9G GUIDE TO THE FOSSIL INVERTEBRATE ANIMALS. 
Qallery 
VIII. 
Table-case 
22 . 
Wall-case 
13b. 
Table-case 
22 . 
Table-case 
22 . 
Wall-case 
13b. 
This auiiual has the segments of the thorax all distinct, 
covered by no carapace, and hearing limbs with swimming 
branches and plate-like gills ; its eyes are stalked as those 
of a lobster. Among British fossils the Syncarida are 
represented only by poor specimens of Palaeocaris, also 
found in the Coal Measures of Illinois. To show the char- 
acters more plainl}^ a specimen of Uronectes [Gampsoibi/x] 
from the Lower Permian of Saarbriicken, Germany, lias been 
placed in the Table-case. 
Several Crustaceans now referred to independent Orders 
of Malacostraca were till recently united under the name 
Schizopoda (cleft-feet). Since certain 
fossils are too obscure to be referred 
with certainty to any other position, 
the division Schizopoda is provision- 
ally retained for them in the ex- 
bibited series. Most are from the Coal 
Measures. Falacocrangon and Anthra- 
palacmon outwardly resemble the Deca- 
poda, but appear to have some thoracic 
segments still unfused with the cara- 
pace. Fygoceplialus, witli its brood- 
pouch, may be an ancestor of Mysis, 
the modern “ opossum shrimp.” 
Next come fossils referred without 
doubt to the clearly defined Order Iso- 
poda. Of this Order the most familiar 
representative is the wood-louse, but 
most isopods are marine and some in- 
habit fresh water. The flattened body 
has a small head -shield (not a carapace) 
Fig. 47. — Anthrapalx- to which are flexibly joined seven tho- 
7non Woodwardi, Lower pacic segments, bearing each a pair of 
''“Ikiiig legs; plates attaolied to tl.e 
a", antenna ; o, stalked bases of these limbs form a brood-pouch 
eye ; cf, furrow separa- f^j. e,r,Tg and young ; the abdomen, which 
JXfct’efal'! bearrgill-plates is veduoed in site, its 
men; t, teison. En- segments partially fused, with a rela- 
larged 2 diam. (From tively large tail-shield. Oxyuropoda 
Kiltorcan and fragments of a large 
Prcarclurus from near Hereford are 
of Devonian age, but their isopod nature may be (]^ues- 
tioned. Cyclosphaeronia, however, from the Jurassic 
rocks of Northampton and Solenhofen, is an undoubted 
