some megalonychid lineages increased in size as time passed. The first species of these were small and may have been partly tree-dwelling, whereas the Pliocene (about 5 to 2 million years ago) species were already approximately half the size of the huge Late Pleistocene Megalonyx jeffersonii from the last ice age.It was formerly believed, based on morphological comparisons, that Greater Antilles sloths and extant arboreal two-toed sloths were part of this family. However, molecular results based on sequences from collagen and mitochondrial DNA have shown that the former represent a basal branch of the sloth radiation, while the latter are more closely related to mylodontid sloths. The megalonychids plus nothrotheriid and megatheriid sloths, together with living three-toed sloths, make up the sloth superfamily Megatherioidea.Megalonychid ground sloths became extinct in North and South America around the end of the Pleistocene.

ChatGPTRate this definition:0.0 / 0 votes

1. megalonychidae

   Megalonychidae is a family of sloths including both extinct and extant species. The two-toed sloths, which belong to this family, are arboreal (tree-dwelling) creatures found in South and Central America. Some well-known extinct species in this family include the ground sloths, which were much larger than their modern relatives.

WikidataRate this definition:0.0 / 0 votes

1. Megalonychidae

   Megalonychidae is a group of sloths including the extinct Megalonyx and the living two toed sloths. Megalonychids first appeared in the early Oligocene, about 35 million years ago, in southern Argentina, and spread as far as the Antilles by the early Miocene. Megalonychids first reached North America by island-hopping, about 9 million years ago, prior to the formation of the Isthmus of Panama. Some lineages of megalonychids increased in size as time passed. The first species of these were small and may have been partly tree-dwelling, whereas the Pliocene species were already approximately half the size of the huge Late Pleistocene Megalonyx jeffersonii from the last ice age. Some West Indian island species were as small as a large cat; their dwarf condition typified both tropical adaptation and their restricted island environment. This small size also enabled them a degree of arboreality. Megalonychid ground sloths went extinct in North and South America around the end of the Pleistocene, and in the Antilles apparently by about 5000 BP, leaving two-toed tree sloths of genus Choloepus as the only surviving members of the family.

Matched Categories

1. • Mammal Family

How to pronounce megalonychidae?

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Numerology

1. Chaldean Numerology

   The numerical value of megalonychidae in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of megalonychidae in Pythagorean Numerology is: 5

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=megalonychidae
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Megalonychidae
3. ^ ChatGPT
   https://chat.openai.com
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=megalonychidae