Distaeger prodigiosus Schweitzer et al., 2014

Taxonomy

Prawn

Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda Latreille, 1802
Family: Aegeridae Burkenroad, 1963
Genus: Distaeger
Species: Distaeger prodigiosus
Author Citation Schweitzer et al., 2014

Geological Time Scale

Eon: Phanerozoic
Era: Mesozoic
Period: Triassic
Sub Period: None
Epoch: Middle
International Age: Anisian (Pelsonian)

Stratigraphy

Guanling Formation

Biostratigraphy

Nicoraella kockeli Zone

Provenance

Acquired by: Purchase/Trade

Dimensions

Length: 5 cm

Location

Daaozi, Luoxiong
Luoping County
Yunnan
China

• anisian
• china
• distaeger
• luoping
• tff-oilshale-ar664
• triassic
• yunnan

Comments

Taxonomy from Schweitzer et al. 2014.

Quote (Schweitzer et al. 2014, p. 457): "Although the lobsters were interpreted as having relatively durable cuticle, the shrimp discussed herein are characterized by having very thin cuticle that is readily deformed and oriented in a variety of positions. As a result, the description and interpretation of the morphology of the shrimp is, of necessity, a composite of several specimens; however, fine detail of many parts of the skeletal anatomy is exquisite."

Diagnosis from Schweitzer et al. 2014, p. 467: "Carapace longer than high; rostrum very long, 40 percent length of carapace, with one basal suprarostral spine and one subrostral spine at midlength; uropodal exopod with diaeresis; ventral lateral margins of telson with setal pits, appearing to extend entire length of telson; third maxilliped about as long as first and second pereiopods, with spine bases or setal pits along propodal and dactyl ventral margin; pereiopods 1– 3 chelate, third pereiopod longest, fourth and fifth longer than first and second, pereiopods without spines; pleopods apparently with multiarticulate flagellae."

Identified by oilshale using Schweitzer et al. 2014. Characteristic is the extremely long rostrum, constituting 40 percent of the carapace length.

References:
SCHWEITZER, C., FELDMANN, R.,HU, S.,HUANG, J., ZHOU, C., ZHANG, Q.,WEN, W., Xie, T.(2014): PENAEOID DECAPODA (DENDROBRANCHIATA) FROM THE LUOPING BIOTA (MIDDLE TRIASSIC) OF CHINA: SYSTEMATICS AND TAPHONOMIC FRAMEWORK. Journal of Paleontology, 88(3), 2014, p. 457–474,