Definitions for Prototheria
pro·tothe·ri·a

Princeton's WordNetRate this definition:1.0 / 1 vote

1. Prototheria, subclass Prototherianoun

   echidnas; platypus

ChatGPTRate this definition:0.0 / 0 votes

1. prototheria

   Prototheria is a subclass of mammals that includes monotremes, the most primitive group of living mammals. This group lays eggs instead of bearing live young and includes species such as the platypus and the echidnas, or spiny anteaters. The Prototheria evolved in isolation in Australia and New Guinea.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Prototheria

   same as Monotremata

2. Etymology: [NL., from Gr. prw^tos first + qhri`on, dim. of qh`r beast.]

WikidataRate this definition:3.0 / 1 vote

1. Prototheria

   Prototheria is a taxonomic group, or taxon, to which the order Monotremata belongs. It is conventionally ranked as a subclass within the mammals. Most of the animals in this group are extinct. The egg-laying monotremes are known from fossils of the Cretaceous and Cenozoic periods; they are represented today by the platypus and several species of echidna. The names Prototheria, Metatheria and Eutheria refer to the three mammalian groupings which have living representatives. Each of the three may be defined as a total clade containing a living crown-group plus any fossil species which are more closely related to that crown-group than to any other living animals. The threefold division of living mammals into monotremes, marsupials and placentals was already well established when Thomas Huxley proposed the names Metatheria and Eutheria to incorporate the two latter groups in 1880. Initially treated as subclasses, Metatheria and Eutheria are by convention now grouped as infraclasses of the subclass Theria, and in more recent proposals have been demoted further, as cladistic reappraisals of the relationships between living and fossil mammals have suggested that the Theria itself should be reduced in rank.

Chambers 20th Century DictionaryRate this definition:5.0 / 1 vote

1. Prototheria

   prō-tō-thē′ri-a, n.pl. the hypothetical primitive mammals, ancestors of the monotremes. [Gr. prōtos, first, thēr, wild beast.]

Matched Categories

1. • Class

How to pronounce Prototheria?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say Prototheria in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Prototheria in Chaldean Numerology is: 1

2. Pythagorean Numerology

   The numerical value of Prototheria in Pythagorean Numerology is: 1

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=Prototheria
2. ^ ChatGPT
   https://chat.openai.com
3. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/Prototheria
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=Prototheria
5. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=Prototheria