MONDAY  21 JANUARY

To allow for the Martin Luther King Day observance, all classes at SU will be truncated on this day.  Please note the times that have been changed for this day only.

THE SEPARATE HOUR (W1 8:40-9:20) and (W2 10:10-10:50)

DIALOGUE 3: The readings for this dialogue will come from the web site.  Please examine the Phylum Craniata page from which you are responsible for all information (You are responsible for the Classification of the Craniata from the Subphylum Myxinomorphi through the Class Chondrichthyes (You may access them through the Phylum Craniata page): 

SUBPHYLUM MYXINOMORPHI

CLASS MYLLOKUNMINGIIDA+

CLASS MYXINI (HAGFISHES)

SUBPHYLUM VERTEBRATA

SUPERCLASS PETROMYZONTOMORPHI 

CLASS PETROMYZONTIDA (LAMPREYS)

SUPERCLASS CONODONOMORPHI+

CLASS CONODONTA+

SUPERCLASS PTERASPIDOMORPHI+

CLASS PTERAPSIDA+ 

SUPERCLASS ANASPIDOMORPHI+

CLASS ANASPIDA

SUPERCLASS THELODONTOMORPHI+

CLASS THELODONTI

SUPERCLASS OSTEOSTRACOMORPHI

CLASS CEPHALASPIDOMORPHI

SUPERCLASS GNATHOSTOMATA

CLASS PLACODERMI+

CLASS CHONDRICHTHYES (SHARKS, SKATES, RAYS, CHIMERAS)  Know the distinctions between the Elasmobranchii and the Euchondrocephali.

In addition, you are responsible for descriptive information on the classes (subclasses of the Chondrichthyes) of each of the taxa (follow the links).  We will hold you responsible for information at the class-level only for the dialogue quiz.  However, please feel free to ask questions about all of the taxa on any particular linked page.

OTHER READINGS:

• Holt. Evidence and Einstein's Brain

THE COMMON HOUR (both sections: 9:20-10:10)

GAME 1. Please come prepared with information from the first week. The categories will be WHO, WHAT, and WHY.  This could include any information from the discussions, activities, and readings.  Please come prepared.

WEDNESDAY 23 JANUARY

THE SEPARATE HOUR

ACTIVITY 3: We have no living representatives of these classes; however, you will find the following preserved specimens, slides and fossils of particular agnathans, sharks, and placoderms.  Use the Chondrichthyes and Jawless Fishes sheets to guide you in your investigations.

1. Hagfish (Myxine), preserved
2. Lamprey (Petromyzon), preserved, mounted dissections and bioplastic mounts of lampreys with emphasis on the head, and slides of ammocetes larvae.
3. Conodonts will be mounted on a plug in the Scanning Electron Microscope.
4. Find models of extinct agnathans, placoderms, and sharks: Rhyncholepis, Pteraspis, Hemicyclaspis, Pterichthyodes, Coccosteus, Bothriolepis, Cladodus, Pleuracanthus.
5. Examine preserved sharks, particularly dogfish (Squalus), a ray (Raja), a skate, and a chimaera (Hydrolagus).  Look at preserved animals, bioplastic mounts, skeletons, skulls, neurocrania, jaws, and teeth.

THE COMMON HOUR

DIALOGUE 4: Please prepare for the dialogue by reading the information on the acanthodians, osteichthyes, basal tetrapod families, the batrachomorphs, and lepospondyls:

CLASS ACANTHODII+

CLASS OSTEICHTHYES (THE BONY FISHES)  Know the distinction between the ray-finned fishes and the lobed-finned fishes.

CLASS STEGOCEPHALI+ -(THE TRANSITIONAL EARLY TETRAPODS)

CLASS BATRACHOMORPHA (CONTAINS EXTANT AMPHIBIA)  Know the distinctions between the main groups of extant amphibians.

CLASS PROAMNIOTA+ (LEPOSPONDYLI-REPTILIOMORPHA CLADE)

IN ADDITION, PLEASE READ:

• Holt. Nature's Storehouse.
• Holt. Lost Worlds.
• Holt. Reading the Earth.
• Darwin. Origin. Chapter 2. 

FRIDAY 25 JANUARY

THE SEPARATE HOUR

ACTIVITY 4: Look at the following animals (living and preserved) as well as models, slides, and skeletal preparations.  Use the Osteichthyes and Batrachomorpha sheets to guide you in your investigations.

1. Models of Climatus, Dipterus, and Osteolepis.
2. Different types of scales (placoid, cycloid, ctenoid, ganoid)
3. Preserved gar (Lepisosteus), bowfin (Amia), Catfish (Ictalurus), menhaden (Alosa), perch (Perca), and searobin (Triglidae).
4. Skeletons and skulls of perch, gar, and bowfin.
5. Mounts of perch and dipnoan dissection.
6. slides of fish blood
7. slides of fish gill
8. Living fishes: goldfish, catfish, cichlids, bluegills, polypterus, and guppies (and any others).
9. Preserved frogs (Rana).
10. Skeletons of frogs, and Necturus.
11. Living Necturus and frogs.

THE COMMON HOUR

DIALOGUE 5: Please prepare for the dialogue by reading the information on the mammal-like reptiles, mammals (know the major groups linked on the mammal front page), anapsids, eodiapsids, lepidosauromorphs (know the major groups), and the archosauromorphs (know the major groups).  You retain the navigation tools if you access the following classes through the Craniata page.

CLASS EOSYNAPSIDA+- THE MAMMAL-LIKE REPTILES

CLASS MAMMALIA (CONTAINS EXTANT MAMMALS)  Know the distinctions between the main groups of the extant mammals.

CLASS ANAPSIDA (CONTAINS TURTLES)

CLASS EODIAPSIDA+ (CONTAINS STEM DIAPSIDS AND ICHTHYOSAURS)

CLASS LEPIDOSAUROMORPHA (CONTAINS EXTANT LIZARDS, SNAKES, AND TUATARAS)  Know the distinctions between the main groups of extant lepidosaurs.

CLASS ARCHOSAUROMORPHA (CONTAINS CROCODILIANS & BIRDS).  Know the distinctions between the subclasses.  Also, know the distinctive features of the paleognathae and the neognathae.

IN ADDITION, PLEASE READ:

• Holt. A Rock, a Razor, and a Dinosaur.
• Holt. A Dinosaur with a Thumb on its Nose.

Please report any broken links to holt@susqu.edu 

JRH: Last modified on 01/23/08