Lecture 8 Flashcards
(24 cards)
Who made the review of Pelycosauria?
Alfred S. Romer
What is palaeontology?
The study of prehistoric life, ex: plants, insects, bacteria
Most popular palaeontology organism?
T-Rex
Extant meaning
Still in existence
Extinct
No longer in existence
Basal
Primitive or ancestral
Derived
more recent or advanced
Amniote
Vertebrates with a fetal membrane called the amnion that protects the developing embryo
What is aSynapsid
An organsim that is an Amniote that has a single hole behind their eye socket fenestra (not related to synapomorphy)
ex: humans
What is a fenestra?
An opening behind eye (when looking at the skull from the side profile)
How does animal skull morphology difer?
The number of openings behind their eyes (allows muscle to attach)
3 major categories of geologic time
Cenozoic, Mesozoic, Paleozoic
(CMP)
What are trilobites?
Extinct, marine arthropods
What is the cambrian Explosion
When the trilobites first made appearance
When was the age of the reptiles
Saurischian sauropods and theropods dominan
When did all the non avian dinosaurs go extinct
In paleogene (Cenozoic) era
What are Phenetics
When things look alike, so we know they’re related, ex:
How many rules for phylogenetics?
5 Rules
What is the rule of parsimony
The simplest explanation of an event or observation is the preferred explanation.
What is a character?
A feature that is an observable part of, or an attribute of, an organism (think common sense)
3 types of characters
Behavioural
Molecular
Morphological
Cladogram
A diagram used to represent a hypotheticla relationship between groups of animals (ex: phylogenetic tree)
Highest point of tree means:
